The foams at the two sides of evaporator are lost or damaged. Replace the foams.
The temperature sensor is failed.
The compressor operates continuously & independent from the set temperature.
At the same time the condenser fan motor does not operate. The POWER PCB has
been failed and replace the POWER PCB.
NOTE: Before starting the services as above, please unplug the appliance and open the
door for more than 24 hours to let the ice on the evaporator melt completely.
8.4.12 HOT PIPE DIAGNOSTIC TEST
1. Isolate the hot pipe from remainder of sealed system.
2. Cap or seal one end of the hot pipe (braze or use process adaptor and cap).
3. Attach process adaptor to open end of hot pipe.
4. Attach compound gauge and vacuum pump to the hot pipe.
5. Pull a vacuum and close valve to test for leak in the hot pipe.
6. If unit holds a vacuum, no leak is indicated. Reconnect the hot pipe to the system, replace
the drier and recharge the system to specifications.
A VACUUM WILL BE MAINTAINED IF THE SYSTEM IS GOOD.
8.4.13 SOLENOID VALVE
If the left/upper zone of the double door model is too low temperature or freezing instead
that the right/lower zone of the model is not cooling
, pls check the solenoid valve as below:
-
Dismantle the POWER PCB box.
-
Connect the solenoid valve directly to the external power.
-
Connect the solenoid valve and unit to the power at the same time and separately.
-
If the right/lower zone of the unit is cooling, that means the solenoid valve is correct. Pls
replace the POWER PCB. Otherwise replace the solenoid valve.
8.4.14 DSIPLAY “E0”
“E0” indicates the communication error between Upper and Lower Control Unit for 3
temperature zone.
It may be caused by the following reasons:
-
The Control PCB is failed. – Replace the Control PCB.
-
The connecting wire is failed such as the screw has made the wires open circuit. –
Reroute a new wire.
8.4.15 DSIPLAY “E1”
“E1” indicates the corresponding air temperature sensor is open circuit.
It may be caused
by the following reasons:
-
The temperature sensor is failed. – Replace the thermistor.
-
The Power PCB is failed. – Replace the Power PCB.
-
The Control PCB is failed. – Replace the Control PCB.
-
The temperature sensor wire is loosed out of the terminal on the Power PCB. – Plug in.
-
The sensor wire is not connected with the internal wire. – Connect well.
-
The connecting wire is failed such as the screw has made the wires open circuit. –
Reroute a new wire.
8.4.16 DSIPLAY “E2”
