Samsung EH035CAV Service Manual page 132

12-2-5 In case of heating at the cooling mode or cooling at the heating mode
1. Troubleshooting procedure
in the defrosting operation?
Samsung Electronics
141 Kinderkamack Rd, Park Ridge, NJ 07656 Tel: 201-782-1782 Fax: 201-782-1783 Web: www.amgair.com Email: info@amgair.com
Is the Thermo off?
No
Is the unit
No
Is the compressor
in 3 minutes off?
No
Is much frost
Yes
in the indoor heat
exchanger?
No
Does the
No
4-WAY valve operate
normally?
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Yes
Yes
Yes
Is the
outdoor air sensor and
outdoor heat exchanger attached
correctly?
Is the
4-WAY valve connector
connected correctly?
Yes
Check the resistance value
of 4-WAY valve coil.
OK
Dose the
voltage of AC 220V
apply to the connector of 4-WAY
valve coil during the
operation?
Yes
4-WAY valve main body error
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Troubleshooting
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.
No
Attach the
sensor correctly.
Yes
Over shortage
of the refrigerant
No
Connect the connecter
correctly.
NG
4-WAY valve coil error
No
Exchange
the outdoor PCB.
12-6