If you re handy with electronics you may be able to fix these problems but if not it s time to call a pro.
Carrier ac indoor unit displays error code e1.
One of the main problems in the inverter air conditioner is e1 or communication error indoor outdoor the most common reason for an e1 error code to be displayed on your air conditioner s front panel is to remind you that the unit s air filter needs to be cleaned.
Carrier air conditioning error code eo ol 1 time indoor unit eeprom parameter error.
Troubleshooting an e1 error code.
E3 ol 4 time the speed of the indoor fan has gone out of control.
If an e1 error code shows up in your air handler that means there is a communication error either with the indoor unit or the outdoor unit.
E1 ol 2 time indoor outdoor units communication error.