
77
11
TROUBLESHOOTING
3. Troubleshooting procedure
1) Check if the OPERATION INDICATOR lamp on the indoor unit is
fl
ashing on and off to indicate an abnormality. To
make sure, check how many times the OPERATION INDICATOR lamp is
fl
ashing on and off before starting service
work.
2) Before servicing, check that the connector and terminal are connected properly.
3) When the P.C. board seems to be defective, check the copper foil pattern for disconnection and the components for
bursting and discoloration.
4) Refer to 11-2, 11-3 and 11-4.
11-1. CAUTIONS ON TROUBLESHOOTING
1. Before troubleshooting, check the following:
1) Check the power supply voltage.
2) Check the indoor/outdoor connecting wire for miswiring.
2. Take care of the following during servicing
1) Before servicing the air conditioner, be sure to turn OFF the unit
fi
rst with the remote controller, and after con
fi
rming
the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug.
2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the P.C. board.
3) When removing the electrical parts, be careful of the residual voltage of smoothing capacitor.
4) When removing the P.C. board, hold the edge of the board with care NOT to apply stress on the components.
5) When connecting or disconnecting the connectors, hold the connector housing. DO NOT pull the lead wires.
11-2. FAILURE MODE RECALL FUNCTION
This air conditioner can memorize the abnormal condition which has occurred once.
Even though LED indication listed on the troubleshooting check table (11-4.) disappears, the memorized failure details
can be recalled.
1. Flow chart of failure mode recall function for the indoor/outdoor unit
Refer to the service manual of indoor unit.
Lead wiring
Connector housing
<Incorrect>
<Correct>
MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA
MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ
OBH723C
Содержание MXZ-2E53VAHZ
Страница 16: ...16 MXZ 4E83VA Unit mm Air in Air in Air in Air out OBH723C ...
Страница 17: ...17 MXZ 5E102VA Unit mm Air in Air in Air in Air out OBH723C ...
Страница 18: ...18 Unit mm MXZ 2E53VAHZ OBH723C ...
Страница 19: ...19 MXZ 4E83VAHZ Unit mm OBH723C ...
Страница 22: ...22 MXZ 4E83VA E1 OBH723C ...
Страница 23: ...23 MXZ 4E83VA E2 OBH723C ...
Страница 24: ...24 MXZ 4E83VA ET1 OBH723C ...
Страница 25: ...25 MXZ 4E83VA ET2 OBH723C ...
Страница 26: ...26 MXZ 4E83VA ER1 OBH723C ...
Страница 27: ...27 MXZ 5E102VA E1 OBH723C ...
Страница 28: ...28 MXZ 5E102VA E2 OBH723C ...
Страница 29: ...29 MXZ 5E102VA ET1 OBH723C ...
Страница 30: ...30 MXZ 5E102VA ET2 OBH723C ...
Страница 31: ...31 MXZ 5E102VA ER1 OBH723C ...
Страница 32: ...32 MXZ 2E53VAHZ E1 OBH723C ...
Страница 33: ...33 MXZ 2E53VAHZ ER1 OBH723C ...
Страница 34: ...34 MXZ 4E83VAHZ E1 OBH723C ...
Страница 35: ...35 MXZ 4E83VAHZ ER1 OBH723C ...