Service Manual
Single Package
Vertical Air Conditioning System
For Years 2009 and 2008
VPK-ServMan (04-09)
*(Electronic Control)
Models
9,000 BTU’s
12,000 BTU’s
18,000 BTU’s
24,000 BTU’s
A SERIES
FRIEDRICH AIR CONDITIONING CO.
Post Ofce Box 1540 · San Antonio, Texas 78295-1540
4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212
(210) 357-4400 · FAX (210) 357-4490
www.friedrich.com
Printed in the U.S.A.
TECHNICAL SUPPORT
CONTACT INFORMATION
1
Table of Contents
Important Safety Information .............................................2
Introduction ........................................................................4
Vert-I-Pak Model Number Identication Guide ..................5
Serial Number Identication Guide ....................................5
2009 Models Chassis Specications/Performance .........6-7
2008 Models Chassis Specications/Performance .........8-9
Electrical Requirements ....................................................10
Remote Thermostat and Low Voltage Control .............11-12
V-PAK Electronic Control Board Features ........................13
Electronic Control Conguration .......................................14
Electronic Control Error Code
Diagnostics/Test Mode ................................................14-15
Electronic Control Board/Wall Thermostat
Sequence of Operation ...............................................16-18
Component Description ....................................................19
Checking External Static Pressure ...................................20
Checking Approximate Airow ..........................................20
Airow Charts ...................................................................21
Components Testing ....................................................22-23
Refrigeration Sequence of Operation ...............................24
Service ..............................................................................25
Sealed Refrigeration System Repairs ...............................26
Refrigerant Charging .........................................................26
Method Of Charging ..........................................................27
Undercharged Refrigerant Systems ..................................28
Overcharged Refrigerant Systems ....................................28
Restricted Refrigerant Systems ........................................29
Capillary Tube Systems/Check Valve ...............................30
Reversing Valve — Description/Operation ....................31
Testing Coil ....................................................................32
Checking Reversing Valves ...........................................32
Reversing Valve
Touch Testing Heating/Cooling Cycle ...........................33
Procedure For Changing Reversing Valve ....................33
Compressor Checks ......................................................34
Locked Rotor Voltage Test ............................................34
Single Phase Connections ...........................................34
Determine Locked Rotor Voltage .................................34
Locked Rotor Amperage Test ........................................34
Single Phase Running & Locked Rotor Amperage .......35
External Overload .........................................................34
Checking the External Overload ...................................34
Checking the Internal Overload ....................................34
Compressor Single Phase Resistance Test .................35
Compressor Replacement ......................................36-37
Routine Maintenance ..............................................38-39
9-18 Electrical Troubleshooting Chart – Cooling .........40
2-Ton Electrical Troubleshooting Chart – Cooling .......41
Refrigerant System Diagnosis – Cooling .....................42
Refrigerant System Diagnosis – Heating .....................43
Electrical Troubleshooting Chart –Heat Pump .............43
Electrical and Thermostat Wiring Diagram .............44-49
Thermistors Resistance Valves ...................................50
Accessories .................................................................51
Warranty ......................................................................52
IMPORTANT SAFETY INFORMATION
The information contained in this manual is intended for use by a qualied service technician who is familiar
with the safety procedures required for installation and repair, and who is equipped with the proper tools and
test instruments required to service this product.
Installation or repairs made by unqualied persons can result in subjecting the unqualied person making
such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical
shock which can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be
encountered. If you install or perform service on equipment, it is your responsibility to read and obey these
warnings to guard against any bodily injury or property damage which may result to you or others.
PERSONAL INJURY OR DEATH HAZARDS
ELECTRICAL HAZARDS:
Unplug and/or disconnect all electrical power to the unit before performing inspections, •
maintenance, or service.
Make sure to follow proper lockout/tag out procedures.•
Always work in the company of a qualied assistant if possible. •
Capacitors, even when disconnected from the electrical power source, retain an electrical charge •
potential capable of causing electric shock or electrocution.
Handle, discharge, and test capacitors according to safe, established, standards, and approved •
procedures.
Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary •
to test or troubleshoot equipment with the power on to the unit.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read
and obey all safety messages.
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury,
and tell you what will happen if the instructions are not followed.
This is a safety Alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol with the word “WARNING”
or “CAUTION”. These words mean:
You can be killed or seriously injured if you do not follow instructions.
You can receive minor or moderate injury if you do not follow instructions.
A message to alert you of potential property damage will have the
word “NOTICE”. Potential property damage can occur if instructions
are not followed.
WARNING
CAUTION
NOTICE
2
Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, •
and sleeve on the room side of the air conditioning unit while cleaning.
Electrical component malfunction caused by water could result in electric shock or other electrically •
unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.
Never operate the A/C unit with wet hands.•
Use air conditioner on a single dedicated circuit within the specied amperage rating. •
Use on a properly grounded outlet only.•
Do not remove ground prong of plug.•
Do not cut or modify the power supply cord.•
Do not use extension cords with the unit.•
Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, •
goggles, clothing, adequately insulated tools, and testing equipment etc.
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death. •
REFRIGERATION SYSTEM HAZARDS:
Use approved standard refrigerant recovering procedures and equipment to relieve pressure before •
opening system for repair.
Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor •
to moderate injury.
Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s ame or hot •
surfaces can cause serious burns.
Make sure to protect personal and surrounding property with re proof materials.•
Have a re extinguisher at hand while using a torch.•
Provide adequate ventilation to vent off toxic fumes, and work with a qualied assistant whenever •
possible.
Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for •
leaks, ushing etc.
Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, •
safety glasses, clothing etc.
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death. •
MECHANICAL HAZARDS:
Extreme care, proper judgment and all safety procedures must be followed when testing, •
troubleshooting, handling, or working around unit with moving and/or rotating parts.
Be careful when, handling and working around exposed edges and corners of sleeve, chassis, and •
other unit components especially the sharp ns of the indoor and outdoor coils.
Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.•
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.•
3
4
PROPERTY DAMAGE HAZARDS
FIRE DAMAGE HAZARDS:
Read the Installation/Operation Manual for this air conditioning unit prior to operating.•
Use air conditioner on a single dedicated circuit within the specied amperage rating. •
Connect to a properly grounded outlet only.•
Do not remove ground prong of plug.•
Do not cut or modify the power supply cord.•
Do not use extension cords with the unit.•
Failure to follow these instructions can result in re and minor to serious property damage.•
WATER DAMAGE HAZARDS:
Improper installation maintenance, or servicing of the air conditioner unit, or not following the above •
Safety Warnings can result in water damage to personal items or property.
Insure that the unit has a sufcient pitch to the outside to allow water to drain from the unit. •
Do not drill holes in the bottom of the drain pan or the underside of the unit. •
Failure to follow these instructions can result in result in damage to the unit and/or minor to serious •
property damage.
INTRODUCTION
This service manual is designed to be used in conjunction with the installation manuals provided with each unit.
This service manual was written to assist the professional HVAC service technician to quickly and accurately
diagnose and repair any malfunctions of this product.
This manual, therefore, will deal with all subjects in a general nature. (i.e. All text will pertain to all models).
IMPORTANT:
It will be necessary for you to accurately identify the unit you are
servicing, so you can be certain of a proper diagnosis and repair.
(See Unit Identication.)
Exterior Wall
Flexible Ductwork
Rigid Ductwork
VPAWP1-8/1-14 Wall Plenum
Plenum Divider
VPDP1 drain pan beneath
unit is required on all
VEA/VHA24 units. Drain pan
must be installed prior to
chassis installation
Chassis is
shipped with
vibration
isolators
installed
3" Clearance on all three
sides minimum for
service and installation
Optional Platform
58"
29"
installed drain pan
(refer to local codes)
VPRG4 Access Panel &
Return Air Filter Grille
Power
Disconnect
PRODUCT LINE
N = VPAK
V = VPAK
SERIAL NUMBER
MONTH MANUFACTURED
A = Jan D = Apr G = Jul K = Oct
B = Feb E = May H = Aug L = Nov
C = Mar F = Jun J = Sep M = Dec
YEAR MANUFACTURED
LK = 2000
LA = 2001
LB = 2002
LC = 2003
LD = 2004
LE = 2005
LF = 2006
LG = 2007
LH = 2008
LJ = 2009
ELECTRIC HEATER SIZE
A-Series
00 = No electric heat
25 = 2.5 KW
34 = 3.4 KW
50 = 5.0 KW
75 = 7.5 KW
10 = 10 KW
NOMINAL CAPACITY
A-Series (Btu/h)
09 = 9,000
12 = 12,000
18 = 18,000
24 = 24,000
EN GI NEER ING CODE
OPTIONS
RT = Stan dard Re mote Op er a tion
SP = Sea coast Pro tect ed
VOLTAGE
K = 208/230V-1Ph-60Hz
DESIGN SERIES
A = 32" and 47" Cabinet
E=Cooling with or without electric heat
H=Heat Pump
SERIES
V=Vertical Series
MODEL NUMBER V E A 24 K 50 RT A
Model Identifi cation Guide
PRODUCTION RUN NUMBER
Serial Number Identifi cation Guide
10000 V A J L
5
VEA/VHA09 -24
VEA09K VEA12K VEA18K VEA24K VHA09K VHA12K VHA18K VHA24K
COOLING DATA
Cooling Btu/h 9500/9300 11800/11500 17500/17300 24000 9500/9300 11800/11500 17500/17300 23500
Cooling Power (W) 880 1093 1882 2526 905 1124 1882 2474
EER 10.8 10.8 9.3 9.5 10.5 10.5 9.3 9.5
Sensible Heat Ratio 0.74 0.72 0.70 0.70 0.74 0.72 0.70 0.70
HEA T PU MP DATA
Heating Btu/h N/A N/A N/A N/A 8500/8300 10600/10400 17000/16800 22500
COP @ 47°F N/A N/A N/A N/A 3.0 3.2 3.0 3.0
Heating Power (W) N/A N/A N/A N/A 830 971 1560 2200
Heating Current (A) N/A N/A N/A N/A 4.4/4.9 5.5/6.1 7.5/8.2 11.4
E L E CTRICAL DATA
Voltage (1 Phase, 60 Hz) 230/208 230/208 230/208 230/208 230/208 230/208 230/208 230/208
Volt Range 253-198 253-198 253-198 253-198 253-198 253-198 253-198 253-198
Cooling Current (A) 4.1/4.3 4.9/5.3 8.4/9.0 11.2/12.4 4.2/4.4 5.0/5.5 8.4/9.2 11.2/12.4
Amps L.R. 21 21 42 68 21 21 42 68
Amps F.L. 3.7 4.5 7.5 10.2 3.7 4.5 7.5 10.2
Indoor Motor (HP) 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4
Indoor Motor (A) 1.2 1.2 1.2 2 1.2 1.2 1.2 2
Outdoor Motor (HP) N/A N/A N/A 1/4 N/A N/A N/A 1/4
Outdoor Motor (A) N/A N/A N/A 2 N/A N/A N/A 2
A IRF L OW DATA
Indoor CFM* 300 350 450 610 300 420 450 610
Vent CFM 60 60 60 80 60 60 60 80
Max. ESP .3" .3" .3" .4" .3" .3" .3" .4"
P H YSI CAL DATA
Dimensions (W x D x H)
Net Weight (Lbs) 114 124 144 167 114 125 144 167
Shipping Weight (Lbs) 125 135 155 180 125 135 155 180
R-22 Charge 25 29 42 68.5
23.5 27 42 63.5
* Normal Value Wet Coil @ .1" ESP.
