17
▲
Unstable temperatures inside the cabinet.
The unstable temperature is caused by the evaporator fans cease, and it can be check by the below method: When
the compressor is running, the light
“
Run
”
is on, the fan should be running, if the fan stop, check the whether is any
fault in the fan or fan connection. If the fan is broken, replace it with the fan of the same model.
(Fig.22)
▲
PCB system
’
s default.
○
The differences between the new and old version PCB board.
There are new and old versions of PCB board
(Fig.7 )
in the dual temperature series wine cooler. The differences is
the new PCB board add the sensor X11 socket, and exchange the X10 socket in the refrigerator sensor and the X1
socket. If the old PCB board is broken, we should change the electrical box and PCB board.Please refer to the old
structure
’
s dismantlement
(Page 4).
○
Fault finding by self-check mode.
This series wine cellar has a computerized controller with built in self-check function. Start the self-check
mode as follows:
1>. Press and hold
“
Set lower
”
and
“
Set upper
”
button with power on. 2 beeps will sound, and then
the controller will start the self-check function,
2>. If everything is operating correctly,
a.
No response when pressing buttons.
b.
LED only display 20
℃
if ambient temperature is over 20
℃
, and display actual temperature if ambient
temperature is lower than 20
℃
.
c.
The compressor works and the
“
RUN
”
indicator light are on all the time.
d.
If the cooler has condenser and evaporator fans they should work at full speed; Heater and air
cycling fans should work for 30 seconds alternately.
e.
The switch controls the light functions normally.
3>.If the situation fit for
a~e statement, the spear parts are normal, i
f the various components of the unit do
not respond as above, check the faulty part and relevant connection. If replace the part does not cure
the fault, replace the control board. see.
(
→
4)
4>. To return the control panel to its normal working mode unplug the unit and plug it in again
5>. Only the new version control panel has a self-check mode.
○
Sensor default
1>. The LED temperature display should the actual ambient temperature shortly after the unit is
plugged in, if not,take the electrical box apart see
(Page 6)
, check if
the sensor plug is connected
properly, if the connections are good and the fault persists replace the sensor.
2>. If the LED displays
“
E1
”
indicates a freezing compartment sensor open circuit fault and the
sensor should be replaced see
(Page 18)
3>. If the LED displays
“
E2
”
indicates a freezing compartment sensor short circuit fault and the
sensor should be replaced see
(Page 18).
4>. If the LED displays
“
E3
”
indicates an evaporator sensor open circuit fault and the sensor
should be replaced see
(Page 18).
5>. If the LED displays
“
E4
”
indicates an evaporator sensor short circuit fault and the sensor
should be replaced see
(Page 18).
6>. If the LED displays
“
E7
”
indicates a refrigeration compartment sensor open circuit fault
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