CY0
W2
R
E
T1
T2
C
Y
0
0
W2
R
DFT
E
DF1
DF2
DEFROST CONTROL BOARD
CONTACTOR
RIGHT
LEFT
T2
T1
L1
L2
SINGLE PHASE
FIELD SUPPLY
GROUNDING
LUG
HIGH PRESS.
SWITCH
LOW PRESS.
SWITCH
COMPRESSOR
H
C
T1
T2
T3
CCH
ECM
ECM WIRING NOTES:
1) FOR 825 RPM ATTACH WHITE TO RIGHT CONTACTOR. (FOR SKUS 919660,919661,919662,919664)
2) FOR 960 RPM ATTACH YELLOW TO RIGHT CONTACTOR. (FOR SKU 919663)
3) FOR 1100 RPM ATTACH WHITE AND YELLOW TO RIGHT CONTACTOR.
Defrost
Thermostat
Reversing Valve
Solenoid
Start Capacitor
Start
Relay
1
5
2
BLACK
YELLOW/BLACK
YELLOW
YELLOW
YELLOW/BLACK
BLACK
BLACK
BLACK
BLACK
YELLOW
RED
RED
RED
SEE ECM WIRING NOTES
BROWN
BLACK
BLACK
BLUE
WHITE
YELLOW
BLACK
BLUE
GREEN
TO UNIT
GROUND LUG
E
Defrost Control Board
DFT
Control
Logic
DF1
DF2
DFT
1
2
3
4
1
R
W2
O
Y
C
T2
T1
R
W2
O
Y
C
RVS
HPS
CC
Split System Heat Pump (Outdoor Section) Single Phase
WIRING DIAGRAM
NOTES:
1. Disconnect all power before servicing.
2. For supply connections use copper conductors only.
3. Not suitable on systems that exceed 150 volts to ground.
4. For replacement wires use conductors suitable for 105˚C.
5. For ampacities and overcurrent protection, see unit rating plate.
6. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler
installation instructions for control circuit and optional
relay/transformer kits.
Defrost Board Operation:
1. Closing during defrost. Rating: 1 Amp.Max
2. Opens during defrost. Rating: 2HP at 230 Vac Max.
3. Closed when “Y” is on. Open when “Y” is off.
Provides “off” delay time of 5 min. when “Y” opens.
4. With DFT closed and “Y” closed, compressor run
time is accumulated. Opening of DFT during
defrost or interval period resets the interval to 0.
CC - Contactor Coil
CCH - Crankcase Heater
DFT - Defrost Thermostat
HPS - High Pressure Switch
RVS - Reversing Valve Selenoid
* - Hard Start Kit Field Installed
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 volt a la terre.
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
Compressor
R
C
S
HC
CCH
L1
T1
L2
T2
Compressor
Contacts
ECM
208/230V
710659B
(Replaces 710659A)
0312
