U4 " Malfunction Of Transmission Between Indoor Units; And Outdoor Units - Daikin RQYQ140-180PY1 Service Manual

SiBE341001
U4
2.33 " " Malfunction of Transmission between Indoor Units

and Outdoor Units

U4
Remote
Controller
Display
Applicable All indoor unit models
RQYQ-PY1
Models
RQEQ-PY1
Method of Check if the transmission between indoor unit and outdoor unit is correctly executed using
micro-computer.
Malfunction
Detection
Malfunction When transmission is not carried out normally for a certain amount of time
Decision
Conditions
Supposed
Causes
Troubleshooting
Indoor to outdoor, outdoor to outdoor transmission wiring F1, F2 disconnection, short circuit
or wrong wiring
Outdoor unit power supply is OFF
System address does not match
Defect of outdoor unit main PCB (A1P)
Defect of indoor unit PCB
Troubleshooting by Remote Controller
162