E5" Compressor Motor Lock - Daikin SkyAir Service Manual

SiBE28-804

5.21 "E5" Compressor Motor Lock

E5
Remote
Controller
Display
Applicable RZQ(S)71~140
Models
Method of Inverter PC board takes the position signal from UVWN line connected between the inverter and
compressor, and detects the position signal pattern.
Malfunction
Detection
Malfunction The position signal with 3 times cycle as imposed frequency is detected when compressor
motor operates normally, but 2 times cycle when compressor motor locks. When the position
Decision
signal in 2 times cycle is detected
Conditions
Supposed
Causes
Troubleshooting
Compressor lock
High differential pressure (2.6MPa or more) starting
Incorrect UVWN wiring
Faulty inverter PC board
Stop valve is left in closed.
Troubleshooting by Remote Controller Display / LED Display
183