Trane ADAPTIVE CONTROL UCM-CLD Installation Operation & Maintenance

Brand: Trane

Model: ADAPTIVE CONTROL UCM-CLD

Type: Installation Operation & Maintenance

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UCM-CLD

Operating and control

principles

Installation

Operation

Maintenance

L80 IM 025 E

These Installation, Operation, and Maintenance

instructions are given as a guide to good practice in the

installation, start-up, operation, and periodic

maintenance by the user of UCM-CLD modules.

They do not contain the full service procedures

necessary for the continued successful operation of this

equipment. The services of a qualified service

technician should be employed, through the medium of

a maintenance contract with a reputable service

company.

FFoorreewwoorrdd

Warranty is based on the general terms and conditions

of the manufacturer. The warranty is void if the

equipment is modified or repaired without the written

approval of the constructor, if the operating limits are

exceeded, or if either the control system or the

electrical wiring is modified.

Damage due to misuse, lack of maintenance, or failure

to comply with the manufacturer's instructions, is not

covered by the warranty obligation.

WWaarrrraannttyy

On arrival, inspect the unit before signing the delivery

note. Specify any damage on the delivery note, and

send a registered letter of protest to the last carrier of

the goods within 72 hours of delivery. Notify the local

sales office at the same time.

The unit should be totally inspected within 7 days of

delivery. If any concealed damage is discovered, send a

registered letter of protest to the carrier within 7 days

of delivery and notify the local sales office.

Units are shipped with the refrigerant operating or

holding charge, and should be examined with an

electronic leak detector to determine the hermetic

integrity of the unit. The refrigerant charge is not

included in the standard Warranty Cover.

RReecceeppttiioonn

About this manual

Cautions appear at appropriate places in this

instruction manual. Your personal safety and the

proper operation of this machine require that you

follow them carefully.

The manufacturer assumes no liability for installations

or servicing performed by unqualified personnel.

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Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Principles of operation of the UCM-CLD module

General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Operator’s interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Default description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Unit operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Compressor operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Maintenance contract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Chiller report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Refrigerant report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Compressor report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Operator’s settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Service settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Service tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Description of the operation

Diagnostics

Figure 1: Operator’s interface

General information

This regulation assembly is composed of 6 electronic

modules which have each their own 115V power

supply and communicate with each other via a serial

link. Each module has a set of functions which are

associated to make the unit regulation.

Each module has the following name linked to its

functions.

- MCSP (Motor Compressor Start and Protection):

safety, protection and control of the helical-rotary

compressor as well as all associated components.

- CPM (Chiller Protection and Management): safety,

protection, and control of the chiller.

- EXV (Electronic Expansion Valve): control of both

electrical expansion valves.

- CSR (Communication and Setpoint Reset): control of

the serial communication, unit external setpoints, and

ice-making mode (optional module).

- Local CLD (Local Clear Language Display): operator’s

interface located in the unit: front panel (software

version and number displayed at power-up).

- Remote LCD (Remote Clear Language Display):

operator’s interface located up to 1500 m from the

unit at the operator’s, and which can communicate

with up to four units of the same type (optional

module).

- TCI IV, IPCB (Tracer Communication Interface 4,

Inter-Processor Communication Buffer): protection of

the unit internal communication bus from the external

interferences existing in the unit (optional module,

compulsory when using a remote CLD, and which

must be factory-mounted).

Compressor

Report

Refrigerant

Report

Chiller

Report

Custom

Report

Select Report Group

Diagnostics

Service

Tests

Service

Settings

Operator

Settings

Alarm

AutoEnterPrevious

StopCancelNext

Select Setting Group

ADAPTIVE CONTROL™

Principles of operation of the module UCM-CLD

Figure 2: Control and regulation panel mounted on helical-rotary units equipped with UCM-CLD

Operator’s interface (Figure 1)

Digital display

The display of control regulation and operating

parameters, as well as diagnostic and error messages,

is made on a two-line 40-character liquid crystal

display.

