Alarm And Alert Codes - Carrier 30GTN Service And Troubleshooting Manual

ALARM/ ALARM
ALERT OR DESCRIPTION
CODE ALERT
51 Alert Circuit A, Compressor 1
Failure
52 Alert Circuit A, Compressor 2
Failure
53 Alert Circuit A, Compressor 3
Failure
54 Alert Circuit A, Compressor 4
Failure
55 Alert Circuit B, Compressor 1
Failure
56 Alert Circuit B, Compressor 2
Failure
57 Alert Circuit B, Compressor 3
Failure
60 Alarm Cooler Leaving Fluid
Thermistor Failure (T1)
61 Alarm Cooler Entering Fluid
Thermistor Failure (T2)
64 Alert Circuit A Saturated Con-
densing Thermistor Fail-
ure (T3)
65 Alert Circuit B Saturated Con-
densing Thermistor Fail-
ure (T4)
66 Alert Circuit A Saturated Suc-
tion Thermistor Failure
(T5)
67 Alert Circuit B Saturated Suc-
tion Thermistor Failure
(T6)
68 Alert Compressor A1 Suction
Gas Thermistor Failure
(T7)
69 Alert Compressor B1 Suction
Gas Thermistor Failure
(T8)
73 Alert Outside Air Thermistor
Failure (T9)
74 Alert Space Temperature
Thermistor Failure (T10)
77 Alert Circuit A Saturated
Suction Temperature
exceeds Cooler Leaving
Fluid Temperature
78 Alert Circuit B Saturated
Suction Temperature
exceeds Cooler Leaving
Fluid Temperature
Table 27 — Alarm and Alert Codes
WHY WAS THIS
ALARM
GENERATED?
Compressor feedback Circuit A shut down.
signal does not match
relay state
Compressor feedback Circuit A shut down.
signal does not match Circuit restarted in 1
relay state minute. Compressor
A2 not used until alarm
is reset.
Compressor feedback Circuit A shut down.
signal does not match Circuit restarted in 1
relay state minute. Compressor
A3 not used until alarm
is reset.
Compressor feedback Circuit A shut down.
signal does not match Circuit restarted in 1
relay state minute. Compressor
A4 not used until alarm
is reset.
Compressor feedback Circuit B shut down.
signal does not match
relay state
Compressor feedback Circuit B shut down.
signal does not match Circuit restarted in 1
relay state minute. Compressor
B2 not used until alarm
is reset.
Compressor feedback Circuit B shut down.
signal does not match Circuit restarted in 1
relay state minute. Compressor
B3 not used until alarm
is reset.
Thermistor outside Chiller shutdown after
range of −40 to 245 F pumpdown complete.
(−40 to 118 C)
Thermistor outside Chiller shutdown after
range of −40 to 245 F pumpdown complete.
(−40 to 118 C)
Thermistor outside Circuit A shutdown
range of −40 to 245 F after pumpdown com-
(−40 to 118 C) plete. (EXV only)
Thermistor outside Circuit B shutdown
range of −40 to 245 F after pumpdown
(−40 to 118 C) complete.
Thermistor outside Circuit A shutdown
range of −40 to 245 F after pumpdown com-
(−40 to 118 C) plete. (EXV only)
Thermistor outside Circuit B shutdown
range of −40 to 245 F after pumpdown
(−40 to 118 C) complete.
Thermistor outside Circuit A shutdown
range of −40 to 245 F after pumpdown com-
(−40 to 118 C) plete. (EXV only).
Thermistor outside Circuit B shutdown
range of −40 to 245 F after pumpdown com-
(−40 to 118 C) plete. (EXV only).
Thermistor outside Temperature reset dis-
range of −40 to 245 F abled. Chiller runs un-
(−40 to 118 C) der normal control/set
points.
Thermistor outside Temperature reset dis-
range of −40 to 245 F abled. Chiller runs un-
(−40 to 118 C) der normal control/set
points.
Saturated suction is Circuit A shutdown
greater than leaving after pumpdown
fluid temperature for complete.
more than 5 minutes
Saturated suction is Circuit B shutdown
greater than leaving after pumpdown
fluid temperature for complete
more than 5 minutes
48
ACTION TAKEN RESET
BY CONTROL METHOD
Manual
Manual
Manual
Manual
Manual
Manual
Manual
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
PROBABLE
CAUSE
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.
High-pressure switch open,
faulty control relay or CPCS
board, loss of condenser
air, liquid valve closed, op-
eration beyond capability.
High-pressure switch open,
faulty control relay or CPCS
board, loss of condenser
air, liquid valve closed, op-
eration beyond capability.
High-pressure switch open,
faulty control relay or CPCS
board, loss of condenser
air, liquid valve closed, op-
eration beyond capability.
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.
High-pressure switch open,
faulty control relay or CPCS
board, loss of condenser
air, liquid valve closed, op-
eration beyond capability.
High-pressure switch open,
faulty control relay or CPCS
board, loss of condenser
air, liquid valve closed, op-
eration beyond capability.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
Faulty expansion valve or
EXV board, faulty cooler
suction thermistor (T5) or
leaving fluid thermistor (T1).
Faulty expansion valve or
EXV board, faulty cooler
suction thermistor (T6) or
leaving fluid thermistor (T1).