Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting page 35

FAULT OR ALERT
A210--- GENERAL STATUS
F211--- GENERAL STATUS
F310--- CIRA DOWN DUE TO FAIL
F311--- CIRA LOW CHARGE
A312--- CIR.A UNEXPECTED OFF
A313--- CIR.A HIGH DISCHARGE
A314--- CIR.A HPS TRIP
A315--- CIR.A LOW DISCHARGE
A316--- CIR.A LOW SUCTION
A317--- CIR.A PRESSURE RATIO
F318--- COMPRESSOR STUCK ON
F319--- C.A1 DOWN DUE TO FAIL
A320--- C.A1 REVERSE ROTATION
A321--- C.A1 FAIL TO PRESSURE
F322--- C.A2 DOWN DUE TO FAIL
A323--- C.A2 REVERSE ROTATION
A324--- C.A2 FAIL TO PRESSURE
A410--- IGC IGNITION FAILURE
F411--- ROLLOUT WITHOUT HEAT
F412--- RUN AWAY HEAT
A510--- INDOOR FAN STATUS
F511--- IDF OFF WHEN COMMAND ON
F512--- IDF ON WHEN COMMAND OFF
F600--- IDF VFD COMMUNICATION
F601--- IDF VFD UNEXPECTED
F602--- IDF VFD LOCKOUT
A603--- IDF VFD IN HAND
F604--- IDF VFD IN HAND
A605--- IDF VFD THERMAL WARNING
A606--- IDF VFD VOLTAGE WARNING
A607--- IDF VFD CURRENT LIMIT
A608--- IDF VFD WARNING
F611--- IDF VFD EARTH FAULT
F612--- IDF VFD CTL WORD LOSS
F613--- IDF VFD OVER CURRENT
F614--- IDF VFD MOTOR OVER TEMP
F615--- IDF VFD OVERLOAD
F616--- IDF VFD UNDER VOLTAGE
F617--- IDF VFD OVER VOLTAGE
F618--- IDF VFD SHORT CIRCUIT
F619--- IDF VFD MAIN PHASE LOSS
F620--- IDF VFD PHASE U LOSS
F621--- IDF VFD PHASE V LOSS
F622--- IDF VFD PHASE W LOSS
F623--- IDF VFD CONTROL VOLTAGE
F624--- IDF VFD SUPPLY VDD
A700--- ECON NOT MODULATING
A701--- ECON STUCK CLOSED
A702--- ECON STUCK OPEN
A703--- ECON MECH DISCONNECTED
A710--- ECON NOT COOLING
A711--- ECON IMPROPER COOLING
A712--- EXCESSIVE OUTDOOR AIR
Table 13 — SystemVut Controller Alarm Codes (cont)
ACTION TAKEN BY RESET
CONTROL METHOD
Alert Generated Automatic
Unit Shutdown Automatic
Shutdown Circuit A Manual
Shutdown Circuit A Manual
Strike for active compressors Automatic
Unload compression and up Automatic
ODF to High cool speed
Add compressor strikes Automatic
Add compressor strikes Automatic
Add compressor strikes Automatic
Add compressor strikes Automatic
Unit in Safety Shutdown Manual
Lockout Compressor A1 Manual
Add Strike for compressor A1 Automatic
Add Strike for compressor A1 Automatic
Lockout Compressor A2 Manual
Add Strike for compressor A2 Automatic
Add Strike for compressor A2 Automatic
Lockout Heat Automatic
Unit in Safety Shutdown Automatic
Unit in Safety Shutdown Automatic
Alert Generated Automatic
Unit Shutdown Manual
Unit Shutdown Manual
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Power Cycle
Alert Generated Automatic
Unit Shutdown Automatic
IDF speed reduced Automatic
IDF speed reduced Automatic
IDF speed reduced Automatic
IDF speed reduced Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Alert Generated Automatic
Alert Generated Automatic
Alert Generated Automatic
Alert Generated Manual
Alert Generated Automatic
Alert Generated Automatic
Alert Generated Automatic
PROBABLE CAUSE
General Switch activation or wrong configuration
General Switch activation or wrong configuration
Compressors have 3 strikes or has been locked out by another alarm
Low refrigerant or faulty pressure transducer
Compressor failure, transducer failure, or nuisance operating conditions
An overcharged system, high outdoor ambient temperature coupled with
dirty outdoor coil, plugged filter drier, or ODF speeds being set too low.
An overcharged system, high outdoor ambient temperature coupled with
dirty outdoor coil, plugged filter drier, or ODF speeds being set too low.
An undercharged system, low outdoor ambient temperature coupled with
dirty outdoor coil, plugged filter drier, or ODF speeds being set too high
Low refrigerant charge, dirty filters, evaporator fan turning 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, plugged filter drier, faulty transducer, the ambient
temperature is low and the ODFs are running too fast.
Welded contactor or frozen compressor relay on MBB
Compressor A1 has 3 strikes or has been locked out by another alarm
Wiring causing reverse rotation or faulty compressor
Wiring causing reverse rotation or faulty compressor
Compressor A2 has 3 strikes or has been locked out by another alarm
Wiring causing reverse rotation or faulty compressor
Wiring causing reverse rotation or faulty compressor
Faulty wiring of the IGC, no gas flow, or wrong configuration
Faulty wiring of the IGC, or rollout switch trip without a heat call
Heat stuck on causing high SAT, or low air flow
Belt broke, motor failure, or configuration error.
Fan stuck on, or Configuration incorrect.
Tripped Circuit Breaker. Broken belt. Bad indoor fan motor. Configuration
incorrect.
Communication failure, noise on the bus, wiring error, or configuration error.
VFD fault, refer to VFD section
VFD locked itself out
VFD keypad used to put the VFD in hand or off mode
VFD keypad used to put the VFD in hand or off mode
Motor improper size, motor overload, or configuration errors
Motor improper size, motor overload, or configuration errors
Motor improper size, motor overload, or configuration errors
Motor improper size, motor overload, or configuration errors
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
VFD fault, refer to VFD section
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
No economizer motion. Check damper blades, gears, and actuator. Actuator
direction control switch (CCW, CW) wrong.
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