DM-1
Monosplit “Wall” Personal Line Constant Speed - Section 6: Diagnostic & Maintenance
6. DIAGNOSTIC & MAINTENANCE
The following table shows a series of apparent malfunctions.
Carry out the checks described below before contacting Authorized Technical Service.
PROBLEM
PROBABLE EXPLICATION
¦
Air conditioner will restart after 3 minutes have elapsed since it stopped.
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Indoor Unit emits a disagreeable
smell.
¦
Indoor Unit treats air inside the room and may absorb odours eventually
present in the environment (for example: tobacco, beauty products, etc.).
¦
This occurs if system works for a long time in Cooling mode or in Dry mode
in environments where humidity is very high.
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Signals sent by remote control are not
received by Indoor Unit.
No “beep” sound is heard coming from
the buzzer on Indoor Unit.
¦
Condensate forms on Indoor Unit’s
air outlets.
¦
This phenomenon may occur if indoor temperature and relative humidity are
very high, and ends when temperature and humidity decrease.
¦
At start of operation in Heating mode,
Indoor Unit does not supply air.
¦
It is necessary to wait for 2 ~ 5 minutes before air will be supplied, to allow
pre-heating (funzione “HOT KEEP”) of Indoor Unit’s heat exchanger and to
avoid cool air currents.
¦
In Dry mode, Indoor Unit does not
supply air.
¦
If outodoor temperature is low with high humidity, Unit may carry out automatic
defrosting. Wait for about 15 minutes. Durong automatic defrosting, water and
vapour come out from Outdoor Unit.
¦
In Cooling mode, Indoor Unit emits
vapour.
¦
If signal receiver on Indoor Unit is exposed to direct sunlight or to strong
lighting, it is possible that signals sent by remote control are not received.
¦
Indoor Unit keeps on supplying air
also after stop of operation in Cooling
mode.
¦
In this case, indoor fan rotates slowly for some time, so as to remove humidity
from heat exchanger and avoid the forming of mould. Air outlet horizontal flap
closes after 30 seconds.
¦
In Heating mode, Indoor Unit does not
supply air for 6 - 12 minutes.
¦
Sometimes, indoor fan may be stopped to reduce the forming of condensate
(possible dripping).
¦
Gurgling or hissing sounds
comes out of Indoor Unit.
¦
This is not a malfunction. These sounds are due to refrigerant flowing inside
circuit, and are more frequent at start and/or stop of system.
¦
Creaking sounds are heard after a
system’s stop, or after disconnecting the
plug from the power socket.
¦
This occurs after thermal expansion of Indoor Unit’s plastic parts and is not
a malfunction.
¦
After a blackout, system cannot
restart automatically.
¦
Microcomputer memory has been reset. Use remote control to restore
system’s operation.
¦
Each time operation has to restart after a stop of compressor, a 3-minutes
protection function intervenes to avoid damages to compressor.
Does it not
restart?
Wait for
3 minutes.
¦
After a stop, system does not
immediately restart.
¦
“Running” lamp flashes.
¦
If there are obstacles in front of IR
receiver on Indoor Unit, please remove
these obstacles.
Содержание HCND 261 G
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