VEA/VHA09,12
VE/VHA09 VE/VHA12
HEATER WATTS 2500/2050 3400/2780 5000/4090 2500/2050 3400/2780 5000/4090
VOLTAGE 230/208 230/208
HEATING BTUh 8500/7000 11600/9500 17000/13900 8500/7000 11600/9500 17000/13900
HEATING CURRENT (AMPS) 10.6/9.3 14.5/12.5 20.9/18.2 10.6/9.3 14.5/12.5 20.9/18.2
MINIMUM CIRCUIT AMPACITY 15 19.9 27.9 15 19.9 27.9
BRANCH CIRCUIT FUSE (AMPS) 15 20 30 15 20 30
BASIC HEATER SIZE 2.5 Kw 3.4 Kw 5.0 Kw 2.5 Kw 3.4 Kw 5.0 Kw
VEA/VHA18,24
VE/VHA18 VE/VHA24
HEATER WATTS 2500/2050 3400/2780 5000/4090 2500/2050 3400/2780 5000/4090 7500/6135 10000/8180
VOLTAGE 230/208 230/208
HEATING BTUh 8500/7000 11600/9500 17000/13900 8500/7000 11600/9500 17000/13900 25598/20939 34130/27918
HEATING CURRENT (AMPS) 10.6/9.3 14.5/12.5 20.9/18.2 10.9/9.9 14.8/13.4 21.7/19.7 32.6/29.5 43.5/39.3
MINIMUM CIRCUIT AMPACITY 15 19.9 27.9 17.2/15.9 22.1/20.3 30.7/28.1 44.3/40.4 57.9/52.7
BRANCH CIRCUIT FUSE (AMPS) 15 20 30 25/25 25/25 35/30 45/45 60/60
BASIC HEATER SIZE 2.5 Kw 3.4 Kw 5.0 Kw 2.5 Kw 3.4 Kw 5.0 Kw 7.5 Kw 10.0 Kw
23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 47¼ 23⅛ x 23⅛ x 47¼23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾
6
* Operation above these listed temperatures may result in lowered
performance or unit fatigue.
* Operation above these listed temperatures may result in lowered
performance or unit fatigue.
VEA - Extended Cooling Performance
OUTDOOR DRY BULB TEMP. (DEGREES F AT 40% R.H.)
75 85 95 105 110
INDOOR WET BULB TEMP. (DEGREES F AT 80 F D.B.)
72 67 62 72 67 62 72
67
62 72 67 62 72 67 62
VEA09
BTUh 11172 10745 9947 10640 10032 9253 10222
9500
8408 9576 8503 7496 9049 7918 6987
WATTS 718 730 737 782 790 800 880
880
880 951 950 953 994 994 997
AMPS 3.4 3.4 3.5 3.7 3.7 3.7 4.1
4.10
4.1 4.4 4.4 4.4 4.6 4.6 4.6
SHR 0.51 0.69 0.93 0.52 0.71 0.95 0.52
0.74
0.95 0.53 0.78 0.96 0.55 0.81 0.95
VEA12
BTUh 13877 13346 12355 13216 12461 11493 12697
11800
10443 11894 10561 9310 11240 9835 8679
WATTS 892 906 916 972 982 994 1093
1093
1093 1182 1180 1184 1235 1235 1239
AMPS 4.1 4.1 4.1 4.4 4.4 4.4 4.9
4.90
4.9 5.3 5.3 5.3 5.5 5.5 5.5
SHR 0.49 0.67 0.9 0.5 0.7 0.92 0.51
0.72
0.92 0.52 0.76 0.93 0.53 0.79 0.93
VEA18
BTUh 20580 19793 18323 19600 18480 17045 18830
17500
15488 17640 15663 13808 16669 14586 12871
WATTS 1536 1560 1577 1673 1690 1711 1882
1882
1882 2034 2033 2038 2127 2126 2133
AMPS 7 7 7.1 7.5 7.5 7.6 8.4
8.40
8.4 9 9 9.1 9.5 9.5 9.5
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49
0.70
0.9 0.5 0.74 0.9 0.52 0.76 0.9
VEA24
BTUh 28224 27144 25128 26880 25344 23376 25824
24000
21240 24192 21480 18936 22860 20004 17652
WATTS 2061 2094 2117 2246 2268 2296 2526
2526
2526 2731 2728 2736 2854 2853 2863
AMPS 9.3 9.3 9.4 10 10 10.1 11.1
11.20
11.3 12.1 12.1 12.1 12.6 12.6 12.6
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49
0.70
0.9 0.5 0.74 0.9 0.52 0.76 0.9
RATING POINT
ARI 310/380
VHA - Extended Cooling Performance
OUTDOOR DRY BULB TEMP. (DEGREES F AT 40% R.H.)
75 85 95 105 1
10
INDOOR WET BULB TEMP. (DEGREES F AT 80 F D.B.)
72 67 62 72 67 62 72 67 62 72 67 62 72 67 62
VHA09
BTUh 11172 10745 9947 10640 10032 9253 10222 9500 8408 9576 8503 7496 9049 7918 6987
WATTS 738 750 758 805 813 823 905 905 905 978 977 980 1023 1022 1026
AMPS 3.5 3.5 3.5 3.7 3.8 3.8 4.2 4.20 4.2 4.5 4.5 4.5 4.7 4.7 4.7
SHR 0.51 0.69 0.93 0.52 0.71 0.95 0.52 0.74 0.95 0.53 0.78 0.96 0.55 0.81 0.95
VHA12
BTUh 13877 13346 12355 13216 12461 11493 12697 11800 10443 11894 10561 9310 11240 9835 8679
WATTS 917 932 942 999 1009 1022 1124 1124 1124 1215 1214 1217 1270 1270 1274
AMPS 4.1 4.2 4.2 4.5 4.5 4.5 5 5.00 5 5.4 5.4 5.4 5.6 5.6 5.6
