Compressor Motor Lock; E5" Compressor Motor Lock - Daikin RXYQ72 Serivce Manual

SiUS39-601
2.16 "E5"

Compressor Motor Lock

E5
Remote
Controller
Display
Applicable RXYQ72M, 96M
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 signal in 2
Decision
times cycle is detected.
Conditions
Supposed
Causes
Troubleshooting
Compressor lock
High differential pressure (72psi or more)
Incorrect UVWN wiring
Faulty inverter PC board
Stop valve is left in closed.
Troubleshooting by Indication on the Remote Controller
139