Carrier 48/50PM C16-28 manual ComfortLinkt Alarm Codes, 48/50PG and PM, See Legend on next page

Models: 48/50PM C16-28 48/50PG C03-14

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Table 12 – ComfortLinkt Alarm Codes

Table 12 – ComfortLinkt Alarm Codes

ALARM

 

OR

DESCRIPTION

ALERT

 

NUMBER

 

 

Compressor A1 Safety Trip

 

Service Test - Compressor A1 Safety Trip

T051

Compressor A1 Current Detected After Turnoff

 

Service Test - Compressor A1 Current Detected

 

After Turnoff

 

Compressor A2 Safety Trip

 

Service Test - Compressor A2 Safety Trip

T052

Compressor A2 Current Detect After Turnoff

 

Service Test - Compressor A2 Current Detected

 

After Turnoff

 

Compressor B1 Safety Trip

 

Service Test - Compressor B1 Safety Trip

T055

Compressor B1 Current Detect After Turnoff

 

Service Test - Compressor B1 Current Detected

 

After Turnoff

 

Compressor C1 Safety Trip

 

Service Test - Compressor C1 Safety Trip

T059

Compressor C1 Current Detect After Turnoff

 

Service Test - Compressor C1 Current Detected

 

After Turnoff

T064

Circuit A Saturated Condensing Temp Thermistor

Failure

 

T065

Circuit B Saturated Condensing Temp Thermistor

Failure

 

T066

Circuit A Saturated Suction Temperature

Thermistor Failure

 

T067

Circuit B Saturated Suction Temperature

Thermistor Failure

 

T073

Outdoor Air Temperature Thermistor Failure

T074

Space Temperature Thermistor Failure

T075

Supply Air Temperature Thermistor Failure

T076

Return Air Thermistor Failure

T077

Space Relative Humidity Sensor Failure

T080

Circuit C Saturated Condensing Temp Thermistor

Failure

 

T081

Circuit C Saturated Suction Temperature

Thermistor Failure

 

T092

Circuit A Suction Pressure Transducer Failure

T093

Circuit B Suction Pressure Transducer Failure

T101

Circuit C Suction Pressure Transducer Failure

T102

Compressor A1 Current Sensor Failure

 

Compressor A2 Current Sensor Failure

T103

Compressor B1 Current Sensor Failure

T104

Compressor C1 Current Sensor Failure

T110

Circuit A Loss of Charge

Service Test - Circuit A Loss of Charge

 

T111

Circuit B Loss of Charge

Service Test - Circuit B Loss of Charge

 

T126

Circuit A High Discharge Pressure

Service Test - Circuit A High Discharge Pressure

 

T127

Circuit B High Discharge Pressure

Service Test - Circuit B High Discharge Pressure

 

 

Circuit A Low Refrigerant Pressure

T133

 

 

Service Test - Circuit A Low Refrigerant Pressure

 

Circuit B Low Refrigerant Pressure

T134

 

 

Service Test - Circuit B Low Refrigerant Pressure

T140

Circuit C Loss of Charge

Service Test - Circuit C Loss of Charge

 

 

Circuit C Low Refrigerant Pressure

T141

 

 

Service Test - Circuit C Low Refrigerant Pressure

T142

Circuit C High Discharge Pressure

Service Test - Circuit C High Discharge Pressure

 

T143

Circuit A Failure To Pressurize

Service Test - Circuit A Failure to Pressurize

 

T144

Circuit B Failure To Pressurize

Service Test - Circuit B Failure to Pressurize

 

T145

Circuit C Failure To Pressurize

Service Test - Circuit C Failure to Pressurize

 

T153

Real Timeclock Hardware Failure

* See Legend on next page

ACTION TAKEN BY

CONTROL

Add Strike for Circuit A

Turn off all compressors

Add Strike for Circuit A

Turn off all compressors

Add Strike for Circuit B

Turn off all compressors

Add Strike for Circuit C

Turn off all compressors

Use OAT to control Outdoor

fans

Use OAT to control Outdoor

fans

No Circuit A Cooling

No Circuit B Cooling

No cooling with economizer

If U.CTL = 3, then no

heating or cooling

No cooling with economizer and No adaptive compressor staging

If RAT.S = Yes, then no differential Dry Bulb control If RH.S = Yes, then no indoor humidity control Use OAT to control Outdoor fans

