Sanyo Variable Refrigerant Flow
Re: Error Code E04 / Fault Code E04
Error Code E04 = Number of detected indoor units does not match the quantity of indoor units set on the outdoor unit control board.
Possible Causes (From Most to Least Likely):
- Indoor Unit(s) Powered Off
- Break in Communication Wire
- Incorrect ID Unit Setting
CHECKOUT
- Confirm Error Code
- Check LED1 & LED2 on the outdoor unit control board.
- LED1 Flashes: 2=P Alarm, 3=H Alarm, 4=E Alarm, 5=F Alarm, 6=L Alarm
- LED2 Flashes = Alarm No.
- LED1 Flashes 4, LED2 Flashes 4 = "E04"
- Check each indoor unit on the system to make sure that it has power.