Carrier 30GTN - Alarm and Alert Codes

Table 27 — Alarm and Alert Codes
ALARM/
ALERT
CODE
ALARM
OR
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).
48