Dulas VC150SDD, Инструкция по установке и руководство техника

Страница: 38 / 47

VC150SDD Installation & Technician’s Manual
Page 38 of 47
The following checklist should be used to check that the SDD controller is working. If any of the
tests fail the controller should be replaced.
Test What to do if the test fails
1 Check that the controller passes power to the
compressor and capacitor.
Measure the PV voltage on connector J1. Measure the
voltage on the capacitor and compressor power
terminals on J1. These two should be no less than 0.5V
smaller than the PV voltage.
Replace the controller
2 Check that the controller is basically working.
Once the PV and compressor have been checked.
(Section 2 and 3). Normal operation of the control circuit
can be assessed:
Connect the PV and switch on. Open the refrigerator lid,
remove the basket and warm the temperature sensors
with your hand. Check that the compressor has started
and the Green LED on the front of the refrigerator is ON.
Temporarily disconnect J3. The compressor should stop
and the LED should be OFF.
Replace the control board.
3 Check that the thermostat is set to the correct
temperature
.
There is no adjustment of the thermostat temperature
but it can be checked as follows:
Run the refrigerator and wait until the compressor stops
running. Don’t open the cabinet lid. The temperature on
the display on the front of the refrigerator should be
between 2.5 and 4.0C
The thermostat has been factory
set to ensure the correct
operation of the fridge over a very
wide range of operating
conditions.
If the compressor is not being
turned on or off at the right
temperature the control board
should be replaced.
The freezer thermostat.
There is one freezer temperature probe. The control board acts as a thermostat for both the fridge
and freezer. The fridge compressor always has priority over the freezer. For example, at the start
of the day when the solar power is small the fridge will run, but the freezer will remain off until
more solar power is available, in which case both the fridge and freezer compressors will run.
If the fridge is at the required temperature and the fridge compressor does not need to run the
freezer compressor takes priority until the fridge compressor is required to run.