When powering-up the system, the display is not lit

and the message “Self-test in progress” is displayed in

order to make sure the display operates properly.

The screen allows to display:

- The error codes.

- The settings of the various setpoints.

- The specified temperature and pressure values.

- The status of operating parameters and various

options.

Keyboard

A 16-key touch pad allows the operator to move within

the various menus and to modify their parameters and

setpoints.

The keys are divided into two groups.

Menu keys

- Chiller Report menu

- Custom Report menu

- Refrigerant menu

- Compressor menu

- Operator settings menu

- Service settings menu

- Service test menu

- Diagnostics menu

These 8 keys allow to access each of these menus.

Control keys

- + key

- - key

- Previous key

- Next key

- Enter key

- Cancel key

- Auto key

- Stop key

These 8 keys allow the operator to move within the

various menus and to modify their parameters.

Remark: All the menus and setpoints cannot be

accessed by the chillers operator; Service Settings

and Service Test menus are protected by a password

and are reserved for Trane engineers.

The whole information is gathered in various menus

according to the location of the sensor and/or the

function performed.

Chiller report menu

This menu gathers the information relating to the liquid

chiller (reading only). Active setpoints and their origins,

chilled water, air temperature, current draws, are found

in this menu.

Custom report menu

This menu is peculiar because originally it does not

include any information at all. However, the operator

can build his own menu which is comprised of read-

only information, by simply pressing the + key when in

other menus. To remove information from this menu,

simply press the - key when displayed.

Refrigerant report menu

This menu gathers the information, read-only, relating

to the refrigerant. Refrigerant pressures and

temperatures at various points of the refrigerant circuit

can be found in this menu.

Compressor report menu

This menu gathers the information, read-only, relating

to the compressor. Voltages and amps, hour and start

counters, as well as oil temperature (GP compressor

only) can be found in this menu.

Operator settings menu

This menu comprises all the particular setpoints and

operating modes existing in the unit and which are

accessible by the usual operator of the chiller. In

addition, the following can be programmed: chilled

water pump operation, temperature resets, ice-making

operation, and low ambient limit.

Service settings menu

This menu has three access levels. The first one

contains information which can be adjusted by the

customer such as the unit voltage, the validation of

over/under voltage protection, the display language,

and the programmable relay function of the units. The

keyboard can also be locked if the relating function is

validated. A second level contains the setpoints

adjusted by the service engineer to adapt the operation

of the unit to a particular site, such as the address of

the serial link, the water and refrigerant limit

parameters, and so forth. The third level contains the

configuration and protection information: number of

circuits, compressors and fans, compressor amps and

expansion valve settings.

Service tests menu

This menu allows the operator to perform some tests

when the unit is in operation or during the initial start-

up of the unit: expansion valve test, circuit locking, or

pump-out.

Diagnostics menu

This menu contains all the information on the current

faults or faults that occurred in the past. It allows the

possibility to reset a manual reset fault or to erase the

historic list of faults.

Description of the operation

Previous key

Pressing the Previous key allows the operator to

scroll up to the previous information in the current

menu. All the display items are looped, so it is

possible to scroll from the first item to the last one.

Next key

Pressing the Next key allows the operator to scroll

down to the next information in the current menu. All

the display items are looped, so it is possible to scroll

from the last item to the first one.

+ key

If this information displayed is a read-only item,

pressing the + key will add it to the operator’s menu.

if the information can be modified, the value is

increased by 1. Pressing the key for longer than 1

second will increase the value of 1 every .25 seconds.

A logical stop prevents an adjustment higher than the

maximum value; a message is displayed to indicate

this status.

- key

If the information displayed is a read-only item,

pressing the - key will remove it from the operator’s

menu. If the information can be modified, the value is

increased by 1. Pressing the key for longer than 1

second will increase the value of 1 every .25 seconds.

A logical stop prevents an adjustment higher than the

maximum value; a message is displayed to indicate

this status.

Enter key

Pressing this key allows the validation of a value after

it has been modified by pressing the + or - key.