SHR 0.49 0.67 0.9 0.5 0.7 0.92 0.51 0.72 0.92 0.52 0.76 0.93 0.53 0.79 0.93
VHA18
BTUh 20580 19793 18323 19600 18480 17045 18830 17500 15488 17640 15663 13808 16669 14586 12871
WATTS 1536 1560 1577 1673 1690 1711 1882 1882 1882 2034 2033 2038 2127 2126 2133
AMPS 7 7 7.1 7.5 7.5 7.6 8.4 8.40 8.4 9 9 9.1 9.5 9.5 9.5
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49 0.70 0.9 0.5 0.74 0.9 0.52 0.76 0.9
VHA24
BTUh 27636 26579 24605 26320 24816 22889 25286 23500 20798 23688 21033 18542 22384 19587 17284
WATTS 2019 2051 2073 2199 2222 2249 2474 2474 2474 2674 2672 2679 2796 2794 2804
AMPS 9.3 9.3 9.4 10 10 10.1 11.1 11.20 11.3 12.1 12.1 12.1 12.6 12.6 12.6
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49 0.70 0.9 0.5 0.74 0.9 0.52 0.76 0.9
RATING POINT
ARI 310/380
7
VEA/VHA09-24
VEA09K VEA12K VEA18K VEA24K VHA09K VHA12K VHA18K VHA24K
COOLING D A T A
Cooling Btu/h 9500/9300 11800/11500 18000/17800 24000 9500/9300 11800/11500 18000/17800 23500
Cooling Power (W) 880 1093 2070 2526 905 1124 2070 2474
EER 10.8 10.8 8.7 9.5 10.5 10.5 8.7 9.5
Sensible Heat Ratio 0.74 0.72 0.70 0.70 0.74 0.72 0.70 0.70
HEA T PUMP D A T A
Heating Btu/h N/A N/A N/A N/A 8500/8300 10600/10400 15700/15500 22500
COP @ 47°F N/A N/A N/A N/A 3.0 3.2 3.0 3
Heating Power (W) N/A N/A N/A N/A 830 971 1705 2200
Heating Current (A) N/A N/A N/A N/A 4.4/4.9 5.5/6.1 9.2/10.2 11.4
ELECTRICAL D A T A
Voltage (1 Phase, 60 Hz) 230/208 230/208 230/208 230/208 230/208 230/208 230/208 230/208
Volt Range 253-198 253-198 253-198 253-198 253-198 253-198 253-198 253-198
Cooling Current (A) 4.1/4.3 4.9/5.3 9.2/10.2 11.2/12.4 4.2/4.4 5.0/5.5 9.2/10.2 11.2/12.4
Amps L.R. 21 21 47 68 21 21 47 68
Amps F.L. 3.7 4.5 7.9 10.2 3.7 4.5 7.9 10.2
Indoor Motor (HP) 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4
Indoor Motor (A) 1.
2 1.2 1.421.2 1.2 1.4 2
Outdoor Motor (HP) N/A N/A N/A 1/4 N/A N/A N/A 1/4
Outdoor Motor (A) N/A N/A N/A 2 N/A N/A N/A 2
AIRFL OW D A T A
Indoor CFM* 300 350 550 750 300 375 550 750
Vent CFM 60 60 60 80 60 60 60 80
Max. ESP .3" .3" .3" .3" .3" .3" .3" .3"
PHYSICAL D A T A
Dimensions (W x D x H)
23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 47¼ 23⅛ x 23⅛ x 47¼23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾ 23⅛ x 23⅛ x 32¾
Net Weight (Lbs) 114 124 144 167 114 125 144 167
Shipping Weight (Lbs) 125 135 155 180 125 135 155 180
R-22 Charge 25 29 42 68.5 23.5 27 42 63.5
VE A / VHA09,12
21AHV/EV90AHV/EV
Heater Watts 2500/2050 3400/2780 5000/4090 2500/2050 3400/2780 5000/4090
802/032802/032egatloV
Heating Btu/h 8500/7000 11600/9500 17000/13900 8500/7000 11600/9500 17000/13900
Heating Current (Amps) 10.6/9.3 14.5/12.5 20.9/18.2 10.6/9.3 14.5/12.5 20.9/18.2
Minimum Circuit Ampacity 15 19.9 27.9 15 19.9 27.9
Branch Circuit Fuse (Amps) 15 20 30 15 20 30
Basic Heater Size 2.5 Kw 3.4 Kw 5.0 Kw 2.5 Kw 3.4 Kw 5.0 Kw
VEA/VHA18,24
42AHV/EV81AHV/EV
Heater Watts 2500/2050 3400/2780 5000/4090 2500/2050 3400/2780 5000/4090 7500/6135 10000/8180
802/032802/032egatloV
Heating Btu/h 8500/7000 11600/9500 17000/13900 8500/7000 11600/9500 17000/13900 25598/20939 34130/27918
Heating Current (Amps) 10.6/9.3 14.5/12.5 20.9/18.2 10.9/9.9 14.8/13.4 21.7/19.7 32.6/29.5 43.5/39.3
Minimum Circuit Ampacity 15 19.9 27.9 17.2/15.9 22.1/20.3 30.7/28.1 44.3/40.4 57.9/52.7
Branch Circuit Fuse (Amps) 15 20 30 25/25 25/25 35/30 45/45 60/60
Basic Heater Size 2.5 Kw 3.4 Kw 5.0 Kw 2.5 Kw 3.4 Kw 5.0 Kw 7.5 Kw 10.0 Kw
* Normal Value Wet Coil @ .1" ESP.
8
9
VEA - Extended Cooling Performance
OUTDOOR DRY BULB TEMP. (DEGREES F AT 40% R.H.)
75 85 95 105 110
INDOOR WET BULB TEMP. (DEGREES F AT 80 F D.B.)
