Alarms; How To Order Spare Parts - Techno Block AT series Use And Maintenance Instructions

ATTENTION
Do not use either hot water or any pointed, cutting, metal objects to remove ice blocks.
Unsatisfactory efficiency of the unit:
If no defects are found in the unit check that: cold room doors are perfectly tight; there is no cold
dispersion; the cold room is used wisely; no unfrozen liquids or foodstuffs are placed in the low temperature
room; the evaporator is ice-free.
We recommend installation of the machines far from the doors especially when the cold room is expected to be
opened many times a day.
WARNING:
Removal of protections during machine operation is absolutely forbidden. They have been
developed to safeguard the operator's safety.

12.4 Alarms

Label
P1
P2
CA
dA

13 How to order spare parts

When ordering spare parts make reference to the number written on the unit plate.
WARNING
Worn parts should be replaced only by qualified personnel or by the manufacturer.
increase defrost termination temperature by some degrees, increase number of
defrosts.
3. Display does not light up. Check:
- if there is power to the unit;
- if mains cable is connected properly;
- fuses inside the electric panel
Failure
Environment probe
(Pb1)
End of de-frosting
probe
(Pb2)
HIGH/LOW pressure
alarm
Door open
Cause
• values outside the
operation range
• failed / shortcircuited /
open probe
• values outside the
operation range
• failed / shortcircuited /
open probe
• Overcoming of the
High/Low pressure value,
read by the corresponding
pressure switches (it is
over the highest allowed
differential value ).
Problem resolution
• check the type of probe
(NTC)
• check the wiring of probes
• replace the probe
• check the type of probe
(NTC)
• check the wiring of probes
• replace the probe
• Check the pressure switch
efficiency.
•
Check if the condenser is clean or if the
condenser fan is correctly working.
•
check if the coldroom has
the door open, its seal,
introduction of hot product
etc.
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