Cancel key

Pressing this key allows the cancellation of a value

after it has been modified by pressing the + or - key

and to come back to the original value.

Auto key

Pressing this key (green) allows the unit to come back

in auto mode if it was previously placed in stop mode

with the stop key. The unit cannot be forced into auto

mode if it has been stopped by an external contact or

the serial link. When the unit is stopped by the remote

interface (Remote CLD), the local “auto” mode order

is prioritary.

Stop key

Pressing this key (red) allows the unit to go into stop

mode. In every case, and wherever the origin (except

a local stop), the stop order and stop status have

priority over a run order. The stop generated is a soft

stop, meaning the unit unloads before stopping.

Chiller report: status, water temperatures and setpoints

“Press (Next) (Previous) to continue”

Unit model

(service setting menu)

all others RTXA

Mode: [OPERATING MODE]

Request setpoint source: [SETPOINT SOURCE]

Chiller Mode: [OPERATING MODE]

Request setpoint source: [SETPOINT SOURCE]

Heat Mode: [OPERATING MODE]

Request setpoint source: [SETPOINT SOURCE]

Compressors on A, B, C, D, NONE

Circuits locked out CIRCUIT 1, CIRCUIT 2, NONE

[Operating mode]

Making ice,

ice-making complete All others

Active ice termination setpoint XXX C

Evaporator entering water temperature XXX.X C

Active chilled water setpoint XXX C

Evaporator leaving water temperature XXX.X C

Active hot water setpoint XXX C

Leaving water temperature XXX.X C

Evaporator entering water temperature XXX.X C

Evaporator leaving water temperature XXX.X C

Fan control

(Service Setting Menu)

Disable Enable

Condenser entering water temperature XXX.X C

Condenser leaving water temperature XXX.X C

Water heat recovery entering water temperature XXX.X C

Water heat recovery leaving water temperature XXX.X C

Active current limit setpoint XXX %

Chiller % Rated load amps XXX %

* Outdoor air temperature XXX.X C

** Zone temperature XXX.X C

[operating mode] will be one of

Reset

Stopped by Local Display

Stopped by Remote Display

Stopped by Tracer

Stopped by External Source

Auto

Waiting, Restart Inhibit

Starting

Running

Running, Current Limit

Running, Condenser Limit

Running, Evaporator Limit

Stopping

Making ice

ice-making complete

Low ambient temperature lockout

Electronic expansion valve test

Manufacturing test

Service pumpdown

* Dashes will be displayed if the sensor is open

or shorted and neither outdoor air reset or

low ambient lockout is enabled.

** Dashes will be displayed if the zone

temperature sensor is open or shorted or

zone reset is disabled.

Chiller report

Chiller

report

Refrigerant temperature and pressure report

“Press (Next) (Previous) to continue”

All others RTXA

Circuit 1 Circuit Mode: [Circuit mode]

Circuit 1 evaporator refrigerant pressure XXX bar

Circuit 1 condenser refrigerant pressure XXX bar

Circuit 1 compressor suction refrigerant temperature XXX.X C

Circuit 1 saturated evaporator refrigerant temperature XXX.X C

Circuit 1 saturated condenser refrigerant temperature XXX.X C

All others RTXA

Circuit 2 Circuit Mode: [Circuit mode]

Circuit 2 evaporator refrigerant pressure XXX bar

Circuit 2 condenser refrigerant pressure XXX bar

Circuit 2 compressor suction refrigerant temperature XXX.X C

Circuit 2 saturated evaporator refrigerant temperature XXX.X C

Circuit 2 saturated condenser refrigerant temperature XXX.X C

Refrigerant report

Refrigerant

report

The possible replacement to

Cooling

Heating

Defrosting

Heat to Defrost

Defrost to Heat

Cool to Heat

Heat to Cool

Compressor report: Mode, Hours, Starts, Rated load amps

“Press (Next) (Previous) to continue”

Compressors on A, B, C, D, NONE

Circuits locked out Circuit 1, Circuit 2, NONE

% line volts XXX %

* Compressor A mode [MODE]

