Air Conditioner Runs But Does Not Cool (Heat) The Room - Daikin SiBE04-624_B_FTXR-E Service Manual

Troubleshooting
2.3

Air conditioner runs but does not cool (heat) the room.

Error Code
Error Decision
Conditions
Supposed
Causes
78
Improper setting for temperature
Incorrect combination of indoor unit and outdoor unit
Clogged air filter
Insufficient power
Refrigerant piping is too long
Defective field piping (squeezed, etc.)
SiBE04-624_B
Service Diagnosis