Troubleshooting
12-7Samsung Electronics
12-2-6 In case of heating at the cooling mode or cooling at the heating mode
1. Troubleshooting procedure
No
No
No
Yes
Yes
Yes
OK
No
Change the setting temperature of
remote control.
Yes
Is the Thermo off?
Operate it with a heating mode
as soon as the defrosting is finished.
Yes
Is the unit
in the defrosting operation?
Turn the SW On.
No
Attach the
sensor correctly.
Over shortage
of the refrigerant
No
Yes
Yes
Is much frost
in the heat exchanger?
Is the
outdoor air sensor and
outdoor heat exchanger attached
correctly?
Connect the connecter
correctly.
No
No
Does the
4-WAY valve operate
normally?
Is the
4-WAY valve connector
connected correctly?
4-WAY valve coil error
NG
Exchange
the outdoor PCB.
4-WAY valve main body errorGo to the next page
No
Dose the
voltage of AC 220V
apply to the connector of 4-WAY
valve coil during the
operation?
After 3 minutes, cooling
and heating start automatically.
Yes
Check the resistance value
of 4-WAY valve coil.
Is the compressor
in 3 minutes off?
Indoor operation SW is on.
24437A(1)_1 1/16/05 9:58 PM Page 12-7
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