72 67 62 72 67 62 72
67
62 72 67 62 72 67 62
VEA09
BTUh 11172 10745 9947 10640 10032 9253 10222
9500
8408 9576 8503 7496 8522 7334 6479
WATTS 718 730 737 782 790 800 880
880
880 951 950 953 1038 1038 1042
AMPS 3.4 3.4 3.5 3.7 3.7 3.7 4.1
4.10
4.1 4.4 4.4 4.4 4.8 4.8 4.8
SHR 0.51 0.69 0.93 0.52 0.71 0.95 0.52
0.74
0.95 0.53 0.78 0.96 0.56 0.83 0.95
VEA12
BTUh 13877 13346 12355 1
3216 12461 11493 12697
11800
10443 11894 10561 9310 10585 9110 8048
WATTS 892 906 916 972 982 994 1093
1093
1093 1182 1180 1184 1289 1289 1294
AMPS 4.1 4.1 4.1 4.4 4.4 4.4 4.9
4.90
4.9 5.3 5.3 5.3 5.8 5.8 5.8
SHR
0.49 0.67 0.9 0.5 0.7 0.92 0.51
0.72
0.92 0.52 0.76 0.93 0.54 0.81 0.92
VEA18
BTUh 21168 20358 18846 20160 19008 17532 19368
18000
15930 18144 16110 14202 16146 13896 12276
WATTS 1536 1560 1577 1673 1690 1711 1882
1882
1882 2034 2033 2038 2219 2219 2228
AMPS 7.7 7.7 7.8 8.3 8.3 8.4 9.3
9.30
9.3 10 10 10 10.9 10.9 11
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49
0.70
0.9 0.5 0.74 0.9 0.53 0.79 0.9
VEA24
BTUh
28224 27144 25128 26880 25344 23376 25824
24000
21240 24192 21480 18936 21528 18528 16368
WATTS 2061 2094 2117 2246 2268 2296 2526
2526
2526 2731 2728 2736 2978 2978 2991
AMPS 9.3 9.3 9.4 10 10 10.1 11.1
11.20
11.3 12.1 12.1 12.1 13.1 13.1 13.2
SHR 0.48 0.65 0.88 0.49 0.68 0.89
0.49
0.70
0.9
0.5 0.74 0.9 0.53 0.79 0.9
RATING POINT
ARI 310/380
VHA - Extended Cooling Performance
OUTDOOR DRY BULB TEMP. (DEGREES F AT 40% R.H.)
75 85 95 105 110
INDOOR WET BULB TEMP. (DEGREES F AT 80 F D.B.)
72 67 62 72 67 62 72
67
62 72 67 62 72 67 62
VHA09
BTUh 11172 10745 9947 10640 10032 9253 10222
9500
8408 9576 8503 7496 8522 7334 6479
WATTS 738 750 758 805 813 823 905
905
905 978 977 980 1067 1067 1072
AMPS 3.5 3.5 3.5 3.7 3.8 3.8 4.2
4.20
4.2 4.5 4.5 4.5 4.9 4.9 4.9
SHR 0.51 0.69 0.93 0.52 0.71 0.95 0.52
0.74
0.95 0.53 0.78 0.96 0.56 0.83 0.95
VHA12
BTUh 13877 13346 1235
5 13216 12461 11493 12697
11800
10443 11894 10561 9310 10585 9110 8048
WATTS 917 932 942 999 1009 1022 1124
1124
1124 1215 1214 1217 1325 1325 1331
AMPS 4.1 4.2 4.2 4.5 4.5 4.5 5
5.00
5 5.4 5.4 5.4 5.9 5.9 5.9
SHR 0.49 0.67 0.9 0.5 0.7 0.92 0.51
0.72
0.92 0.52 0.76 0.93 0.54 0.81 0.92
VHA18
BTUh 21168 20358 18846 20160 19008 17532 19368
18000
15930 18144 16110 14202 16146 13896 12276
WATTS 1536 1560 1577 1673 1690 1711 1882
1882
1882 2034 2033 2038 2219 2219 2228
AMPS 7.6 7.7 7.7 8.2 8.2 8.3 9.2
9.20
9.2 9.
9 9.9 9.9 10.8 10.8 10.8
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49
0.70
0.9 0.5 0.74 0.9 0.53 0.79 0.9
VHA24
BTUh 27636 26579 24605 26320 24816 22889 25286
23500
20798 23688 21033 18542 21080 18142 16027
WATTS 2019 2051 2073 2199 2222 2249 2474
2474
2474 2674 2672 2679 2917 2917 2929
AMPS 9.3 9.3 9.4 10 10 10.1 11.1
11.2
11.3 12.1 12.1 12.1 13.1 13.1 13.2
SHR 0.48 0.65 0.88 0.49 0.68 0.89 0.49
0.7
0.9 0.5 0.74 0.9 0.53 0.79 0.9
RATING POINT
ARI 310/380
* Operation above these listed temperatures may result in
lowered
performance or unit fatigue.
* Operation above these listed temperatures may result in lowered
performance or unit fatigue.
10
ELECTRICAL REQUIREMENTS
Wire Size
Unit MUST
Sample Nameplate
120524
COOLING EQUIPMENT
FOLLOWING ITEMS
OUTDOOR GRILLE
INDOOR GRILLE
SAMPLE
Electrical Rating Tables
41A51
21A02
01A03
All 208/230v chassis must be hard wired with properly sized breaker. See nameplate for specic chassis electrical
Supply voltage
requirements. See gure 9 (Page 12) for unit wiring and wall thermostat wiring. See Electrical Rating Table below for wire siz
Use HACR type breakers to avoid nuisance trips. All eld wiring must be done in accordance with NEC and local codes.
NOTICE
ELECTRIC SHOCK HAZARD
WARNING
Turn off electric power before service or instal-
lation. All electrical connnections and wiring
MUST be installed by a qualified electrician and
conform to the National Electrical Code and all
local codes which have jurisdiction. Failure to
do so can result in personal injury and/or death.
ELECTRIC SHOCK HAZARD
Not following the previous WARNING could result in fire or
electrically unsafe conditions which could cause moderate
or serious property damage. Read, understand and follow
the previous warning.
Supply voltage to the unit should be a nominal 208/230 volts. It must be between 197 volts and 253 volts. Supply voltage to
the unit should be checked WITH THE UNIT IN OPERATION. Voltage readings outside the specified range can be expected
to cause operating problems. Their cause MUST be investigated and corrected.
“Use ONLY time delayed fused disconnect or HACR type circuit breaker as indicated on the unit’s rating plate (see
sample on this page). Proper current protection to the unit is the responsibility of the owner”.
11
CONNECTIONS
Remote Thermostat
To control the unit with a wall-mounted thermostat:
1) Pull the disconnect switch.
2) Unscrew and remove the control box panel.
3) After selecting which side you want to run your thermostat
wire through, run the wires through the side hole in the box
to reach the connection terminal for the wiring.
4) Make the wire connections, appropriately matching the
wires as shown in the wiring diagram.
5) Once each wire is matched and connected, the unit is now
controlled by the thermostat.
6) Reattach the control box cover.
