Mitsubishi Electric MXZ-2A40VA Service Manual page 55

The left lamp of
Abnormal point
OPERATION INDICATOR
(Failure mode / protection)
lamp(Indoor unit)
Current sensor
11-time flash
Bus-bar voltage
14-time flash Power module
15-time flash LEV for drain
NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (13-4.).
LED indication
(Outdoor P.C. board) Condition
LED 1 LED 2
8 times Goes
When a short or open circuit is
out detected in the current sensor
during compressor operating.
6 times Goes When the bus-bar voltage exceeds
out 430V or falls to 50V or below during
compressor operating.
7 times Goes
There is a high possibility that the
out
power module is out of order.
Lighting Lighting When the indoor unit detectes any
abnormal in the LEV for drain.
55
Indoor/outdoor
Correspondence
unit failure mode
recall function
• Replace the power
board.
• Replace the power
board.
• Refer to 13-6.E "How to
check inverter/
compressor".
• Refer to 13-6.D "Check
of LEV".
• Check the drain pump of
the indoor unit.