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2.3. Electrical equipment
2.3.1. Operation
2.3.1.1. Description
The appliance is furnished with integrated electronic control (Fuzzy Logic III).
Electronics include interior temperature control, cooling unit control, automatic
door control, automatic defrost as well as light control. The lighting unit
consists of 2 LED light sources, which, along with providing lighting of the
interior, also indicates the result of the self-test executed by the electronics
when voltage is applied to the appliance, but only when the door is open.
Appliances not fitted with light and those fitted with a reduced-capacity
motherboard do not indicate the result of the
self-test
: these appliances signal
error a few hours after switching on, indicated by the shutdown or non-
initiation of the cooling unit.
Lighting and door detection is controlled by an infrared sensor operated by the
door. Automatic door control cannot be provided for appliances without
lighting!
Temperature control of the internal container may not be performed manually.
2.3.1.2. Self-test
The built-in electronics execute a self-test when voltage is applied to the
appliance.
The system checks the condition of peripheral devices. The result is indicated
by the variation in the blinking of LEDs (0.5 Hz). Evaluation results are
contained in the following table:
After five blinks, the LEDs continue blinking at a higher frequency.
If the electronics do not indicate a failure (two blinks), then after two seconds it
applies voltage to the heating cartridge and normal controlled mode can start.
Appliances fitted with a reduced-capacity motherboard do not indicate the
result of the
self-test!
2. 3. 1. 3. Defrost
Defrost is performed automatically by the control mechanism as follows:
- It switches off after 39 hours from first initiation, defrosts for 2 hours, then
switches back on.
- After this, there is a 2-hour defrost period in every cycle after 22 hours of
operation.
Number of blinks
Error status
N=0
General error
N=1
Everything in order – control knob is not detected
N=2
Everything in order – control knob is not detected
N=3
NTC detection error (interior sensor)
N=4
NTC detection error (evaporator sensor)
N=5
NTC detection error (interior and evaporator sensor)
