Operation Manual
Special remarks
Troubleshooting
If overflow of drain water from the indoor unit occurs, stop the operation and contact your contractor.
If you smell or see white smoke coming from the unit, turn OFF the main power supply and contact
your installer.
1. If the trouble still remains even after checking the following, contact your installer and inform them
of the following items.
(1) Unit Model Name
(2) Content of Trouble
2. No Operation
Check whether the SET TEMP is set at the correct temperature.
CAUTION
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3 minutes protection after compressor stop
To protect compressor, it will be continue off for at least 3 minutes once it has stopped.
5 minutes protection
Cooling operation
Heating operation
nti-freezing function during cooling
When the temperature of the air from the indoor outlet is too low, the unit will run for some time under the
fan mode, to avoid frost or ice forming in the indoor heat exchanger.
Cold air prevention
Defrosting
Compressor must run 5 minutes at least once start running. In the 5 minutes, compressor will not stop even
the room temperature reaches the set point unless you use remote control switch to turn off the unit (all
indoor unit can be turned off by user).
The fan of the indoor unit will never stop running in cooling operation. It remains running even if the
compressor stops working.
Heating capacity depends on external factors as outdoor unit temperature. Heating capacity might decrease
if outdoor ambient temperature is too low.
In several minutes after the heating mode is started, the fan of the indoor unit will not run until the heat
exchanger of the indoor unit reaches a certain temperature in order to prevent cold draft.
When the outdoor temperature is too low, frost or ice may form in the outdoor heat exchanger, reducing
heating performance. When this happens, a defrosting system of the air conditioner will operate. At the same
time the fan in the indoor unit stops (or runs at a very low speed in some cases), to prevent cold draft. After
defrosting is over, the heating operation and fan speed restart.
Auto re-start from Power Break
When the power supply is recovered after power break, all preset are still effective and the air-conditioner
Purging of residue heated air
When stop the air conditioner in normal operation, the fan motor would run with low speed for a while to
blow out the residue heated air.
will run according to the previous setting.
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AUV-18HR4SSA1
AUV-24HR4SFA1
AUV-36HR6SDB1
AUV-48HR6SEC1
AUV-60HR6SPC1
RPFC-2.0UNZ1NH
RPFC-3.0UNZ1NH
RPFC-4.0UNZ1NH
RPFC-6.0UNZ1NH
RPFC-6.5UNZ1NH
YFGN18BZNRZUH1
YFGN24BZNRZUH1
YFGN36BZMRZUH1
YFGN48BZMRZUH1
YFGN55BZMRZUH1
RAS-2.0UNZGNH1
RAS-3.0UNZGNH1
RAS-4.0UNZGMH1
RAS-6.0UNZGMH1
RAS-6.5UNZGMH1
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Blowing out the surviwal heating air
When stoping the air conditioner in normal operation, the fan motor would run with low speed for a while to blow
out the residual heating air.
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