Troubleshooting - NEC RIH-6867 User Manual

Troubleshooting

The following cases may not always be a malfunction, please check it before asking for service.
Trouble
Does not run
No cooling or
heating air
Ineffective control
Does not operate
immediately
Peculiar odour
A sound of
flowing water
Cracking sound is
heard
Spray mist from
the outlet
The compressor indicator(red) lights on constantly,
and indoor fan stops.
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It is not
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Analysis
If the protector trip or fuse is blown.
Please wait for 3 minutes and start again,
protector device may be preventing unit to work.
.
If batteries in the remote controller exhausted.
If the plug is not properly plugged.
Is the air filter dirty?
Are the intakes and outlets of the air
conditioner blocked？
Is the temperature set properly？
If strong interference(from excessive static
electricity discharge, power supply voltage
abnormality)presents, operation will be
abnormal. At this time, disconnect from the
power supply and connect back 2-3 seconds later.
Changing mode during operation, 3 minutes
will delay.
This odour may come from another source
such as furniture, cigarette etc, which is
sucked in the unit and blows out with the air.
Caused by the flow of refrigerant in the
air conditioner, not a trouble.
Defrosting sound in heating mode.
The sound may be generated by the expansion
or contraction of the front panel due to change
of temperature.
Mist appears when the room air becomes
very cold because of cool air discharged
from indoor unit during COOLING
operation mode.
The unit is shifting from heating mode to defrost.
The indicator will lights off within ten minutes and
returns to heating mode.
or DRY