Troubleshooting; Notice - Mitsubishi SRK25ZMP-S Manual Del Propietário

Troubleshooting

Please carry out the following checks before making a service call.
Has the power switch been turned off?
Have you set the thermostat at a suitable
temperature?
Is there any direct sunlight entering the
room?
If the air-conditioner does not operate properly after you have checked the above points, or if any doubt still exists after you have
consulted page 18, or if things happen as shown on page 19, switch off the power and contact your dealer.
An alternative refrigerant (R410A) is used in this air-conditioner. When asking your
dealer for service or inspection and maintenance, explain the dealer about it.

Notice

The unit does not restart immediately after you have
stopped it.
Airflow is not blown out when starting the HEATING opera-
tion.
Airflow is not blown out for 5 to 10 min. or blown out not
warm wind for a moment at HEATING operation.
Airflow is not blown out when starting the DRY operation.
Some steam escapes during COOL operation.
There is a slight smell.
You hear a slight gurgling sound.
You hear a slight cracking sound.
You hear a hissing or clicking sound.
The air-conditioner does not work at all.
Has the timer been set in the "ON"
position?
Poor cooling or heating
Is the air filter clean? (Not clogged?)
Poor cooling
Is there a heat source in the room?
(RUN light is on)
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
(RUN light is on)
– 18 –
Is there a power failure or a blown fuse?
Did you leave any doors or windows
open?
Are there too many people in the room?
Restart is blocked for 3 minutes after you have stopped the op-
eration to protect the unit.
The three-minute protection timer in the microcomputer auto-
matically starts it up again.
Airflow has stopped to prevent blowing out of cold air until the
indoor heat exchanger has warmed up. (2 to 5 min.) (HOT
KEEP program)
When outdoor temperature is low and humidity is high, the unit
sometimes performs defrosting automatically. Please wait. Dur-
ing defrosting, water or steam may escape from the outdoor
unit.
The indoor fan may stop to prevent re-evaporation of dehumified
moisture and to save energy.
This may occur if the room's temperature and humidity are very high. It
disappears as soon as the temperature and humidity decrease.
Air blown out during operation may smell. This is caused by
tobacco or cosmetics adhering to the unit.
This is caused by refrigerating liquid moving within the unit.
This is caused by heat expansion or contraction.
This is caused by the operation of the refrigerant control valves
or electric components.