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The left lamp of OPERA-
Abnormal point
TION INDICATOR lamp
(Failure mode / protection)
(Indoor unit)
Converter
Bus-bar voltage (1)
11-time fl ash
Bus-bar voltage (2)
Even if this protection stop
is performed continuously 3
times, it does not mean the
abnormality in outdoor power
system.
OBH502E
LED indication (Out-
door P.C. board)
LED 1
LED 2
Goes out A failure is detected in the operation of the converter dur-
5 times
ing operation.
Goes out The bus-bar voltage exceeds 400 V or falls to 200 V or
5 times
below during compressor operating.
Goes out The bus-bar voltage exceeds 400 V or falls to 50 V or
6 times
below during compressor operating.
26
Condition
• Check the voltage of
power supply.
• Replace the power board.
• Check the voltage of
power supply.
• Replace the outdoor
electronic control P.C.
board.
Indoor/outdoor
Remedy
unit failure mode
recall function
—
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