Mitsubishi Electric PL-1.6KJB [32/44] Troubleshooting
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Mitsubishi Electric PL-1.6KJB [32/44] Troubleshooting

Mitsubishi Electric PL-1.6KJB [32/44] Troubleshooting
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4. Troubleshooting
Before you call out a repair man, check the following table to see whether there is a simple solution to your problem.
E
NOTE: After a power cut, the unit will not restart automatically. You will have to restart it by pressing the POWER - ON/OFF button on the remote controller.
If none of the above apply, turn the main switch off and contact the dealer from whom you bought the air-conditioner, telling him the model name and the nature of the problem.
Do not try to fix the unit yourself.
In any of the following cases, turn off the main power switch and contact your local dealer for service:
Inspection status: The unit stops and “1” in the time remaining display of the timer lights up as well as the green lamp where the trouble occurred. All of the other lamps are
off.
• The switches do not work properly.
• The circuit breaker trips frequently (or the fuse blows frequently).
• Water has accidentally been splashed into the unit.
• Water leaks from the unit.
• Something is accidentally dropped into the air-conditioner.
• An unusual noise is heard during operation.
The following do not indicate any malfunction:
Odours: smells such as tobacco or cosmetic odours may persist after they have been sucked into the unit.
Sound of liquid flowing inside indoor unit: this can occur during or after operation and is simply the sound of refrigerant being circulated inside the unit.
Ticking sound coming from indoor unit: this can occur when cooling has just begun or has just stopped. It is caused by the indoor unit shrinking or expanding slightly due to the
change in temperature.
Problem
Unit will not start.
Unit discharges air well, but fails to cool
the room well.
Unit does not start immediately.
Unit stops soon after starting.
Cause
Main power switch is turned off.
Main power fuse has blown.
Outdoor unit’s ground fault breaker is open.
A power cut has occurred (see NOTE be-
low).
Improper temperature setting - e.g. you
have selected COOL mode, but the desired
temperature setting is higher than the cur-
rent room temperature.
Filters are clogged.
Outdoor unit’s intake or outlet is obstructed.
A door or window has been left open.
Unit is waiting three minutes before restart-
ing.
Indoor or outdoor unit’s intake or outlet is
obstructed.
Filters are clogged.
Solution
Turn main power on. Then press the
POWER ON/OFF button to turn the unit
on.
Replace the fuse.
Reset the ground fault breaker.
Wait until power is restored, then press
the POWER ON/OFF button to turn the
unit on.
Check the set temperature on the remote
controller and the actual intake air tem-
perature. Use the COOLER buttons to set
the temperature as described in “Select-
ing a temperature” on page 16.
Clean the filter and resume operation.
See “Cleaning the filters and the indoor
unit” on page 28.
Remove the obstruction.
Shut door or window.
Wait until the unit restarts automatically.
The compressor may hesitate resuming
because a three-minute resume preven-
tion circuit is incorporated in the outdoor
unit for protection of the compressor.
Remove obstruction and restart the unit.
Remove the obstruction. Clean the filter
and resume operation. See “Cleaning
the filters and the indoor unit” on page
28.
Display reading
Pilot lamp does not turn on even when the
POWER ON/OFF button is pressed.
Remote controller shows that the unit is
operating.
Remote controller shows that the unit is
operating.
The green lamps “1”, “7” or “12” on the dis-
play showing remaining time of the timer
are lit up, but the other lamps are all off.
(Inspection status)

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