TROUBLESHOOTING
ALARM CODES
The list of alarm codes, the relevant messages displayed and RESET modes, are indicated in
the following table:
ERRORS (CATEGORY A)
Micro-switch state inconsistent with
door state
3 (in cycle)
2 (stand-by)
RESIN REGENERATION
PROBLEM
Lack of water flow from brine to resins
during regeneration phase
Electronic system ADC error
3 (in cycle)
2 (stand-by)
REFERENCE HEATING
ELEMENT FAULT
Reference heating element acquisition
chain fault.
3 (in cycle)
2 (stand-by)
REFERENCE HEATING
ELEMENT FAULT
Reference heating element acquisition
chain fault.
3 (in cycle)
2 (stand-by)
REFERENCE HEATING
ELEMENT FAULT
Reference heating element acquisition
chain fault.
3 (in cycle)
2 (stand-by)
REFERENCE HEATING
ELEMENT FAULT
Reference heating element acquisition
chain fault.
3 (in cycle)
2 (stand-by)
REFERENCE HEATING
ELEMENT FAULT
Reference heating element acquisition
chain fault.
3 (in cycle)
2 (stand-by)
REFERENCE HEATING
ELEMENT FAULT
Reference heating element acquisition
chain fault.
3 (in cycle)
2 (stand-by)
Water flow rate problem during water
filling
Water presence above the foreseen
maximum level.
Water filling time over the maximum
limit.
Water filling time over the minimum
limit.
"Aquastop" solenoid valve (EV3)
malfunction
Presence of water in the chamber
when not required or level sensor fault.
Temperature sensor PT1 failed.
3 (in cycle)
2 (stand-by)
Temperature sensor PT2 failed.
3 (in cycle)
2 (stand-by)
Temperature sensor PT3 failed
3 (in cycle)
2 (stand-by)
Pressure sensor for detection of water
level in the chamber failed.
3 (in cycle)
2 (stand-by)
Temperature sensor PT1 short-
circuited.
3 (in cycle)
2 (stand-by)
Temperature sensor PT2 short-
circuited.
3 (in cycle)
2 (stand-by)
Temperature sensor PT3 short-
circuited
3 (in cycle)
2 (stand-by)
Pressure sensor for detection of water
level short-circuited
3 (in cycle)
2 (stand-by)
Lack of water heating in the
recirculation system or recirculation
pump failed.
The fan does not work properly or the
filter is clogged.
It indicates the lack of HEPA filter.
Drying heater malfunction