Carrier Weathermaster 48P030-100 Controls, Start-Up, Operation, Service, And Troubleshooting page 123

Single package large rooftop units with comfortlink version 9.x controls

Table of Contents

ALARM OR

ALERT NUMBER

CktA, Oil Return Not Reliable With Only One Comp 

T048

Available

CktB, Oil Return Not Reliable With Only One Comp 

T049

Available

T051

Circuit A, Compressor 1 Failure

A051

Circuit A, Compressor 1 Stuck On Failure

T052

Circuit A, Compressor 2 Failure

A052

Circuit A, Compressor 2 Stuck On Failure

T053

Circuit A, Compressor 3 Failure

A053

Circuit A, Compressor 3 Stuck On Failure

T054

Circuit B, Compressor 1 Failure

A054

Circuit B, Compressor 1 Stuck On Failure

T055

Circuit B, Compressor 2 Failure

A055

Circuit B, Compressor 2 Stuck On Failure

T056

Circuit B, Compressor 3 Failure

A056

Circuit B, Compressor 3 Stuck On Failure

T057

Circuit A, High Pressure Switch Failure

A057

Circuit A, High Pressure Switch Failure

T058

Circuit B, High Pressure Switch Failure

A058

Circuit B, High Pressure Switch Failure

T068

Circuit A, Return Gas Thermistor Failure

T072

Evap. Discharge Reset Sensor Failure

T073

Outside Air Temperature Thermistor Failure

T074

Space Temperature Thermistor Failure

T075

Return Air Thermistor Failure

T076

Outside Air Relative Humidity Sensor Fail

T077

Space Relative Humidity Sensor Failure

T078

Return Air Relative Humidity Sensor Fail

T082

Space Temperature Offset Sensor Failure

T090

Circ A Discharge Press Transducer Failure

T091

Circ B Discharge Press Transducer Failure

T092

Circ A Suction Press Transducer Failure

T093

Circ B Suction Press Transducer Failure

T110

Circuit A Loss of Charge

T111

Circuit B Loss of Charge

P120

Circuit A Low Saturated Suction Temp, Comp Shutdown

T120

Circuit A Low Saturated Suction Temperature Alert

A120

Circuit A Low Saturated Suction Temperature Alarm

P121

Circuit B Low Saturated Suction Temp, Comp Shutdown

T121

Circuit B Low Saturated Suction Temperature Alert

A121

Circuit B Low Saturated Suction Temperature Alarm

T122

Circuit A High Saturated Suction Temperature

T123

Circuit B High Saturated Suction Temperature

P126

Circuit A High Head Pressure, Comp Shutdown

T126

Circuit A High Head Pressure Alert

A126

Circuit A High Head Pressure Alarm

P127

Circuit B High Head Pressure, Comp Shutdown

T127

Circuit B High Head Pressure Alert

A127

Circuit B High Head Pressure Alarm

T128

Digital Scroll High Discharge Temperature Alert

A128

Digital Scroll High Discharge Temperature Alarm

A140

Reverse Rotation Detected

A150

Unit is in Emergency Stop

A152

Unit Down due to Failure

T153

Real Time Clock Hardware Failure

A154

Serial EEPROM Hardware Failure

T155

Serial EEPROM Storage Failure Error

A156

Critical Serial EEPROM Storage Fail Error

A157

A/D Hardware Failure

A169

Expansion Valve Control Board Comm Failure

T170

Compressor Expansion Board Comm Failure

A171

Staged Gas Control Board Comm Failure

T172

Control Expansion Module Comm Failure

A173

RXB board Communication Failure

A174

EXB board Communication Failure

A175

Supply Fan VFD Communication Failure

T176

Exhaust Fan VFD Communication Failure

T177

4-20 mA Demand Limit Failure

T178

4-20 mA Static Pressure Reset Fail

A179

Circuit A ODF VFD Failure

T179

VFD Failure

A180

Circuit B ODF VFD Failure

T180

VFD Failure

A181

Circuit A ODF VFD Communication Failure

A182

Circuit B ODF VFD Communication Failure

T183

Comp Lock Low Ambient

Table 106 — Alert and Alarm Codes

DESCRIPTION

ACTION TAKEN BY CONTROL

Circuit shut down