Comfortaire AC Error Codes

Some issues can be resolved without any maintenance to the unit, check the chart below to see if there is a suggested solution to the problem before calling for service. But here we give you all Error Codes of Comfortaire Ac.

Error Codes	Meaning
E1	High Pressure Protection
E2	Shutdown for Whole Unit AntiFreeze Protection
E3	Low Pressure Protection
E4	High Discharge Temp 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

Problem: The unit will not operate at all.

Cause:

1. Blown Fuse or tripped circuit breaker
2. Power Failure
3. Remote Control batteries are low
4. Check the remote maybe signal is not being send.

Solution:

1. Check the fuse or circuit breaker. Replace the blown fuse or reset the circuit breaker.
2. Restart the unit when your power restored. If you experience brown out conditions, contact an electrician or your local utility.
3. Replace the batteries. Be sure not to mix old and new batteries, as well as different brands/types
4. Be sure that you are not using the remote control too far away from the indoor unit’s control panel.

Problem: The unit runs and then stops immediately

Cause: Check air inlets and/or outlets maybe blocked.

Solution: Remove any obstacles from the air inlets/outlets/Clean the air filter, louvers, and inlet grille.

Problem: Abnormal heating or cooling

Comfortaire Ac Error Codes And Troubleshooting Method

Cause:

1. First of all check your air inlets and outlets
2. When this happens maybe temperature not set properly
3. Check the fan speed
4. Improper louver adjustment
5. Be sure that there are no other sources of heat/steam in the area being cooled
6. Conditioned air might be escaping

Solution:

1. Remove any obstacles from the air inlets/outlets-Clean the air filter, louvers, and inlet grille.
2. Ensure that the proper mode and temperature is set on the unit. Try to adjust the set point temperature on the thermostat to a better operating temperature
3. Adjust the fan speed to see if that improves the conditions.
4. Try to adjust the louver position to ensure it is open enough.
5. Remove or turn off other appliances producing heat or steam.
6. Ensure that any doors or windows in the area being heated/cooled are closed