RT5 (Two speed fan) RT4 (One speed fan)
Cool Off Heat
Auto On
All Friedrich Vert-I-Pak units are factory configured to be
controlled by using a 24V single stage remote wall mounted
thermostat. The thermostat may be auto or manual changeover
as long as the control configuration matches that of the
Vert-I-Pak unit.
NOTE: An improperly operating, or poorly located room
thermostat can be the source of perceived equipment
problems. A careful check of the thermostat and wiring
must be made then to insure that it is not the source of
problems.
Manual Changeover Thermostat
For Heat Pump equipped units: a single stage, heat/cool
thermostat with a terminal for a reversing valve operation is
required. Terminal “B” should be continuously energized in the
heat mode and terminal “G” should be energized whenever
there is a call for heating or cooling. (Typically, a single stage,
heat/cool thermostat designed for use with electric heat
systems will meet the above requirements).
Location
The thermostat should not be mounted where it may be
affected by drafts, discharge air from registers (hot or cold),
or heat radiated from the sun or appliances.
The thermostat should be located about 5 Ft. above the
fl oor in an area of average temperature, with good air
circulation. Close proximity to the return air grille is the
best choice.
Mercury bulb type thermostats MUST be level to control
temperature accurately to the desired set-point. Electronic
digital type thermostats SHOULD be level for aesthetics.
Thermostat Location
12
CONNECTIONS
Desk Control Terminals
The Friedrich VERT-I-PAK has built-in provisions for
connection to an external switch to control power to the unit.
The switch can be a central desk control system or even a
normally open door switch.
For desk control operation, connect one side of the switch to
the D1 terminal and the other to the D2 terminal (See figure 9).
Whenever the switch closes, the unit operation will stop.
Maximum Wire Length for Desk Control Switch
Wire Size Maximum Length
#24 400 ft.
#22 600 ft.
#20 900 ft.
#18 1500 ft.
#16 2000 ft.
Auxiliary Fan Control
The Smart Center also has the ability to control a 24VAC
relay to activate an auxiliary, or transfer, fan. The outputs
are listed as F1 and F2 on the control board.
To connect the relay, simply wire one side of the relay to
F1 and the other side to F2. Anytime that the fan runs, the
terminals will send a 24VAC signal to the relay. The relay
must be 24 VAC, 50mA or less.
Note: The relay and auxiliary fans must be field supplied.
Note: The desk
control system and
switches must be
field supplied.
Thermostat Connections
Thermostat Configuration
C = Common Ground
W = Call for Heating
Y = Call for Cooling
R = 24V Power from Unit
GL = Call for Fan (Low Speed)
GH = Call for Fan (High Speed)
B = Reversing Valve Energized in heating mode
*If only one G terminal is present on thermostat, connect
to GL for low fan or to GH for high fan operation.
NOTE: It is the installer’s responsibility to ensure that all
control wiring connections are made in accordance with
the Freidrich installation instructions. Improper connec-
tion of the thermostat control wiring and/or tampering with
the unit’s internal wiring can void the equipment warranty.
Questions concerning proper connections to the unit
should be directed to the factory: 210-357-4400.
An improperly configured t-stat can be the
cause of improper operation. Ensure to
correctly configure the t-stat (see owner’s
manual).
13
The new Friedrich Vert-I-Pak has state of the art features to improve guest comfort and conserve energy. Through
the use of specically designed control software, Friedrich has accomplished what other Manufacturer’s have only
attempted – a quiet, dependable, affordable and easy to use Vert-I-Pak.
Below is a list of standard features on every Friedrich VPAK and their benet to the owner.
Quiet Start/Stop
Fan Delay
The fan start and stop delays prevent abrupt changes in room acoustics due to the compressor energizing
or stopping immediately. Upon call for cooling or heating the unit fan will run for ve seconds prior to en-
ergizing the compressor. Also, the fan off delay allows for “free cooling” by utilizing the already cool indoor
coil to its maximum capacity by running for 30 seconds after the compressor.
Remote Thermostat
Operation
VPAK units are thermostat controlled.
Internal Diagnostic
Program
The new Friedrich digital VPAK features a self diagnostic program that can alert maintenance to compo-
nent failures or operating problems. The internal diagnostic program saves properties valuable time when
diagnosing running problems.
Service Error Code
Storage
The self diagnosis program will also store error codes in memory if certain conditions occur and correct
themselves such as extreme high or low operating conditions or activation of the room freeze protection
feature. Storing error codes can help properties determine if the unit faced obscure conditions or if an error
occurred and corrected itself.
Room Freeze
Protection
When the VPAK senses that the indoor room temperature has fallen to 40°F the unit will cycle on high fan
and the electric strip heat to raise the room temperature to 46°F then cycle off again. This feature works
regardless of the mode selected and can be turned off. The control will also store the Room Freeze cycle
in the service code memory for retrieval at a later date. This feature ensures that unoccupied rooms do not
reach freezing levels where damage can occur to plumbing and xtures.
Random
Compressor Restart
Multiple compressors starting at once can often cause electrical overloads and premature unit failure.
The random restart delay eliminates multiple units from starting at once following a power outage or initial
power up. The compressor delay will range from 180 to 240 seconds.
Digital Defrost
Thermostat
The new Friedrich VPAK uses a digital thermostat to accurately monitor the outdoor coil conditions to allow
the heat pump to run whenever conditions are correct. Running the VPAK in heat pump mode save energy
and reduces operating costs. The digital thermostat allows maximization of heat pump run time.
Instant Heat
Heat Pump Mode
Heat pump models will automatically run the electric heater during compressor lock-out to quickly provide
heat when initially energized, then return to heat pump mode. This ensures that the room is heated quickly
without the usual delay associated with heat pump units.
Emergency Heat
Override
In the event of a compressor failure in heat pump mode the compressor may be locked out to provide heat
through the resistance heater. This feature ensures that even in the unlikely event of a compressor failure
the room temperature can be maintained until the compressor can be serviced.
Desk Control Ready
All electronic VPAK units have low voltage terminals ready to connect a desk control energy management
system. Controlling the unit from a remote location like the front desk can reduce energy usage and
requires no additional accessories at the VPAK.
