Samsung Electronics
12-7
12-2-6 In case of heating at the cooling mode or cooling at the heating mode
1. Troubleshooting procedure
Check the resistance value
of 4-WAY valve coil.
Go to the next page
4-WAY valve main body error
Change the setting temperature of
remote control.
Operate it with a heating mode
as soon as the defrosting is finished.
After 3 minutes, cooling
and heating start automatically.
Turn the SW On.
Attach the
sensor correctly.
Over shortage
of the refrigerant
Connect the connecter
correctly.
4-WAY valve coil error
Exchange
the outdoor PCB.
No
No
No
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
OK
Yes
No
No
No
NG
No
Is the Thermo off?
Is the unit
in the defrosting operation?
Is the compressor
in 3 minutes off?
Indoor operation SW is on.
Is much frost
in the heat exchanger?
Does the
4-WAY valve operate
normally?
Is the
outdoor air sensor and
outdoor heat exchanger attached
correctly?
Is the
4-WAY valve connector
connected correctly?
Dose the
voltage of AC 220V
apply to the connector of 4-WAY
valve coil during the
operation?
Troubleshooting
24867A(1)_TH026EAV_1.indd 7
2006-04-03 ｿﾀﾀ・9:49:21
