Comfort Air AC Error Codes 

Comfort Air AC Error Codes 

Some issues can be resolved without maintenance of the unit, check the chart below to see suggested solutions to the problem before calling for service.

Glossary of error codes and their meanings:
Error code meaning


E1 High Pressure Protection


E2 shutdown for whole unit antifreeze protection


E3 low pressure protection


E4 High Discharge Temporary Protection


E6 communication error


E9 indoor unit water full error


Fo Refrigerant Recovery Mode


F3 Outdoor Ambient Temp Sensor Error


F4 Outdoor Mid-coil Temp Sensor Error


F5 outdoor discharge air temp sensor error


F7 oil return for cooling


H1 forced defrosting


H2 oil return for heating or defrosting


H3 Compressor Overheat Protection


H5 IPM Security


H7 Motor Desynchronizing


HC PFC Error


Lc startup failure


La dc fan motor error


Ld phase loss


Le Compressor Stalling


Lf over speed


P0 IPM Reset


P5 Compressor Current Protection


P6 communication error between inverter drive and main controller


P7 radiator temporary sensor error


P8 Radiator Overheat Protection


P9 AC Contact Security


Pc current sensor error


PD sensor connection protection


PH over voltage protection


PL low voltage protection


PE Floating Drift Protection


PF drive board ambient temp sensor error


PA AC Current Protection


PU charging circuit error


PP AC input voltage discrepancy


Comfort Air AC Error Codes 

Troubleshooting


Problem: The unit will not working at all.
reason:
1. Blown fuse or tripped circuit breaker
2. power failure
3. Remote control batteries are low
4. The signal is not being sent by remote control
Solution:
1. Check fuse or circuit breaker. reset circuit breaker or Replace the blown fuse.
2. Wait until power is restored to restart the unit. If you experience brown out condition, contact electrician or your nearest utility.
3. Change the battery. Make sure not to mix different brands / types with old and new batteries.
4. Ensure that you are not using a remote control far away from the control panel of the indoor unit.


Problem: The unit runs and then immediately shuts down
Reason: Air inlets and / or outlets are blocked
Solution: Remove any obstruction from the air inlets / outlets / clean the air filter, louvre and inlet grill.


Problem: Abnormal heating or cooling
reason:
1. Air inlet and / or outlet are blocked
2. improper temperature is set
3. Check fan speed
4. Improper louver adjustment
5. Ensure that there are no other sources of heat / steam in the cooling zone
6. Air-conditioned air can escape
Solution:
1. Remove any obstruction from the air inlets / outlets- clean the air filters, louvers and inlet grills.
2. Ensure that the appropriate mode and temperature is set to the unit. Try adjusting the set point temperature on the thermostat to a better operating temperature
3. Adjust the fan speed to see if the situation improves.
4. Try to adjust the position of the louver to ensure that it is open enough.
5. Remove or turn off other devices that produce heat or steam.
6. Ensure that any doors or windows in the hot / cold area are closed

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