Carrier infinity air conditioner fault codes

FAULTAMBER LED FLASH CODEPOSSIBLE CAUSE AND ACTION
NoneOn solid, no flashNormal operation
None1, pauseNormal operation
None2. pauseNormal operation
System Communications Failure16Communication with user interface lost. Check wiring to User Interface, indoor and outdoor units
Invalid Model Plug25Control does not detect a model plug or detects an invalid model plug. Unit will not operate without correct model plug.
High Pressure Switch Open31*High-pressure switch trip. Check refrigerant charge, outdoor fan operation and coils for airflow restrictions.
Low Pressure Switch Open32*Low pressure switch trip. Check refrigerant charge and indoor air flow
Control Fault45Outdoor unit control board has failed. Control board needs to be replaced.
Brown Out (230 v)46Line voltage < 187v for at least 4 seconds. Compressor and fan operation not allowed until voltage >.190v. Verify line voltage.
No 230v at Unit47There is no 230v at the contactor when indoor unit is powered and cooling/ heating demand exists. Verify the disconnect is closed and 230v wiring is connected to the unit.
Outdoor Air Temp Sensor Fault53Outdoor air sensor not reading or out of range. Ohm out sensor and check wiring.
Outdoor Coil Sensor Fault55Coil sensor not reading or out of range. Ohm out sensor and check wiring.
Thermistors out of range56Improper relationship between coil sensor and outdoor air sensor. Ohm out sensors and check wiring.
low-stage Thermal Cutout71*Compressor operation detected then disappears while low-stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long(if installed)
high-stage Thermal Cutout72*Compressor operation detected then disappears while high-stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long (if installed)
Contactor Shorted73Compressor voltage sensed when no demand for compressor operation exists. Contactor may be stuck closed or there is a wiring error.
No 230V at Compressor (24ANA1 Only)74Compressor voltage not sensed when compressor should be starting. Contactor may be stuck open or there is a wiring error.
low-stage Did Not Start (24ANA7 Only)75Specified start voltage at VR terminal was not achieved in low-stage. Start relay was de-energized after 1 second.
low-stage Did Not Start 3 times (24ANA70nly)76For 3 consecutive low-stage starts, the specified start voltage at VR terminal was not achieved & start relay was de-energized, low-stage locked out for 30 minutes.
high-stage Did Not Start (24ANA7 Only)77Specified start voltage at VS terminal was not achieved in high-stage. Start relay was de-energized after 1 second.
high-stage Did Not Start 3 times (24ANA7 Only)78For 3 consecutive high-stage starts, the specified start voltage at VS terminal was not achieved & start relay was de-energized, high-stage locked out for 30 minutes.
low-stage Thermal Lockout81Thermal cutout occurs in three consecutive low/ high-stage cycles, lowstage locked out for 4 hours or until 24v power recycled.
high-stage Thermal Lockout82Thermal cutout occurs in three consecutive high/low-stage cycles, highstage locked out for 4 hours or until 24v power recycled.
Low Pressure Lockout83Low pressure switch trip has occurred during 3 consecutive cycles. Unit operation locked out for 4 hours or until 24v power recycled.