Power Supply Voltage Imbalance - Daikin REYQ-XA Service Manual

Troubleshooting by Error Code

3.57 Power Supply Voltage Imbalance

P1
Error Code
Applicable
All outdoor unit models
Models
Method of Error
Detect voltage imbalance through PCB.
Detection
Error Decision When power supply voltage imbalance exceeds approximately 12 V.
Conditions
Error is not decided while the unit operation is continued.
P1 will be displayed by pressing the inspection button.
Supposed
Causes
333
Open phase
Interphase voltage imbalance
Defective capacitor in the main circuit
Defective inverter PCB
Defective magnetic relay
Defective wiring in the main circuit
SiUS371901E
Service Diagnosis