Carrier ComfortLink 6 Series Controls, Start-Up, Operation, Service, And Troubleshooting page 45

ALARM/ ALARM OR
ALERT CODE ALERT
T071 Alert Cir. B Discharge Gas
Thermistor Failure
T073 Alert Outside Air Tempera-
ture Thermistor
Failure
T074 Alert Space Temperature
Thermistor Failure
T075 Alert Compressor A1
Discharge Gas
Thermistor Failure
T076 Alert Compressor A2
Discharge Gas
Thermistor Failure
T077 Alert Compressor B1
Discharge Gas
Thermistor Failure
T078 Alert Compressor B2
Discharge Gas
Thermistor Failure
T079 Alert Lead/Lag Leaving
Fluid Temperature
Thermistor Failure
T090 Alert Circuit A Discharge
Pressure Transducer
Failure
T091 Alert Circuit B Discharge
Pressure Transducer
Failure
T092 Alert Circuit A Suction
Pressure Transducer
Failure
T093 Alert Circuit B Suction
Pressure Transducer
Failure
T094 Alert Comp A1 Oil Pres-
sure Transducer
Failure
T095 Alert Comp A2 Oil Pres-
sure Transducer
Failure
T096 Alert Comp B1 Oil Pres-
sure Transducer
Failure
T097 Alert Comp B2 Oil Pres-
sure Transducer
Failure
T098 Alert Circuit A Economizer
Pressure Transducer
Failure – 1
Alert Circuit A Economizer
Pressure Transducer
Failure – 2
T099 Alert Circuit B Economizer
Pressure Transducer
Failure – 1
Alert Circuit B Economizer
Pressure Transducer
Failure – 2
T110 Alert Circuit A Loss of
Charge
T111 Alert Circuit B Loss of
Charge
Table 32  Alarm and Alert Codes (cont)
WHY WAS THIS ALARM
DESCRIPTION
GENERATED?
Average of compressor B1
and B2 (if installed)
sensors > 210° F for
30 seconds.
Thermistor outside range of
–40 to 240 F (–40 to 116 C)
Thermistor outside range of
–40 to 240 F (–40 to 116 C)
Thermistor outside range of –
40 to 240° F (–40 to 116° C)
Thermistor outside range of –
40 to 240° F (–40 to 116° C)
Thermistor outside range of –
40 to 240° F (–40 to 116° C)
Thermistor outside range of –
40 to 240° F (–40 to 116° C)
Thermistor outside range of
–40 to 240 F (–40 to 116 C)
Voltage ratio more than
98.9% or less than 6%.
Voltage ratio more than
98.9% or less than 6%.
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Voltage ratio more than
98.9% or less than 6%.
Voltage ratio more than
98.9% or less than 6%.
Voltage ratio more than
98.9% or less than 6%.
Voltage ratio more than
98.9% or less than 6%.
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Economizer pressure is more
than 12 psi (83 kPa) less than
suction pressure.
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Economizer pressure is more
than 12 psi (83 kPa) less than
suction pressure.
Discharge pressure reading
< 10 psig for 30 seconds.
Discharge pressure reading
< 10 psig for 30 seconds.
ACTION TAKEN BY
CONTROL
Circuit B shut down
Reset disabled. Runs
under normal control/
set points.
Reset disabled. Runs
under normal control/
set points.
Comp A1 shut down
Comp A2 shut down
Comp B1 shut down
Comp B2 shut down
Breaks Dual Chiller
link if set up for Paral-
lel operation.
Circuit A shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
Comp A1 shut down
Comp A2 shut down
Comp B1 shut down
Comp B2 shut down
Circuit A shut down
Circuit A shut down
Circuit B shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
45
RESET
PROBABLE CAUSE
METHOD
Manual Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or sen-
sor not installed.
Automatic Thermistor failure, damaged
cable/wire, wiring error or sen-
sor not installed.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or sen-
sor not installed.
Automatic Transducer failure, poor con-
nection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor con-
nection to SCB, or wiring
damage/error.
Manual Suction and Economizer pres-
sure connectors/wiring are
swapped.
Automatic Transducer failure, poor con-
nection to SCB, or wiring
damage/error.
Manual Suction and Economizer pres-
sure connectors/wiring are
swapped.
Manual Refrigerant leak or transducer
failure.
Manual Refrigerant leak or transducer
failure.