Hyundai HSH-121NBE, Service Manual

Page: 128 / 259

In the following situations, please handle it according to the following methods, if
it does not work, please contact service centre and inform the failure
. details
The wind
blowing
out,but the
cooling/
heating
effect is
inefficient
The wind
blowing
out,but it
does not
refrigerate
Failure
Start-up
failure
The air inlet or outlet of machine is blocked
The air inlet or outlet of machine is blocked
Compressor has three min tes protection u
It does not reach the set time for start up
Mistakes in temperature setting
The air filter is blocked by dust
The doors or windows are open
Mistakes in temperature setting
The power switch is released
The battery is exhausted
Power supply failure
The fuse is burnt
Causes
Wait for the recovery of power supply
Wait or eliminate the original setting
Remove the obstruction, then restart it
Set a proper temperature, see the
methods of application
Close the doors and windows
Set a proper temperature
Remove the obstruction
Switch on the power
Replace the battery
Clean the air filter
Replace the fuse
Wait
Methods of resolution
The normal protections of the air-conditioner
1.Compressor protection
The compressor do not restart after stop operating in 3 minutes.
the heating operation just starts frost dissolving operation
operating under low temperature
Cold wind prevention (heat pump type )
Non-air-conditioner problem
In the heating mode, the indoor unit will not send wind or operate in low wind ,if the heat
exchanger of indoor unit has not reached the stipulated temperature in the following
three states, so as to prevent the cold wind.
Frost dissolving operation (hot pump type )
The fan of the indoor and outdoor unit will stop under frost dissolving operation.
The time for frost dissolving varies in range of 4 to 10 minutes according to the out-
door temperature and the frost condition.
It is normal phenomenon that there may be steam coming out from the outdoor unit
during the frost dissolving operation.
When the temperature is low and humidity is high outdoors, the heat exchanger of
outdoor unit may frost, which may decrease the heating capacity. In such case, the air-
conditioner will stop the heating operation and convert to automatic frost dissolving,
and then resume heating after the frost dissolving finishes.
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