Compressor A % Rated load amps, average XXX %

Compressor A % Rated load amps, high phase XXX %

Tonnage of unit

130-400 Tons 70-125 Tons

Compressor A entering oil temperature XXX C

Compressor A starts XXXXX

Compressor A running hours XXXXX

After review of last compressor Compressor B, C, D

* Display will change according to compressor

reviewing

Compressor A mode

Compressor B mode

Compressor C mode

Compressor D mode

[MODE]

Stopped

Locked out

Waiting for restart inhibit time

Starting

Running

Run-condenser limit

Run-evaporator limit

Run-current limit

Stopping

Service pumpdown

Compressor report

Compressor

report

Chiller operation settings and setpoints

“Press (Next) (previous) to continue”

Setpoint source [SOURCE]

“Press (+) (-) to change setting”

All others RTXA

Front panel chilled water setpoint XXX C

“Press (+) (-) to change setting”

External chilled water setpoint [Disable/Enable]

“Press (+) (-) to change setting”

Design delta temperature setpoint XXX C

“Press (+) (-) to change setting”

Front Panel Chilled Water Setpoint XXX C

“Press (+) (-) to change setting”

Front Panel Hot Water Setpoint XXX C

“Press (+) (-) to change setting”

External Chilled Water Setpoint [Disable/Enable]

“Press (+) (-) to change setting”

External Hot Water Setpoint [Disable/Enable]

“Press (+) (-) to change setting”

Cooling Design Delta Temperature Setpoint XXX C

“Press (+) (-) to change setting”

Heating Design Delta Temperature Setpoint XXX C

“Press (+) (-) to change setting”

Differential to start setpoint XXX C

“Press (+) (-) to change setting”

[SOURCE]

Local

Tracer

Operator settings

Operator

settings

Default = 6.7°C

Select = - 17.8 to 18.3°C

* If “Limited by cutout setpoint, (+) to change” is

displayed, refer to the section on “Leaving water

temperature cutout” and “Low refrigerant

temperature cutout.”

Default = Disable

Default = 5.5 °C

Select = -16 to +2°C

This is difference between the entering and

leaving chilled water temperature.

Default = 1.1°C

Select = 16.6 to 1.1°C

The temperature which is added the chilled water

setpoint, at which the chiller will start.

Default = ON. Manual override of chilled water

pump off delay

AUTO = activates the “Chilled water pump off

delay”

Chilled water pump [ON, AUTO]

“Press (+) (-) to change setting”

Chilled water pump off delay [MINUTES]

“Press (+) (-) to change setting”

Front panel current limit setpoint XXX %

“Press (+) (-) to change setting”

External current limit setpoint [Disable/Enable]

“Press (+) (-) to change setting”

Low ambient lockout [Disable/Enable]

“Press (+) (-) to change setting

Low ambient lockout

(Operator settings menu)

Enable Disable

Low ambient lockout setpoint XXX C

“Press (+) (-) to change setting

[MINUTES]

Default = 10 minutes

Select = 1 minute to 30 minutes

The time period that the chilled water pump will

run, once the stop signal is given to the chiller.

Default = 120%

Select = 40% to 120%

Default = Disable

Default = -6.6°C

Select: -28°C to 16°C

Default = Disable

Select = Return water

Zone

Outdoor air

[TYPE]

Return water

Default = 50%

Range = 10% to 120%

Zone

Default = 100%

Range = 50% to 300%

Outdoor

Default = 10%

Range = -80% to 80%

[TYPE]

Return:

Default = 2,7°C

Range = 0° to 11°C

Zone

Default = 25°C

Range = 10 to 55°C

Outdoor

Default = 32°C

Range = 10 to 55°C

[TYPE]

Return water

Default = 2,7°C

Range = 0° to 11°C

Zone

Default = -15°C

Range = 0° to 11°C

Outdoor

Default = 2,7°C

Range = 0° to 11°C

Default = Disable

Default = -3°C

Select = -7 to -1°C

Chilled water reset type [TYPE]

“Press (+) (-) to change setting”

