Carrier WEATHERMAKER 48J

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ALARM OR

ALERT

NUMBER

A051

P051

T051

A052

P052

T052

A055

P055

T055

A056

P056

T056

T064

T065

T072

T073

T074

T075

T076

T078

T082

T090

T091

T092

T093

Tl10

Tlll

A120

P120

T120

A121

P121

T121

T122

T123

T126

T127

A140

A150

T153

A154

T155

A156

A157

A171

A172

A173

A174

T177

T178

A200

T210

T211

T220

T221

T229

Table 114 -- Alert and Alarm Codes

DESCRIPTION

Circuit A, Compressor 1 Stuck On Failure

Circuit A, Compressor 1 Failure

Circuit A, Compressor 2 Stuck On Failure

Circuit A, Compressor 2 Failure

Circuit B, Compressor 1 Stuck On Failure

Circuit B, Compressor 1 Failure

Circuit B, Compressor 2 Stuck On Failure

Circuit B, Compressor 2 Failure

Circuit A Saturated Condensing Thermistor Failure

(48/50AJ,AK,AW,AY units only)

Circuit B Saturated Condensing Thermistor Failure

(48/50AJ,AK,AW,AY units only)

Evaporator Discharge Reset Sensor Failure

Outside Air Temperature Thermistor Failure

Space Temperature Thermistor Failure

Return Air Thermistor Failure

Outside Air Relative Humidity Sensor Failure

Return Air Relative Humidity Sensor Failure

Space Temperature Offset Sensor Failure

Circuit A Discharge Pressure Transducer Failure

Circuit B Discharge Pressure Transducer Failure

Circuit A Suction Pressure Transducer Failure

Circuit B Suction Pressure Transducer Failure

Circuit A Loss of Charge

Circuit B Loss of Charge

Circuit A Low Saturated Suction Temperature Alarm.

Circuit A Low Saturated Suction Temp-Comp A2 Shutdown

Circuit A Low Saturated Suction Temperature Alert.

Circuit B Low Saturated Suction Temperature Alarm.

Circuit B Low Saturated Suction Temp-Comp B2 Shutdown

Circuit B Low Saturated Suction Temperature Alert.

ACTION TAKEN BY CONTROL

RESET PROBABLE CAUSE

METHOD

Turn off all compressors Manual

Automatic

Add strike to compressor (max 3)

Compressor locked off Manual

Turn off all compressors Manual

Automatic

Add strike to compressor (max 3)

Compressor locked off Manual

Turn off all compressors Manual

Automatic

Add strike to compressor (max 3)

Compressor locked off Manual

Turn off all compressors Manual

Automatic

Add strike to compressor (max 3)

Compressor locked off Manual

Use OAT for head pressure control

Welded contact

High pressure switch, compressor

current, wiring error

Exceeded 3 strike limit

Welded contact

High pressure switch, compressor

current, wiring error

Exceeded 3 strike limit

Welded contact

High pressure switch, compressor

current, wiring error

Exceeded 3 strike limit

Welded contact

High pressure switch, compressor

current, wiring error

Exceeded 3 strike limit

Automatic Faulty thermistor or wiring error

Use OAT for head pressure control Automatic

Unit shutdown Automatic

Stop use of economizer Automatic

Unit shutdown Automatic

Continue to run unit Automatic

Use OAT changeover control Automatic

Use differential dry bulb changeover Automatic

Use Space temperature without offset Automatic

Stop circuit Automatic

Stop circuit Manual

Compressor A2 shutdown Automatic

Stop circuit Automatic

Stop circuit Manual

Compressor B2 shutdown Automatic

Circuit A High Saturated Suction Temperature

Circuit B High Saturated Suction Temperature

Circuit A High Head Pressure Stop

circuit Automatic

circuit Manual

circuit Automatic

Stop

Stop circuit Automatic

Stop unit Manual

Stop gas heat Automatic

Stop options on CEM Automatic

Stop economizer & power exh Automatic

Stop unit Automatic

Stop demand limiting Automatic

Stop static pressure reset/VFD Automatic

Stop unit Manual

Close economizer, stop exhaust Automatic

Stop unit Automatic

Stop IAQ control Automatic

Use a default value for IAQ Automatic

Use software configured

minimum Automatic

Circuit B High Head Pressure

Reverse Rotation Detected

Unit is in Emergency Stop

Real Time Clock Hardware Failure

Serial EEPROM Hardware Failure

Serial EEPROM Storage Failure Error

Critical Serial EEPROM Storage Failure Error

A/D Hardware Failure

Staged Gas Control Board Comm Failure

Controls Expansion Module Comm Failure

ECB1 Board Communication Failure

ECB2 Board Communication Failure

4-20 MA Demand Limit Failure

4-20 MA Static Pressure ResetNFD Fail

Linkage Timeout Error - Communication Failure

Building Pressure Transducer Failure

Static Pressure Transducer Failure

Indoor Air Quality Sensor Failure

Outdoor Air Quality Sensor Failure

Economizer Minimum Position Override Input Failure

Faulty thermistor or wiring error

Faulty remote input on CEM board

Faulty thermistor or wiring error

Faulty sensor or wiring error

Faulty sensor, wiring error

Low refrigerant charge

Low refrigerant charge, low airflow,