Indoor Coil Frost
Sensor
The frost sensor protects the compressor from damage in the event that air ow is reduced or low outdoor
temperatures cause the indoor coil to freeze. When the indoor coil reaches 30
°F the compressor is
diabled and the fan continues to operate based on demand. Once the coil temperature returns to 45°F the
compressor returns to operation.
Ultra-Quiet Air
System
The VPAK series units feature a indoor fan system design that reduces sound levels without
lowering airow and preventing proper air circulation.
High Efciency
The VPAK benets quality components and extensive development to ensure a quiet, efcient and
dependable unit.
Rotary Compressor
High efciency rotary compressors are used on all Friedrich VPAKs to maximize durability and efciency.
Auxiliary Fan Ready
The VPAK features a 24V AC terminal for connection to an auxiliary fan that may be used to transfer air to
adjoining rooms. Auxiliary fans can provide conditioning to multiple rooms.
14
Low fan
High fan
Fan only
Power
Temp
Temp
Cool
Heat
1 2 3 4 5 6 7 8
O
N
Electronic Control Configuration
The adjustable control dip switches are located at the lower
left hand portion of the digital Smart Center. The inputs are
only visible and accessible with the front cover removed from
the Unit.
Factory Dip Switch Configuration
Dip Switch Setting
Switches 1-4 ON
Switch 5-7 OFF
Switch 8 ON
Room Freeze Protection – Switch 6
Units are shipped from the factory with the room freeze protec-
tion disabled. Room Freeze Protection can be switched on at
the owner’s preference by moving Dip Switch 6 to ‘ON’. This
feature will monitor the indoor room conditions and in the event
that the room falls below 40°F the unit will cycle on high fan with
the electric heater. This occurs regardless of mode.
Emergency Heat Override – Switch 7
Units are shipped from the factory with the room emergency
heat override disabled. In the unlikely event of a compressor
failure a heat pump unit may be switched to operate in only the
electric heat mode until repairs can be made, by moving Dip
Switch 7 to ‘ON’.
Discharge Air Sensor Override – Switch 8
This switch MUST remain in the “ON” position for Vert-I-Pak
models, since they do not use a discharge air sensor. If the
switch is positioned in the “OFF” position on these models it
will result in the erroneous display Error Code 14 indicating that
the Discharge air temperature sensor is open or shorted.
Note: In order for the control to recognize “Dip” switch
setting changes, the unit must be disconnected
from power supply when making any configuration
changes.
Error Code Diagnostics
The VPAK electronic control continuously monitors the Vert-I-Pak
unit operation and will store error codes if certain conditions
are witnessed. In some cases the unit may take action and shut
the unit off until conditions are corrected.
To access the error code menu press the ‘HEAT’ and ‘HIGH
FAN’ buttons simultaneously for three seconds. If error codes
are present they will be displayed. If multiple codes exist you
can toggle between error codes using the temp up ▲ button. To
clear all codes press the temp down ▼ button for three seconds
while in the error code mode. To exit without losing codes
press the ‘Low Fan’ button.
Button Location for Vert-I-Pak Models
With the remote thermostat escutcheon installed, the button
locations to access the diagnostics mode can be located as
shown below.
Electronic Control Error Code
Diagnostics and Test Mode
* Heat and high fan - access error codes
* Temp up ▲ and temp down ▼ - toggle between error codes
* Low fan - exit error code mode without losing stored error
codes.
* Temp down ▼ - clears all error codes
NOTE: Hold buttons down for three seconds.
15
TEST MODE (
The chart below lists the possible error codes and their description:
Error
Code Code Translation Action Taken by Unit Possible Cause
EF “Error Free” - No Codes Stored None Unit Operating Normally
02 An extreme low voltage condition
exists <198V for 230V units and
<239V for 265V units.
Shut down unit. Display Error code and
ash. Once voltage rises to normal level
system power is restored.
• Inadequate power supply
• Defective breaker
• Blown fuse
03 Return air thermistor sensor open or
short circuit
Set return air sensor = 75°F. Alte
rnately
ash set point and error code. Leave unit
running.
• Defective sensor
04 Indoor coil thermistor sensor open or
short circuit
Set ID coil temp = 40°F. Alternately ash
set point and error code. Leave unit running.
• Defective sensor
05 Outdoor coil thermistor sensor open
or short circuit
Set OD coil temp = 20°F. Alternately ash
set point and error code. Automatically
change over to Electric heat Mode only.
Leave unit running.
• Defective sensor
06 If
O.D. coil Temperature > 175° F for
2 consecutive minutes. (Heat Pump
models only)
Alternately ash set point and error code.
Shut unit down for 5 minutes, then try again
2 times, if fails the 3rd time then shut down
unit.
• Dirty coil
• Fan motor failure
• Restricted air ow
• Non-condensables in refrigeration system
07 I.D coil temperature <30° F for 2
consecutive minutes.
Alternately ash set point and error
code. Continue fan operation while the
compressor is
locked out until the indoor
coil thermistor reaches 45° F, then energize
the compressor. However, compressor
must still wait a lockout time of 180 to 240
seconds.
• Dirty lters
• Dirty coil
• Fan motor failure
• Restricted airow
• Improper refrigerant charge
• Restriction in refrigerant circuit
08 Unit cycles (Heat or Cool demand) >
9 times per hour
Store error code in memory.
Keep unit running
• Unit oversized
• Low load conditions
09 Unit cycles (Heat or Cool
demand) <
3 times per hour
Store Error Code in memory.
Keep unit running
• Unit undersized
• High load conditions
10 Room Freeze Protection triggered Alternately ash set point and error code.
Keep unit running.
• Room temperature fell below 40°F
11 No Signal to “GL or “GH” terminal Shut down unit. Display error code and
ash.
• Defective remote thermostat
• Defective thermostat wiring
13
VPAK
24K BTUs
ONLY
High Pressure switch open Turn OFF compressor. Flash error code • Dirty coil
• Fan motor failure
• Restricted air flow
• Non-condensables in refrigeration system
The Friedrich Smart Center continuously monitors the VPAK unit operation and will store service codes if
certain conditions are witnessed. In some cases the unit may take action and shut the unit off until conditions are
corrected. To access the error code menu press the ‘Heat’ and ‘High Fan’ buttons simultaneously for three sec-
onds. If error codes are present they will be displayed. If multiple codes exist you can toggle between messages
using the temp up button. To clear all codes press the temp down button for three seconds while in the error code
mode. To exit without changing codes press the ‘Low Fan’ button.
