En-4
TROUBLESHOOTING
The following conditions may not be breakdowns so check again.
Symptom Items to check
See page
Doesn’t operate at all: Has there been a power failure? ●
—
Has a fuse blown out, or a circuit breaker been tripped? ●
—
Is the main power switch set to the OFF position? ●
—
Are you trying to engage in an operation different from the priority state? ●
2
Is it in standby state? ●
2
The operation mode cannot be
changed:
Are you trying to change to an operation different from the priority conditions? ●
2
Poor Cooling (or Heating) perfor-
mance:
Did you adjust the room temperature settings (thermostat) correctly? ●
—
Is the air fi lter dirty? ●
2
Are the air conditioner’s inlet port or outlet port blocked? ●
—
Is there a window or door open? ●
—
In the case of Cooling operation, is a window allowing bright sunlight to enter? (Close the curtains.) ●
—
In the case of Cooling operation, are there heating apparatus and computers inside the room, or ●
are there too many people in the room?
—
Is the fan speed set to low? ●
—
Set the temperature lower than
the room temperature and use it:
Temperature does not fall down well. ●
Temperature may not fall down depending on the room conditions.
(While high humidity or the room temperature is high.)
2
In the following situations stop operation immediately and get in touch with authorized service personnel.
The problem cannot be solved even when the troubleshooting checks have been performed. ●
The OPERATION indicator lamp (green) is fl ashing very fast (when receiver unit is connected). ●
The wired remote controller or simple remote controller indicate Er (when connected). ●
It has burning smell. ●
For details on marking the Flashing lamps, please refer to the Manual of “IR Receiver Unit” or “Wired Remote Controller”. ●
9374343133-01_OM.indb 49374343133-01_OM.indb 4 2012-6-15 9:23:342012-6-15 9:23:34
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