Table 49 — Alarm Codes (cont)

PREFIX

SUFFIX

ALARM

ALARM DESCRIPTION

REASON FOR ALARM

 

ACTION TAKEN

RESET

PROBABLE CAUSE

CODE

CODE

NUMBER

 

BY CONTROL

TYPE

 

 

 

 

 

 

A1, B1

10

132-10,

Compressor Y delta starter

If the delta mode current

 

Circuit shut down

Manual

Power supply to delta

 

 

 

133-10

current increase failure alarm

is not 25% greater than

 

 

 

contactor not

 

 

 

 

 

 

 

the current in Y mode

 

 

 

connected, faulty delta

 

 

 

 

 

 

 

 

 

 

 

contactor or wiring,

 

 

 

 

 

 

 

 

 

 

 

faulty CPM board

 

 

11

132-11,

Compressor Contactor failure

CPM board detects

 

Circuit shut down

Manual

Faulty contactor, con-

 

 

 

133-11

 

 

 

greater than 15% of MTA

 

 

 

tactor welded, wiring

 

 

 

 

 

 

 

current for 10 seconds

 

 

 

error

 

 

 

 

 

 

 

after shutting off the com-

 

 

 

 

 

 

 

 

 

 

 

pressor contactor. Oil

 

 

 

 

 

 

 

 

 

 

 

solenoid is energized.

 

 

 

 

 

 

12

132-12,

Compressor Unable to stop

CPM board detects

 

Circuit shut down

Manual

Faulty contactor,

 

 

 

133-12

motor

 

 

greater than 15% of MTA

 

 

 

contactor welded,

 

 

 

 

 

 

 

current for 10 seconds

 

 

 

wiring error

 

 

 

 

 

 

 

after three attempts

 

 

 

 

 

 

13

132-13,

Compressor Phase reversal

CPM board detects phase

 

Circuit shut down

Manual

Terminal block power

 

 

 

133-13

 

 

 

reversal from current

 

 

 

supply lead not in

 

 

 

 

 

 

 

toroid

 

 

 

correct phase. Power

 

 

 

 

 

 

 

 

 

 

 

supply leads going

 

 

 

 

 

 

 

 

 

 

 

through toroid crossed

 

 

14

132-14,

Compressor MTA configura-

MTA setting is out of the

 

Circuit shut down

Manual

Incorrect MTA setting,

 

 

 

133-14

tion fault

 

 

allowed MTA range

 

 

 

faulty CPM board

 

 

15

132-15,

Compressor Configuration

CPM board MTA setting

 

Circuit shut down

Manual

Incorrect CPM dip-

 

 

 

133-15

switch mismatch

 

do not match factory

 

 

 

switch setting,

 

 

 

 

 

 

 

configuration

 

 

 

incorrect factory MTA

 

 

 

 

 

 

 

 

 

 

 

setting, faulty CPM

 

 

 

 

 

 

 

 

 

 

 

board

 

 

16

132-16,

Compressor Unexpected

CPM board dipswitch S1

 

Circuit shut down

Manual

Incorrect CPM dip-

 

 

 

133-16

switch setting change

 

setting changed

 

 

 

switch setting, faulty

 

 

 

 

 

 

 

 

 

 

 

CPM board

 

 

17

132-17,

Compressor Power on reset

CPM board detects a

 

Circuit shut down

Manual

Power supply

 

 

 

133-17

 

 

 

power failure

 

 

 

interruption

 

 

18

132-18,

Compressor UL 1998 critical

Software error

 

Circuit shut down

Manual

Electric noise, faulty

 

 

 

133-18

section software error

 

 

 

 

 

CPM board

 

 

19

132-19,

Compressor UL 1998 current

Software error

 

Circuit shut down

Manual

Electric noise, faulty

 

 

 

133-19

measure dual channel

 

 

 

 

 

CPM board

 

 

 

 

mismatch

 

 

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

CCN

Carrier Comfort Network®

MLV

Minimum Load Valve

 

 

 

CPM

Compressor Protection Module

MOP

Maximum Operating Pressure

 

 

 

EMM

Energy Management Module

MTA

Must Trip Amps

 

 

 

EWT

Entering Water Temperature

SST

Saturated Suction Temperature

 

 

 

EXV

Electronic Expansion Valve

UL

Underwriters Laboratories

 

 

 

HPS

High Pressure Switch

 

 

 

 

 

 

 

 

DIAGNOSTIC ALARM CODES AND POSSIBLE CAUSES

Thermistor Failure

Alarm 1 — Cooler Fluid Entering (th.01)

Alarm 2 — Cooler Fluid Leaving (th.02)

Criteria for Trip — This alarm criterion is tested whether the unit is on or off if the temperature as measured by the thermis- tor is outside of the range –40 to 245 F (–40 to 118.3 C).

Action to be Taken — The unit shuts down normally, or is not allowed to start.

Reset Method — Automatic, the alarm will reset once the thermistor reading is within the expected range.

Possible Causes — If this condition is encountered, check the following items:

sensor wiring to the Main Base Board

sensor accuracy

See the Thermistors section on page 56 for thermistor de- scription, identifiers and connections.

Defrost Thermistor Failure

Alarm 3 — Circuit A (th.03)

Alarm 4 — Circuit B (th.04)

NOTE: Alarms 3 and 4 are not used or supported. If this condi- tion is encountered, confirm machine configuration.

Thermistor Failure

Alarm 5 — Condenser Entering Fluid (th.06)

Alarm 6 — Condenser Leaving Fluid (th.07)

NOTE: Alarms 5 and 6 are not used or supported. If this condi- tion is encountered, confirm machine configuration.

Condenser Reclaim Thermistor

Alarm 7— Reclaim Entering Fluid (th.08)

Alarm 8 — Reclaim Leaving Fluid (th.09)

NOTE: Alarms 7 and 8 are not used or supported. If this condi- tion is encountered, confirm machine configuration.

73

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Carrier 30XW150-400 specifications Error

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