Type of chilled water reset selected above

Return water

Zone

Outdoor air Disable

[TYPE] type, reset ratio XXX %

”Press (+) (-) to change setting”

[TYPE] type, start reset setpoint XXX C

“Press (+) (-) to change setting”

[TYPE] type, max reset setpoint

“Press (+) (-) to change setting”

Ice machine control [Disable/Enable]

“Press (+) (-) to change setting”

Panel ice termination setpoint XXX F

“Press (+) (-) to change setting”

* If the keypad is locked and a diagnostic occurs,

the alarm light will flash if applicable but the

diagnostic screen will not be displayed until the

keypad is unlocked.

** Once the keypad is locked the “PREVIOUS” and

“ENTER” key need to be pressed simultaneously

to unlock the keypad.

Default = Disable

The optional under/over voltage transformer is

needed for this feature.

Default = 460

Selections = 200, 220, 230, 346, 380, 415, 460, 500,

575.

Default = 120 seconds

select = 30 to 120 seconds

The time period between power-up or stop and the

initiation of the compressor start sequence, when

there is a call for cooling.

Default = Disable

[UNITS]

English

[LANGUAGE]

English / Français / Espanol / Nippon / Italiano /

Deutsch / Nederlands

Default = 1

Select = 1 to 12

Default = Disable

Service settings

Service

settings

Service settings, enable and units

“Press (Next) (Previous) to continue”

Status of keypad/display lock feature

(Service setting menu)

Enable Disable

“Press (Enter) to lock display and keypad”

password will be required to unlock

Depress either Enter or Next

Enter

***DISPLAY AND KEYPAD ARE LOCKED ***

*** ENTER PASSWORD TO UNLOCK ***

** Previous Enter

Display will return to

“Chiller operating mode”

under chiller report

Under/Over voltage protection [Disable/Enable]

“Press (+) (-) to change setting”

Unit line voltage [VOLT] V

“Press (+) (-) to change setting”

Restart inhibit time XXX SEC

“Press (+) (-) to change setting”

Balanced compressor start and hours [Disable/Enable]

“Press (+) (-) to change setting”

Display units [UNITS]

“Press (+) (-) to change setting”

Language [LANGUAGE]

“Press (+) (-) to change setting”

** Programmable relay setup XX

“Press (+) (-) to change setting”

External circuit lockout [Disable/Enable]

“Press (+) (-) to change setting”

*** Password required for further access

“Please enter password”

Service tests: pumpdown, electronic expansion valve,

compressor, lockout

“Press (Next) (Previous) to continue”

Service pumpdown, compressor A [Disable/Enable]

“Press (+) (-) to change setting”

Is there a compressor B ?

Yes No

Service pumpdown, compressor B [Disable/Enable]

“Press (+) (-) to change setting”

Is there a compressor C ?

Yes No

Service pumpdown, compressor C [Disable/Enable]

“Press (+) (-) to change setting”

Is there a compressor D ?

Yes No

Service pumpdown, compressor D [Disable/Enable]

“Press (+) (-) to change setting”

Electronic expansion valve test, circuit 1

“Press (+) (-) to change setting”

Electronic expansion valve test, circuit 2

“Press (+) (-) to change setting”

Compressor test, compressor A [Disable/Enable]

“Press (+) (-) to change setting”

Is there a compressor B ?

Yes No

Compressor test, compressor B [Disable/Enable]

“Press (+) (-) to change setting”

Is there a compressor C ?

Yes No

Compressor test, compressor C [Disable/Enable]

“Press (+) (-) to change setting”

Default = Disable

Must be manually enabled by sevice personnel

from the UCM. The unit must be in STOP/RESET

and can be performed only once for every power-

up of the UCM. Restart inhibit will be prepositioned

and the compressor selected will start and run for

one minute. Manual closing of the liquid line angle

valve will be required.

Default = Disable

Electronic expansion valve test will be initiated

when the unit is in STOP/RESET and Electronic

expansion valve test is set to enable. The mode will

automatically be reset to disable upon completion

of the test.

