Ultra Heat GMV Multi VRF_Heat Recovery Serial
56
Following circumstances are not malfunction.
When unit is started immediately after it
is just turned off
Overload protection switch makes it run after 3
minutes delay
Standby operating for about 1 minute
Indoor high humidity air is cooled rapidly
Slight cracking sound is heard when
just turned on
It is noise when electronic expansion valve
initialization
There is consecutive sound when
cooling
That's sound for gas refrigerant flowing in unit
There is sound when unit starts or
stops
That's sound for gas refrigerant stops to flow
There is slight and consecutive sound
when unit is running or after running
That's sound for operation of drainage system
Cracking sound is heard when unit is
operating and after operating
That’s sound caused by expansion of panel and
other parts due to temperature change
When unit runs after no operation for a
long period
Dust in indoor unit is blew out
The room odor absorbed by the unit is blew out again
Indoor unit still runs
after switch off
After every indoor unit receive "stop"
signal, fan will keep running
Indoor fan motor will keep running 20-70s so as to
take good use of excess cooling and heating and
prepare for next operation
COOL or HEAT mode cannot be
operated
When the indoor operating mode conflicts with that of
outdoor unit, indoor fault indicator will flash and
conflict will be shown on the wired controller after 5
minutes. Indoor unit stops to run and meanwhile
change outdoor operating mode as the same as that
of indoor unit, then the unit will go back to normal.
COOL mode doesn't conflict with DRY mode. FAN
mode doesn't conflict with any mode.
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