2.43 "U2" Outdoor Unit; Or Instantaneous Failure; U2" Outdoor Unit: Power Supply Insufficient Or Instantaneous Failure - Daikin RXYQ72 Serivce Manual

SiUS39-601

2.43 "U2" Outdoor Unit:

Instantaneous Failure
U2
Remote
Controller
Display
Applicable RXYQ72M, 96M
Models
Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Malfunction
Detection
Malfunction When the capacitor above only has a voltage of 190 V or less.
Decision
Conditions
Supposed
Causes
Troubleshooting
Power Supply Insufficient or
Power supply insufficient
Instantaneous failure
Open phase
Defect of inverter PC board
Defect of outdoor control PC board
Defect of K1M.
Main circuit wiring defect
Troubleshooting by Indication on the Remote Controller
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