SERVICE MANUAL
17
4.2.1 SAFETY HIGH PRESSURE SWITCH
When the pressure contact (P) trips, instantly, all outputs switch over to off position.
When it is closed again, there are two possibilities:
- Dip-switch 10 OFF. Manual reset. The machine remains stopped until reset to Initial start-up.
- Dip-switch 10 ON. Automatic reset. The machine check pressure switch status every 30 min. When
closed, the machine will continue at the position where it was.
* Signalling: Flashing LE1.
4.2.2 LONG HARVEST
If the harvest time is longer than 4 min. without activation of the curtain micro contact (MC), the harvest
is interrupted, switching over to the production cycle. If the same happens again at the next harvest, the
machine will stop.
* Signalling: Flashing in LE3.
4.2.3 ICE PRODUCTION CYCLE TIMEOUT
If during the production cycle, evaporator temperature probe has not reached the set temperature Tc in
more than 60 min, the machine will stop until reset.
* Signalling: Flashing in LE2.
4.2.4 FAULTY TEMPERATURE PROBE
If PCB detects that evaporator temperature probe is broken or unconnected, the machine will stop
* Signalling: Flashing in LE4.
Probe type is NTC and resistance value must be 10kΩ at 25°C.
4.3 PCB PUSH BUTTON FUNCTION
Function depends on the unit status:
- Start up timer: Finish initial delay y passes to ice production stage
- Ice production. Switches to harvest
- Harvest. Switches to Ice production
Wash cycle activation.
Keep pressed the button while switching on main front switch. Wash cycle is activated and only the
water recirculation pump is running. There is a maximum time for this cycle of 30 min. After this time,
pump stops.
Wash cycle is finished by switching off main power.
Read cleaning and sanitizing instructions for proper usage of this function.
