Carrier 30GTR Specifications download pdf (Page 48)

Table 27 — Alarm and Alert Codes

ALARM/

ALERT

CODE

ALARM

ALERT

DESCRIPTION

WHY WAS THIS

ALARM

GENERATED?

ACTION TAKEN

BY CONTROL

RESET

METHOD

PROBABLE

CAUSE

51 Alert Circuit A, Compressor 1

Failure

Compressor feedback

signal does not match

relay state

Circuit A shut down. Manual High-pressure or loss-of-

charge switch open, faulty

control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

52 Alert Circuit A, Compressor 2

Failure

Compressor feedback

signal does not match

relay state

Circuit A shut down.

Circuit restarted in 1

minute. Compressor

A2 not used until alarm

is reset.

Manual High-pressure switch open,

faulty control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

53 Alert Circuit A, Compressor 3

Failure

Compressor feedback

signal does not match

relay state

Circuit A shut down.

Circuit restarted in 1

minute. Compressor

A3 not used until alarm

is reset.

Manual High-pressure switch open,

faulty control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

54 Alert Circuit A, Compressor 4

Failure

Compressor feedback

signal does not match

relay state

Circuit A shut down.

Circuit restarted in 1

minute. Compressor

A4 not used until alarm

is reset.

Manual High-pressure switch open,

faulty control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

55 Alert Circuit B, Compressor 1

Failure

Compressor feedback

signal does not match

relay state

Circuit B shut down. Manual High-pressure or loss-of-

charge switch open, faulty

control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

56 Alert Circuit B, Compressor 2

Failure

Compressor feedback

signal does not match

relay state

Circuit B shut down.

Circuit restarted in 1

minute. Compressor

B2 not used until alarm

is reset.

Manual High-pressure switch open,

faulty control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

57 Alert Circuit B, Compressor 3

Failure

Compressor feedback

signal does not match

relay state

Circuit B shut down.

Circuit restarted in 1

minute. Compressor

B3 not used until alarm

is reset.

Manual High-pressure switch open,

faulty control relay or CPCS

board, loss of condenser

air, liquid valve closed, op-

eration beyond capability.

60 Alarm Cooler Leaving Fluid

Thermistor Failure (T1)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Chiller shutdown after

pumpdown complete.

Automatic Thermistor failure, damaged

cable/wire or wiring error.

61 Alarm Cooler Entering Fluid

Thermistor Failure (T2)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Chiller shutdown after

pumpdown complete.

Automatic Thermistor failure, damaged

cable/wire or wiring error.

64 Alert Circuit A Saturated Con-

densing Thermistor Fail-

ure (T3)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Circuit A shutdown

after pumpdown com-

plete. (EXV only)

Automatic Thermistor failure, damaged

cable/wire or wiring error.

65 Alert Circuit B Saturated Con-

densing Thermistor Fail-

ure (T4)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Circuit B shutdown

after pumpdown

complete.

Automatic Thermistor failure, damaged

cable/wire or wiring error.

66 Alert Circuit A Saturated Suc-

tion Thermistor Failure

(T5)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Circuit A shutdown

after pumpdown com-

plete. (EXV only)

Automatic Thermistor failure, damaged

cable/wire or wiring error.

67 Alert Circuit B Saturated Suc-

tion Thermistor Failure

(T6)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Circuit B shutdown

after pumpdown

complete.

Automatic Thermistor failure, damaged

cable/wire or wiring error.

68 Alert Compressor A1 Suction

Gas Thermistor Failure

(T7)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Circuit A shutdown

after pumpdown com-

plete. (EXV only).

Automatic Thermistor failure, damaged

cable/wire or wiring error.

69 Alert Compressor B1 Suction

Gas Thermistor Failure

(T8)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Circuit B shutdown

after pumpdown com-

plete. (EXV only).

Automatic Thermistor failure, damaged

cable/wire or wiring error.

73 Alert Outside Air Thermistor

Failure (T9)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Temperature reset dis-

abled. Chiller runs un-

der normal control/set

points.

Automatic Thermistor failure, damaged

cable/wire or wiring error.

74 Alert Space Temperature

Thermistor Failure (T10)

Thermistor outside

range of −40 to 245 F

(−40 to 118 C)

Temperature reset dis-

abled. Chiller runs un-

der normal control/set

points.

Automatic Thermistor failure, damaged

cable/wire or wiring error.

77 Alert Circuit A Saturated

Suction Temperature

exceeds Cooler Leaving

Fluid Temperature

Saturated suction is

greater than leaving

ﬂuid temperature for

more than 5 minutes

Circuit A shutdown

after pumpdown

complete.

Automatic Faulty expansion valve or

EXV board, faulty cooler

suction thermistor (T5) or

leaving ﬂuid thermistor (T1).

78 Alert Circuit B Saturated

Suction Temperature

exceeds Cooler Leaving

Fluid Temperature

Saturated suction is

greater than leaving

ﬂuid temperature for

more than 5 minutes

Circuit B shutdown

after pumpdown

complete

Automatic Faulty expansion valve or

EXV board, faulty cooler

suction thermistor (T6) or

leaving ﬂuid thermistor (T1).

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