Hisense Group KFR 25GWE - Manual (Page 17)

15
Special Remarks
Heating ( ) Operation
Heating performance
Defrosting
POWER lamp
Because this air conditioner heats a room by drawing on the heat of the outside air
(heat pump system), the heating efficiency will fall off when the outdoor temperature
is very low. If sufficient heat cannot be obtained with this air conditioner, use another
heating appliance in conjunction with it.
When the outdoor temperature is low, frost or ice may from in the heat exchanger
coil, reducing heating performance. When this happens, a microcomputer defrosting
system will operate. At the same time the fan on the indoor unit stops ( or runs at
very low speed in some cases). Heating operation restarts after several minutes.
(This interval will vary slightly depending upon the outdoor temperature and the way
in which frost forms).
For several minutes after the start of heating operation, the indoor fan will not start
running until the indoor heat exchanger coil has warmed up sufficiently. This is
because the COLD DRAFT PREVENTION SYSTEM is operating.
The POWER lamp also remains lit during defrosting or when the compressor has
been turned off by the thermostat when the system is in the heating mode.
In the event of power failure, the unit will stop. When the power is resumed,
the unit will restart automatically after three minutes.
In heating or cooling operation. Some plastic parts may expand of shrink due to a
sudden temperature change. In this event, a clicking sound may occur. This is normal,
and the sound will soon disappear.
The remote control unit sends the temperature signal to the air conditioner regularly
at three-minute intervals. If the signal from the remote control unit stops for more
than ten minutes due to the loss of the remote control unit or other trouble, the air
conditioner will switch to the temperature sensor which is built into the indoor unit
and control the room temperature. In these cases, the temperature around the
remote control unit may differ from the temperature detected at the air conditioner s
position.
Power failure
during operation
Clicking Sound
Clicking sound is
heard from the air
conditioner