U2" Abnormal Power Supply Voltage - Daikin ESIE13-02 Service Manual

ESIE13-02

"U2" Abnormal Power Supply Voltage

5.2
U2
Remote controller
display
Method of Malfunction is detected according to the voltage of main circuit capacitor built in the inverter and power
malfunction supply voltage.
detection
Malfunction When the voltage of main circuit capacitor built in the inverter and power supply voltage drop:
decision conditions
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* Remote controller does not decide the abnormality.
Supposed causes
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for V3 only: 150-170 VAC or when the power failure of several tons of ms or longer is generated
or DC voltage is not in range of 305~380 VDC.
for W1 only: 300-320 VAC or when the power failure of several tons of ms or longer is generated
or DC voltage is not in scope of 508~620 VDC.
Drop in power supply voltage (180 V or less)
Instantaneous power failure
Inverter open phase (Phase T)
Faulty main circuit wiring
Faulty outdoor inverter PC board
Main circuit parts damaged
Error Codes: System Malfunctions
141 Part 4 – Troubleshooting
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