Modular HT 52 Serie Installation-Emploi-Entretien page 25

Alarm 12
Cold rinse
All alarms are " blocking " , the machine stops its
normal operation until the cancellation of the alarm
that can be done by turning off the machine, the
entrance into stand-by or starting a new cycle
If the alarm condition persists, the machine will
return under alarm and goes immediately blocked.
Tank overflow alarms (AL 07) and timeout heating
boiler (AL 03) are deleted automatically after the
condition that caused the alarm.
BY SETTING THE SWITCHER INTO THE ON POSITION
THE MACHINE DOES NOT START
Possible causes:
- There is no voltage in the electrical system;
The main switch is disconnected or the corresponding
-
fuses are burned-out;
- The machine connecting cable may be interrupted;
The conductors in the control panel terminal board
-
may be loosened;
- The machine line switch is inefficient;
- The conductor contacts are inefficient;
- Micro door may be faulty;
- Electronic board;
- User interface;
WATER DOES NOT ENTER IN THE DISHWASHER
Possible causes:
There is no water in the water system or the tap is
-
closed;
- The supply pipe may be bent or compressed;
- The filter of the solenoid valve may be dirty;
- The coil of the solenoid valve may be broken;
The small piston of the solenoid valve may be
-
blocked.
- Circuit connections may be faulty;
In a washing
cycle is
delayed
rinsing
because of
the boiler
temperature
to below that
AL 12 desired, up to
a maximum
time. The
cycle is
completed,
however,
with pauses
and cold
rinse.
- The pressure switch is faulty.
- Electronic board;
- Micro door may be faulty;
WATER KEEPS ENTERING IN THE DISHWASHER
Possible causes:
- The solenoid valve is dirty;
- The membrane is torn;
- The small piston does not move into its housing.
Loose connection between small tube and pressure
-
switch;
- The air trap or the small tube are pierced;
There is water in the pressure switch or in the air
-
supply tube;
- Loss of pressure in the pressure switch;
- The pressure switch is faulty.
- Electronic board;
WATER DOES NOT HEAT UP (TRI-PHASE MACHINE)
Possible causes:
- A phase is missing from the relay coil;
- The relay coil may be interrupted;
- The pressure switch contact may be faulty;
- The contactor's connections are worn out;
- The connections or conductors may be faulty;
- There is one phase missing;
- The boiler heating element may be damaged;
The connection between the terminals and the
-
heating element is incorrect;
- The bowl heating element may be damaged.
- The connections or conductors may be inefficient;
- The temperature probes are defective;
- Electronic board;
WATER OVERHEATS
Possible causes:
The contacts in the boiler and/or bowl thermostat are
-
locked in the "Closed" position.
The relay has remained in the "Closed position", even
-
though voltage is supplied to the coil.
- Electronic board;
THE ELECTRIC WASHING PUMP IS FAULTY
Possible causes:
- The thermal protection is disconnected;
- Micro door may be faulty;
- Electronic board;
- The condenser is faulty:
- The motor winding is faulty.
The rotor does not rotate properly and absorption
-
exceeds the nominal values;
- The motor rotor is blocked;
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