Compressor Motor Lock - Daikin SkyAir Super Inverter 70 D Series Service Manual

SiE25-110

6.18 Compressor Motor Lock

E5
Remote
Controller
Display
Outdoor Unit LED
A
Display
Applicable
RZP71~140D
Models
Method of Inverter PC board takes the position signal from UVWN line connected between the inverter and
Malfunction compressor, and detects the position signal pattern.
Detection
Malfunction
The position signal with 3 times cycle as imposed frequency is detected when compressor
Decision motor operates normally, but 2 times cycle when compressor motor locks. When the position
signal in 2 times cycle is detected
Conditions
Supposed
Causes
Troubleshooting
9 1 4 2 3 3 3 4
Compressor lock
High differential pressure (0.5MPa or more) starting
Incorrect UVWN wiring
Faulty inverter PC board
Stop valve is left in closed.
Troubleshooting by Remote Controller Display / LED Display
3
153