Alarm And Alert Codes - Carrier AQUASNAP AIR COOLED CHILLERS WITH COMFORTLINK CONTROLS 30RAP010-060 Operation And Service Manual

ALARM/ ALARM
ALERT OR DESCRIPTION
CODE ALERT
Circuit A, Compressor 1
T051 Alert
Failure
Circuit A, Compressor 1
A051 Alarm
Failure
Circuit A, Compressor 2
T052 Alert
Failure
Circuit A, Compressor 2
A052 Alarm
Failure
Circuit B, Compressor 1
T055 Alert
Failure
Circuit B, Compressor 1
A055 Alarm
Failure
Circuit B, Compressor 2
T056 Alert
Failure
Circuit B, Compressor 2
A056 Alarm
Failure
Cooler Leaving Fluid
A060 Alarm
Thermistor Failure
Cooler Entering Fluid
A061 Alarm
Thermistor Failure
T068 None Circuit A Return Gas Thermistor Failure
T069 None Circuit B Return Gas Thermistor Failure
Outside Air Thermistor
T073 Alert
Failure
Space Temperature/Dual Chiller
T074 Alert
Thermistor Failure
Circuit A Saturated
Suction Temperature
T077 Alert
exceeds Cooler Leaving
Fluid Temperature
Circuit B Saturated
Suction Temperature
T078 Alert
exceeds Cooler Leaving
Fluid Temperature
Lead/Lag LWT
T079 Alert
Thermistor Failure
Circuit A Discharge
T090 Alert
Pressure Transducer Failure
Circuit B Discharge
T091 Alert
Pressure Transducer Failure
Circuit A Suction
T092 Alert
Pressure Transducer Failure
Circuit B Suction
T093 Alert Pressure Transducer
Failure
Discharge Gas
T094 Alert
Thermistor Failure
Table 42 — Alarm and Alert Codes
WHY WAS THIS
ALARM
GENERATED?
Compressor feedback signal
does not match relay state
Respective current sensor
board (CSB) feedback signal
is ON when the compressor
should be off
Compressor feedback signal
does not match relay state
Respective current sensor
board (CSB) feedback signal
is ON when the compressor
should be off
Compressor feedback signal
does not match relay state
Respective current sensor
board (CSB) feedback signal
is ON when the compressor
should be off
Compressor feedback signal
does not match relay state
Respective current sensor
board (CSB) feedback signal
is ON when the compressor
should be off
Thermistor outside range of
–40 to 245 F (–40 to 118 C)
Thermistor outside range of
–40 to 245 F (–40 to 118 C)
If return gas sensors are
enabled (RG.EN) and
thermistor is outside range of
–40 to 245 F (–40 to 118 C)
If return gas sensors are
enabled (RG.EN) and
thermistor is outside range of
–40 to 245 F –40 to 118 C)
Thermistor outside range of
–40 to 245 F (–40 to 118 C)
Thermistor outside range of
–40 to 245 F (–40 to 118 C)
Faulty expansion valve,
suction pressure transducer
or leaving fluid thermistor.
Faulty expansion valve,
suction pressure transducer
or leaving fluid thermistor.
Thermistor outside range of
–40 to 245 F (–40 to 118 C)
Outside of range (0 to
667 psig)
Outside of range (0 to
667 psig)
Outside of range (0 to 420
psig)
Outside of range (0 to
420 psig)
Discharge thermistor (DTT) is
either open or shorted
67
ACTION TAKEN RESET
BY CONTROL METHOD
Compressor A1 shut
Manual
down.
Unit shut down Manual
Compressor A2 shut
Manual
down.
Unit shut down Manual
Compressor B1 shut
Manual
down.
Unit shut down Manual
Compressor B2 shut
Manual
down.
Unit shut down Manual
Chiller shut down
Automatic
immediately
Chiller shut down Automatic Thermistor failure, damaged
immediately
Circuit A shut down Automatic
Circuit B shut down Automatic
Temperature reset
disabled. Chiller runs
under normal control/set
Automatic
points. When capacity
reaches 0, cooler/pump
heaters are energized.
Temperature reset
disabled. Chiller runs
Automatic
under normal control/set
points.
Circuit A shutdown after
Automatic
pumpdown complete.
Circuit B shutdown after
Automatic
pumpdown complete
Chiller runs as a stand
Automatic
alone machine
Circuit A shut down Automatic
Circuit B shut down Automatic
Circuit A shut down Automatic
Circuit B shut down Automatic
Digital compressor shut
Automatic
down.
PROBABLE
CAUSE
High-pressure switch open,
faulty CSB, loss of condenser
air, filter drier plugged, non-
condensables, operation
beyond capability.
Welded compressor contac-
tor, CSB wiring error.
High-pressure switch open,
faulty CSB, loss of condenser
air, filter drier plugged, non-
condensables, operation
beyond capability.
Welded compressor contac-
tor, CSB wiring error.
High-pressure switch open,
faulty CSB, loss of condenser
air, filter drier plugged, non-
condensables, operation
beyond capability.
Welded compressor contac-
tor, CSB wiring error.
High-pressure switch open,
faulty CSB, loss of condenser
air, filter drier plugged, non-
condensables, operation
beyond capability.
Welded compressor contac-
tor, CSB wiring error.
Thermistor failure, damaged
cable/wire or wiring error.
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
suction pressure transducer
or leaving fluid
thermistor.
Faulty expansion valve or
suction pressure transducer
or leaving fluid
thermistor.
Dual LWT thermistor failure,
damaged cable/wire or
wiring error.
Transducer failure, poor
connection to MBB, or wiring
damage/error.
Transducer failure, poor
connection to MBB, or wiring
damage/error.
Transducer failure, poor
connection to MBB, or wiring
damage/error.
Transducer failure, poor
connection to MBB, or wiring
damage/error.
Thermistor failure, damaged
cable/wire or wiring error.