56
11-time flash
15-time flash
• Check the connecting
wire between outdoor
electronic control
P.C. board and power
board.
• Replace the power
board.
• Check the connecting
wire between electronic
control P.C. board,
noise filter P.C. board
and power board.
• Check the voltage of
power supply.
• Replace the power board.
• Check the voltage of
power supply.
• Replace the outdoor
electronic control
P.C. board.
• Refer to 11-6. "Check
of LEV".
• Check the drain pump of
the indoor unit.
The communication between boards
protection cut-out operates 2
consecutive times.
Communication error occurs
between the electronic control P.C.
board and power board for more
than 10 seconds.
Current sensor protection cut-out
operates 2 consecutive times.
A short or open circuit is detected in
the current sensor during compressor
operating.
The protection cut-out of the zero cross
detecting circuit operates 10
consecutive times.
Zero cross signal cannot be detected
while the compressor is operating.
A failure is detected in the operation
of the converter during operation.
The bus-bar voltage exceeds 400 V or
falls to 200 V or below during
compressor operating.
The bus-bar voltage exceeds
400 V (MXZ-3C54/3C68/4C71VA)
430 V (MXZ-4C80/5C100VA)
or falls to 50V or below during
compressor operating.
Communication error
between P.C. boards
Current sensor
Zero cross detecting circuit
Converter
Bus-bar voltage
(1)
Bus-bar voltage
(2)
Even if this protection stop is
performed continuously three
times, it does not mean the
abnormality in outdoor power
system.
LEV and drain pump
Lighting 6 times
Lighting 7 times
5 times
Goes
out
5 times
Goes
out
5 times
6 times
Goes
out
Goes
out
The indoor unit detects any abnormalities
in the LEV and drain pump.
Lighting Lighting
Abnormal point
(Failure mode/protection)
Condition
Remedy
Indoor/outdoor
unit failure mode
recall function
LED indication
(Outdoor P.C. board)
LED 1
LED 2
Upper or left lamp of
OPERATION INDICATOR
lamp (Indoor unit)
NOTE
: Blinking patterns of this mode differ from the ones of "Troubleshooting check table" (11-4).
Содержание MXZ-3C54VA
Страница 16: ...16 WIRING DIAGRAM 6 MXZ 3C54VA ...
Страница 17: ...17 MXZ 3C68VA ...
Страница 18: ...18 MXZ 4C71VA ...
Страница 19: ...19 MXZ 4C80VA ...
Страница 20: ...20 MXZ 5C100VA ...
Страница 21: ...21 MXZ 6C120VA ...