FRIULINOX ALI GROUP S.R.L. A SOCIO UNICO
80
Translation of the original instructions
Via Treviso 4, 33083 Taiedo di Chions (PN) - Italy
Service
M
an
u
al
10.2.
Malfunctions not managed by alarms
10.2.1.
The compressor does not work during the cooling cycle
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1.
If the cell temperature is lower than the working setpoint foreseen by the selected cycle
phase, the compressor will not work. On display the symbol that indicates compressor
operation off
→
see card functions
2.
Make sure that the B1 cell probe reads the correct temperature. If the probe reads a value lower
than the actual temperature in the cell, depending on the type of selected cooling, the compressor
operation may not be necessary
To verify the correct reading of the probe, access the electronic card where the “B1” cell probe is connected
With multimeter set in Ω, check that the resistive value of the probe matches
the temperature in the surrounding environment (see tab. PTC)
If the resistive value is incorrect or unstable, replace the probe
3.
Check that the parameters managing the compressor - Conf39/40/41 e 42, Conf69 - are
correct
4.
Access the electrical system and remove the screws from the
rear protection grid to access the compressor
Check all electrical connections to make sure that there are no false contacts
Start the timed -18°C cooling cycle with cell empty
Make sure that after the minimum OFF-ON time, parameter Conf40, the
symbol indicating compressor operation appears steady on the display
With cycle in progress, check that the compressor is powered
→
see wiring diagram
If there is no power supply on the compressor but the condenser fans work (they are connected
in parallel), check that the “Q1” relay for the single
-
phase models or the contactor “K1” and the
circuit breaker “Y1” for the three
-phase models, give consent to the compressor
If “Q1”/”K1” and “Y1” do not consent to compressor operation, replace the faulty component
If the circuit breaker Y1 trips, the “
Compressor thermal alarm
” (only for models that require it) appears on the
display - however, the protection contacts may be mechanically damaged and not supply power to the
compressor - check the presence of the 3 output phases
If “Q1”/”K1” and “Y1” give consent and voltage reaches the compressor, replace the compressor
When replacing the compressor, always replace the dehydrator filter also
If the condenser fans do not work either, check that the potential free contact on the electronic
card that manages the compressor, terminals A4|A5, is closed
→
see wiring diagram
Position the multimeter leads between terminals A4|A5 - if with cycle started for a few minutes
reading is 230V, it means that the contact is open
→
replace the electronic card