Product specifications

Samsung Electronics 4-14

4-5-5 In case of heating at the cooling mode or cooling at the heating mode

1. Troubleshooting procedure

Yes

Is the Thermo off?

Is the unit in the defrosting

operation?

Is the compressorin 3 minutes off?

Is much frostin the indoor

heat exchanger?

Does the 4-WAY valve

operate normally?

Is the outdoor air sensor and

outdoor heat exchanger

attachedcorrectly?

Is the 4-WAY valve

connectorconnected

correctly?

Dose thevoltage of

AC220V apply to the

connector of

4-WAY valve coil during

the operation?

Change the setting temperature of remote control

Check Inner wiring of outdoor unit.

After 3 minutes, coolingand heating start automatically

Attach the sensor correctly

Connect the connecter

correctly

Over shortage of the

refrigerant

4-WAY valve coil error

Exchangethe outdoor PCB

Check the resistance value of 4-WAY

valve coil

4-WAY valve main body errorGo to the next page

Yes