Fault Codes Carrier Alpha

Carrier Alpha Series Fault Codes

x Extinguish
* Flash at 5Hz

Carrier AS10-15

Cooling only model

Failure PhenemenonOperation lampTimer lamp
Indoor fan speed has been out of control for over 1
minute
*x
Indoor room temp. Or evaporator sensore is open circuit
or short circuit
*on
Over current protection of the compressor occurs 4 timesx*
EEPROM erroron*
No over-zero signal**

Heat pump model

Failure PhenemenonOperation lampTimer lampDefrosting lamp
Over current protection of the compressor occurs 4 times*x*
Indoor fan speed has been out of control for over 1
minute
x**
No over-zero signal***
Temp. sensor on indoor evaporator is open circuit or short
circuit
xx*
Indoor room temp. Sensor is open circuit or short circuitx*x
EEPROM erroron*x

Carrier AS15H

LED status

Operation indicator, time indicator, Defrosting indicator
(fan indicator, for cooling only type) auto indicator flicker
Four times Current protection (PRCUR1) 5Hz
Time indictaor flickers at 5Hzthe room temperature sensor o is open or short
Operation indicator flickers at 5Hzthe evaporator temperature sensor is openor short
Defrosting indicator flickers at 5Hzthe condensor temperature sensor is open or short
Defrosting indicator, auto indicator flicker at 5HzOutdoor unit protects (Outdoor temp, sensor, phase order
etc)
Auto indicator, indicator flicker at 5HzEEPROM Communication error

Carrier AS35C_H

7.1 Indoor unit

LED status

Operation indicator, time indictaor, Defrosting (fan
indicator, for cooling only type) indicator flicker at 5Hz
Four times Current protection (PRCUR1) 5Hz
Time indicator flickers at 5Hzthe room temperature sensor o is open or short
Operation indicator flickers at 5Hzthe evaporator temperature sensor is openor short
Defrosting indicator flickers at 5Hzthe condensor temperature sensor is open or short
Operation indicator, time indicator, indicator flicker at 5HzEEPROM error
Defrosting indicator, auto indicator, indicator flicker at
5Hz
Outdoor unit protects (Outdoor temp, sensor, phase order
etc)
Auto indicator, indicator to flicker at 5HzCommunication error

7.2 Outdoor unit

LED status (the times after 2 seconds interval)

5 timesCommunication error
4 timesPhase order protection
3 timesPressure protection
2 timesThe condensor temperature sensor is open or short
1 timeIndoor unit abnormal
OnWorking status