No Circuit C Cooling

Lockout Circuit A

Lockout Circuit B

Lockout Circuit C

If CS.A1 = Enable, then no

T051 current alarm

If CS.A2 = Enable, then no

T052 current alarm

If CS.B1 = Enable, then no

T055 current alarm

If CS.C1 = Enable, then no

T059 current alarm

Lockout Circuit A

Lockout Circuit B

Shutdown Circuit A

Shutdown Circuit B

Add Strike for Circuit A

Add Strike for Circuit B

Lockout Circuit C

Add Strike for Circuit C

Shutdown Circuit C

Add Strike for Circuit A

Add Strike for Circuit B

Add Strike for Circuit C

No time and date schedule

operation

RESET

PROBABLE CAUSE

METHOD

 

Automatic

High-pressure switch open. Compressor internal protection

open. Wiring error

 

Automatic

Welded contactor

Automatic

High-pressure switch open. Compressor internal protection

open. Wiring error

 

Automatic

Welded contactor

Automatic

High-pressure switch open. Compressor internal protection

open. Wiring error

 

Automatic

 

 

Welded contactor

Automatic

High-pressure switch open. Compressor internal protection

open. Wiring error

 

Automatic

Welded contactor

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Circuit A Suction transducer internally forced inactive

Automatic

Circuit B Suction transducer internally forced inactive

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Faulty, shorted, or open sensor caused by wiring error or loose

connection.

 

Automatic

Faulty, shorted, or open thermistor caused by wiring error or

loose connection.

 

Automatic

Circuit C Suction transducer internally forced inactive

Manual

Faulty transducer, faulty 5-V power supply, or loose

connection

 

Manual

Faulty transducer, faulty 5-V power supply, or loose

connection

 

Manual

Faulty transducer, faulty 5-V power supply, or loose

connection

 

Automatic

Faulty current sensor caused by wiring error or loose

connection

 

Automatic

Faulty current sensor caused by wiring error or loose

connection

 

Automatic

Faulty current sensor caused by wiring error or loose

connection

 

Automatic

Faulty current sensor caused by wiring error or loose

connection

 

Manual

Low refrigerant or faulty suction pressure transducer

Manual

Low refrigerant or faulty suction pressure transducer

 

An overcharged system, high outdoor ambient temperature

Automatic

coupled with dirty outdoor coil, plugged filter drier, or a faulty

 

high-pressure switch.

 

An overcharged system, high outdoor ambient temperature

Automatic

coupled with dirty outdoor coil, plugged filter drier, or a faulty

 

high-pressure switch.

 

Low refrigerant charge, dirty filters, evaporator fan turning

Automatic

backwards, loose or broken fan belt, plugged filter drier, faulty

transducer, excessively cold return air, or stuck open

 

 

economizer when the ambient temperature is low.

 

Low refrigerant charge, dirty filters, evaporator fan turning

Automatic

backwards, loose or broken fan belt, plugged filter drier, faulty

transducer, excessively cold return air, or stuck open

 

 

economizer when the ambient temperature is low.

Manual

Low refrigerant or faulty suction pressure transducer

 

Low refrigerant charge, dirty filters, evaporator fan turning

Automatic

backwards, loose or broken fan belt, plugged filter drier, faulty

transducer, excessively cold return air, or stuck open

 

 

economizer when the ambient temperature is low.

 

An overcharged system, high outdoor ambient temperature

Automatic

coupled with dirty outdoor coil, plugged filter drier, or a faulty

 

high-pressure switch.

Automatic

Wiring causing reverse rotation or faulty compressor

Automatic

Wiring causing reverse rotation or faulty compressor

Automatic

Wiring causing reverse rotation or faulty compressor

Automatic

No time/date configured, software failure, or MBB failure

48/50PG and PM

41

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Carrier 48/50PM C16-28, 48/50PG C03-14 manual ComfortLinkt Alarm Codes, 48/50PG and PM, See Legend on next page