Mitsubishi Electric MSY-GS07VF, Operating Instructions Manual

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En-18
Symptom Explanation & Check points
Multi system
The indoor unit which is not operating
becomes warm and a sound, similar to
water fl owing, is heard from the unit.
• A small amount of refrigerant continues to fl ow into the indoor unit even
though it is not operating.
When heating operation is selected,
operation does not start right away.
• When operation is started during defrosting of outdoor unit is done, it
takes a few minutes (max. 10 minutes) to blow out warm air.
Outdoor Unit
The fan of the outdoor unit does not
rotate even though the compressor is
running. Even if the fan starts to rotate, it
stops soon.
• When the outside temperature is low during cooling operation, the fan
operates intermittently to maintain suffi cient cooling capacity.
Water leaks from the outdoor unit. • During COOL and DRY operations, pipe or pipe connecting sections
are cooled and this causes water to condense.
• In the heating operation, water condensed on the heat exchanger drips
down.
• In the heating operation, the defrosting operation makes ice forming on
the outdoor unit melt and drip down.
White smoke is discharged from the
outdoor unit.
• In the heating operation, vapor generated by the defrosting operation
looks like white smoke.
Remote controller
The display on the remote controller does
not appear or it is dim. The indoor unit
does not respond to the remote control
signal.
• Are the batteries exhausted? Page 7
• Is the polarity (+, -) of the batteries correct? Page 7
• Are any buttons on the remote controller of other electric appliances
being pressed?
Does not cool or heat
The room cannot be cooled or heated
suffi ciently.
• Is the temperature setting appropriate? Page 8
• Is the fan setting appropriate? Please change fan speed to High or
Super High. Page 10
• Are the fi lters clean? Page 14
• Is the fan or heat exchanger of the indoor unit clean? Page 14
• Are there any obstacles blocking the air inlet or outlet of the indoor or
outdoor unit?
• Is a window or door open?
• It may take a certain time to reach the setting temperature or may not
reach that depending on the size of the room, the ambient temperature,
and the like.
The room cannot be cooled suffi ciently. • When a ventilation fan or a gas cooker is used in a room, the cooling
load increases, resulting in an insuffi cient cooling effect.
• When the outside temperature is high, the cooling effect may not be
suffi cient.
The room cannot be heated suffi ciently. • When the outside temperature is low, the heating effect may not be
suffi cient.
Air does not blow out soon in the heating
operation.
• Please wait as the unit is preparing to blow out warm air.
W
HEN YOU THINK THAT TROUBLE HAS OCCURRED
A5_JG79Y754H01_01En.indd 18 2020/06/02 10:07:04