41
Check of HPS
• When the operation frequency does not go up from lowest frequency.
MUZ-GA60VA
-
E3
MUZ-GA71VA
Infinity
0
Ω
No
Yes
1. Disconnect the connector CN681 in the electronic control P.C. board.
2. Check the resistance of HPS 1 minute after the outdoor unit power supply was turned OFF.
Check the resistance between
each terminal.
Reconnect CN681.
Turn ON power supply to the indoor and outdoor unit.
3 minutes later, start EMERGENCY OPERATION.
Is HPS protection displayed
immediately after compressor
starts?
Replace HPS.
Replace the electronic control P.C. board.
Normal
I Check of bus-bar voltage
•Check the voltage of power supply.
•Con
fi
rm outdoor unit failure mode
recall function. (Refer to 11-2.2.)
Blink 5 times
Con
fi
rm LED1 indication lamp on
the outdoor electronic control P.C.
board.
Replace the power board.
Blink 9 times
Replace the outdoor
electronic control P.C. board.
Turn OFF power supply before removing P.C. board.
Con
fi
rm LED1 indication lamp
on the outdoor electronic
control P.C. board.
Turn ON power supply.
Start operation.
Blink 6 times
Replace the outdoor electronic
control P.C. board .
Lighting
Replace the outdoor
electronic control P.C. board.
Blink 9 times
Replace the power board.
Con
fi
rm LED1 indication lamp
on the outdoor electronic
control P.C. board.
Turn ON power supply.
Start operation.
Normal
Lighting
Lighting
Содержание MUZ-GA50VA-E1
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