Default = Disable

Allows service personnel to override the lead/lag

function and start the compressor of concern. After

the compressor starts, the display will

automatically return to “D.”

Default = Disable

Service tests

Service

tests

Is there a compressor D ?

Yes No

Compressor test, compressor D [Disable/Enable]

“Press (+) (-) to change setting”

Circuit lockout, circuit 1 [UNLOCK/LOCKOUT]

“Press (+) (-) to change setting”

Circuit lockout, circuit 2 [UNLOCK/LOCKOUT]

“Press (+) (-) to change setting”

Default = Disable

Default = UNLOCK

If the setting is changed to “LOCKOUT,” the circuit

will become non-operational. The setting must be

manually changed to “UNLOCK” to regain

operation of the circuit.

Default = UNLOCK

If there are no diagnostic messages, the selected menu

item will be displayed continuously. If the diagnostics

key is pressed and there are no active diagnostics, the

readout on the display will be:

NO ACTIVE DIAGNOSTICS PRESENT

When a system malfunction occurs, one of the

following appropriate diagnostic messages will be

displayed:

*** A machine shutdown has occurred ! ***

A machine shutdown occurred

but has cleared “press (Next)”

*** A circuit shutdown has occurred ! ***

A circuit shutdown occurred

but has cleared “press (Next)”

*** Informational warning ***

An informational warning occurred

but has cleared “press (Next)”

When a circuit shutdown - manual reset (CMR) or a

machine shutdown - manual reset (MMR) occurs, the

red LED to the right of the display will flash. Otherwise

this alarm LED is de-energized.

If more than one diagnostic is present, only the highest

priority active diagnostic will be explained in detail. For

example, if the diagnostics occur in the following order

before the operator returns - IFW, MMR, CMR - the

display will read:

*** A machine shutdown has occurred ! ***

because the MMR has the highest priority. However, as

the operator moves through the diagnostic menu to the

“Last diagnostic,” the [Diagnostic description] will

show the CMR diagnostic as well as the IFW. If the

“Next” key is pressed, the display will show all the

other active and historic diagnostics.

The active diagnostic priorities, listed from highest to

lowest are:

Machine shutdown - manual reset (MMR)

Machine shutdown - automatic reset (MAR)

Circuit shutdown - manual reset (CMR)

Circuit shutdown - automatic reset (CAR)

Informational warning (IFW)

The following flowchart shows the display readouts

found under the diagnostics menu. By following the

steps shown in the flowchart, a brief description of the

diagnostic can be viewed. Use the Next key to enter the

main diagnostic menu, where the diagnostic can be

cleared.

Diagnostics

Diagnostic present

Yes

Other

Type of diagnostic

MMR/MAR Active

*** A machine shutdown has occurred ! ***

“Press (Next) for diagnostic info”

MAR

Type of machine shutdown

MMR

[Diagnostic description]

Latched fault - manual reset required

All others RTXA

Mode at fault: [OPERATING MODE]

Compressors running at fault: [A, B, C, D]

[Unit operating mode] [Operating mode]

Compressors running at fault: [A, B, C, D]

Press (Enter) to reset control

and clear all active diagnostics

Enter

Press Enter or Next

Enter

Machine will unload if loaded

and display will automatically

return to “MODE” in the chiller report

[DIAGNOSTIC DESCRIPTION]

Active fault - May clear automatically

All others RTXA

Mode at fault: [Operating mode]

Compressors running at fault: [A, B, C, D]

[Unit operating mode] [Operating mode]

Compressors running at fault: [A, B, C, D]

Other

Type of diagnostic

MAR inactive

*** A circuit shutdown has occurred ! ***

Press (Next) for diagnostic information”

Diagnostics

[Unit operating mode]

Cooling Mode

Heating Mode

Defrost Mode

Note:

MMR: Machine shutdown manual reset.

MAR: Machine shutdown automatic reset.

CMR: Circuit shutdown manual reset.

CAR: Circuit shutdown automatic reset.

IFW: Informational warning.

