72
Operation start
Check the outdoor unit
LED indicator.
Refer to 11-6.
"Check of power supply".
• Indoor unit
serial signal
error
Refer to 11-6.
"How to
check
miswiring
and serial
signal error".
• COOL or HEAT
operation only
Refer to 11-6.
"Check of
R.V. coil"
• When heating, room
does not get warm.
• When cooling,
room does not cool.
Refer to 11-6.
"How to check of
inverter/compressor".
Check mispiping,
shortage of capacity
• When cooling, heat
exchanger of non-
operating indoor unit
frosts.
• When heating, non
operating indoor unit
gets warm.
Refer to 11-6.
"Check of LEV".
• When cooling, dew
drops in the non-
operating indoor
unit.
Check of mispiping
Refer to 11-4.
"Troubleshooting check table".
Both LED 1 and
LED 2 are lighting.
LED 1 or LED 2
has blinked.
Both LED 1
and LED 2
are OFF.
11-3. INSTRUCTION OF TROUBLESHOOTING
• Check the indoor unit by referring to the indoor unit service manual, and confirm whether there is any problem in the indoor
unit.
Then, check the outdoor unit by referring to this page.
OBH626B
Summary of Contents for MXZ-2D33VA-E1
Page 16: ...16 OUTLINES AND DIMENSIONS 5 MXZ 2D33VA MXZ 2D40VA MXZ 2D53VA MXZ 2D53VAH Unit mm OBH626B ...
Page 20: ...20 WIRING DIAGRAM 6 MXZ 2D33VA MXZ 2D40VA MXZ 2D53VA OUTDOOR DISPLAY P C BOARD OBH626B ...
Page 21: ...21 MXZ 2D53VAH OUTDOOR DISPLAY P C BOARD OBH626B ...
Page 22: ...22 MXZ 3D54VA OBH626B ...
Page 23: ...23 MXZ 3D68VA OBH626B ...
Page 24: ...24 MXZ 4D72VA OBH626B ...
Page 25: ...25 MXZ 4D83VA OBH626B ...
Page 26: ...26 MXZ 5D102VA OBH626B ...