Transmission Error Between Indoor Units And Outdoor Units - Daikin LRYEQ16AY1 Service Manual

Troubleshooting

8.4.51 Transmission Error between Indoor Units and Outdoor Units

U4
Error Code
Applicable All indoor models
LRYEQ16AY1
Models
Method of Error Check if the transmission between indoor unit and outdoor unit is correctly executed using
micro-computer.
Detection
Error Decision When transmission is not carried out normally for a certain amount of time
Conditions
Supposed
Causes
239
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
Defective outdoor unit PCB (A1P)
Defective indoor unit PCB
SiBE811001EB
CONVENI-PACK