Other

Type of diagnostic

CMR/ CAR active

Latched fault - manual reset required

“Press (Next) for more”

CAR

Type of circuit shutdown

CMR

Latched fault - manual reset required

“Press (Next) for more”

Circuit 2

Did diagnostic occur

on Circuit 1 or Circuit 2?

Circuit 1

Press (Enter) to

reset circuit 1 diagnostics

Enter

Reset Circuit 1 diagnostic

Press (Enter) to

reset circuit 2 diagnostics

Enter

Reset Circuit 2 diagnostic

Active fault - can clear automatically

“Press (Next) for more”

Other

Type of diagnostic

CAR inactive

A circuit shutdown occurred

but has cleared “Press (Next)”

IFW inactive

Type of diagnostic

IFW active

*** Informational warning ***

“Press (Next) for diagnostic info”

Note:

MMR: Machine shutdown manual reset.

MAR: Machine shutdown automatic reset.

CMR: Circuit shutdown manual reset.

CAR: Circuit shutdown automatic reset.

IFW: Informational warning.

An informational warning occurred

but has cleared “Press (Next)”

No active diagnostics present

“Press (Next) (Previous) to continue”

Are there diagnostics

in history ?

Yes

Diagnostic status report follows

“Press (Next) (Previous) to continue”

Last diagnostic:

[DIAGNOSTIC DESCRIPTION]

[DIAGNOSTIC TYPE]

No historic diagnostics present

“Press (Next) (Previous) to continue”

Press (Enter) to

clear diagnostic history

Press (Enter) to

reset circuit 1 diagnostics

Press (Enter) to

reset circuit 2 diagnostics

Press (Enter) to reset control

and clear all active diagnostics

Press Enter or Next

Enter

Machine will unload if loaded and

display will automatically return to

“MODE” in the chiller report.

Defaults description

Fault 87

Check External Chilled Water Setpoint: IFW - Value out of range

Fault 89

Check External Current Limit Setpoint: IFW - Value out of range

Fault 8A

Chilled Water Flow (Entering Water Temperature): MMR 1) Entering water temperature

< leaving water temperature

2) No water flow

3) Defective Evaporator sensor

Fault 8E

Evaporator Entering Water Temperature Sensor: MMR - Defective sensor

Fault 8F

Condenser Refrigerant Temperature Sensor - Circuit 1: MMR - Defective sensor

Fault 90

Condenser Refrigerant Temperature Sensor - Circuit 2: MMR - Defective sensor

Fault 93

Evaporator Refrigerant Temperature Sensor - Circuit 1: MMR - Defective sensor

Fault 94

Evaporator Refrigerant Temperature Sensor - Circuit 2: MMR - Defective sensor

Fault 9A

Condenser Entering Water Temperature Sensor: IFW - Defective sensor

Fault 9b

Condenser Leaving Water Temperature Sensor: IFW - Defective sensor

Fault A0

Zone Temperature Sensor: IFW - Defective sensor

Fault A1

Outdoor Air Temperature Sensor: IFW - Defective sensor

Fault Ab

Evaporator Leaving Water Temperature Sensor: MMR - Defective sensor

Fault b5

Low Pressure Cutout - Circuit 1: CMR - Low pressure switch open

Fault b6

Low Pressure Cutout - Circuit 2: CMR - Low pressure switch open

Fault bA

Overload trip - Compressor A: CMR - Current exceeded

Fault bb

Overload Trip - Compressor B: CMR - Current exceeded

Fault bC

Overload trip - Compressor C: CMR - Current exceeded

Fault bd

Overload trip - Compressor D: CMR - Current exceeded

Fault bE

High Pressure Cutout - Compressor C: CMR - High pressure too high

Fault bF

High Pressure Cutout - Compressor D: CMR - High pressure too high

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Trane ADAPTIVE CONTROL UCM-CLD Installation Operation & Maintenance

Trane ADAPTIVE CONTROL UCM-CLD Installation Operation & Maintenance

Trane ADAPTIVE CONTROL UCM-CLD Installation Operation & Maintenance

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