For service and diagnostic use only, the built-in timers and delays on the VPAK may be bypassed by pressing the ‘Cool’ and
‘Low Fan’ buttons simultaneously for three seconds while in any mode to enter the test mode. CE will be displayed when en-
tering test mode, and oE will be displayed when exiting. The test mode will automatically be exited 30 minutes after entering it
or by pressing the ‘Cool’ and ‘Low Fan’ buttons simultaneously for three seconds.
Note: To access the Test Mode while under remote wall thermostat operation, remove thermostat’s wires at the
terminal block on the electronic control board then connect a jumper wire between GL and GH.
16
Wall Thermostat Connections:
• The control is compatible with a st
andard single stage heat and cool Wall
Thermostat.
• It is compatible with Friedrich RT4 and RT5 Wall thermostats.
• Terminals are:
C – Common ground terminal.
W – call for heating.
Y – call for cooling,
R – 24V power from Electronic control to Wall Thermostat.
GL - call for low Fan.
GH- call for high fan
B – call for heat pump reversing valve.
The outputs of a single stage Heat and Cool Wall thermostat:
• When a call for cool from Wall thermostat the signals will go to
terminal Y, GL or GH.
• When a call for heat from Wall thermostat the signals will go to
terminal W, B, GL or GH.
• When a call for Fan Only from Wall thermostat the signals will go
to terminal GL or GH.
Remote T-stat Operation Features:
All buttons on the electronic control board will be disabled except “Heat”
When power is applied to L1 and L2, the Power LED will be lit on the
electronic control.
and “High Fan” buttons during Error code mode operation.
COMMON CONTROL FEATURES FOR COOL WITH ELECTRIC HEAT
AND HEAT PUMP WITH ELECTRIC HEAT UNITS:
Power On and Off Features on the Electronic Control:
Temperature set:
This feature will depend on Wall Thermostat.
˚F/˚C set:
This feature will depend on Wall Thermostat.
Fan speed, fan cycle on/off or continuous operation
This feature will depend on Wall Thermostat. For single speed Wall
Thermostat, user needs to choose between GH terminal (High Fan) or
GL terminal (Low Fan). For a two speed fan Wall Thermostat, connect
both GL and GH. If the PCB receives signals for both GL and GH at the
same time, only High Fan turns on.
17
Reversing valve:
Always de-energized when “Cool” switch is selected on thermostat.
Compressor operation:
If ambient indoor temperature is above set point temperature depending on t-stat differential and
the compressor is not time delayed, turn on compressor. If ambient indoor temperature is
below set point depending on t-stat differential, turn off the compressor.
Compressor time delay:
The time delay feature is de-energized for a period of time that varies randomly from 180 to
240 seconds. Compressor time delay is initiated every time the compressor is “off” due to:
(1) Satisfying the temperature set point,
(2) Changing mode to fan only
(3 )Turning the unit off.
(4) Control is rst energized or when power is restored after failure
Note: Time delay is disabled during Test Mode.
Indoor coil frost protection (Error Code 07):
While in cool mode: If the indoor coil frost protection sensor reads 30°F for 2 minutes continu-
ously, turn off the compressor, but continue fan operation. While the compressor is out and the
fan is running: when the indoor coil frost protection sensor reaches 45°F, turn on the compres-
sor. However, the compressor must still wait a standard time of 180 to 240 seconds. While 07
ash, heat operation is disabled.
Fan delay:
This is only for fan ‘cycle’ mode and not for fan ‘continuous’ mode. When unit cycles cool-
ing ON – start the fan 5 seconds EARLY. When unit cycles cooling OFF – DELAY the fan off
for 30 seconds. Note: the fan delay is disabled during Test Mode.
Reversing valve: Always de-energized when “Heat” button is pushed.
Compressor operation: Compressor does not operate in this mode.
Electric heat operation: If temp is below set point, depending on t-stat differential, turn on
electric heat. If Ambient is above set point depending on t-stat differential, turn off the electric
heat.
Fan delay: This is only for fan ‘cycle’ mode and not for fan ‘continuous’ mode. When unit
cycles heating ON – start the fan 5 seconds EARLY. When unit cycles heating OFF – DELAY
the fan off for 15 seconds. Note: the fan delay is disabled during Test Mode.
18
Reversing valve:
Always energized when “Heat” is selected on thermostat.
Compressor operation depends on t-stat settings:
If ambient indoor temperature is below the set point temperature depending on t-stat differential
and the compressor is not time delayed, turn on compressor. If ambient indoor temperature is
below set point depending on t-stat differential, turn off the compressor.
Compressor Time Delay:
The time delay feature is de-energized for a period of time that varies randomly from 180 to 240
seconds. Compressor time delay is initiated every time the compressor is “off” due to:
(1) Satisfying the temperature set point,
(2) Changing mode to fan only
(3 )Turning the unit off.
(4) When control is rst energized or when power is restored after failure
Note: Time delay is disabled during Test Mode.
Heat:
When there is a call for heat from the Wall thermostat the PCB will receive signals on terminal
W, B, GL or GH. During compressor time delay, electric heat will turn on rst. When com-
pressor time delay is UP, the compressor will turn on.
Condition:
If outdoor coil temperature sensor drops to 30°F for less than 2 consecutive minutes, then unit
will switch to electric heat. Thereafter, unit will switch back to Heat Pump heat if outdoor coil
temperature sensor rises to 45°F or greater.
Fan delay:
This is only for fan ‘cycle’ mode and not for fan ‘continuous’ mode. When unit cycles cool-
ing ON – start the fan 5 seconds EARLY. When unit cycles cooling OFF – DELAY the fan off
for 30 seconds. Note: the fan delay is disabled during Test Mode.
Emergency Heat:
When compressor fails in heating season, allows user to disable Heat Pump. Heating with elec-
tric heat only (See DIP switch position 7).
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