3-15 Compressor down by antifreeze control (Error Code: E403)
1. Check items
1) Check if the indoor fan/motor is working properly
2) Check if the indoor EEV is working properly
3) Check the indoor heat exchanger IN/OUT sensor
4) Check if the indoor air inlet blocked
2. How to check
Is the indoor fan/motor working properly?
Is the sensor on indoor
heat exchanger shows
the temperature correctly?
Is the indoor EEV working properly?
Check for indoor air inlet blockage
Check the relevant indoor fan
No
Yes
Yes
Yes
No
No
Check the relevant EEV
Refer to temperature sensor error section
to check for error
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