U4" Malfunction Of Transmission Between Indoor Units - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C
U4
4.48 " " Malfunction of Transmission between Indoor Units
U4
Remote
Controller
Display
Applicable All model of indoor unit
RTSQ8P~16P (Outdoor Unit)
Models
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 indoor unit PCB
Defect of outdoor unit PCB
Troubleshooting by Indication on the Remote Controller
300