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Technical Information
86
G 5xxx
Using the pressure switch contacts, heating is controlled via 2 poles. The
heating is switched via a heater relay located before the pressure switch
contacts in the circuit. Heater activation occurs during the wash and final
rinse cycles.
If the circulation pump and heater relay are activated and the pressure switch
reset contact is open, the control registers a water intake fault (see
Fault
Code F14
, Section 080-3.14).
Figure 050-12:
Heater Pressure Switch
2.14
NTC Temperature Sensor R30
Temperature sensor R30 (NTC resistor) is located in the bottom area of the
sump. The electronic constantly monitors the current wash water temperature
via the resistance of this sensor.
If the maximum safety temperature of 194°F at the NTC sensor is
exceeded, the program is interrupted (boiling prevention) and fault code
F26
is registered; see
Fault Code F26
, Section 080-3.20.
If the sensor or its connections are open- or short-circuited, the heating is
switched off. The program then continues to the end without heating or
dispensing; see
Fault Code F01
, Section 080-3.9 (NTC short-circuited),
or
Fault Code F02
, Section 080-3.10 (NTC open-circuited).
If, during heating, the desired temperature is not reached in the given
time, a fault is registered; see
Fault Code F25
, Section 080-3.19.
1
Heater relay
2
Heater pressure switch
3
Heater element
4
Electronic
Summary of Contents for Classic G 4205
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