Fault Code F52: Heater Pressure Switch Has Reset During Heating - Miele G 1 Series Technical Information

G 1xxx/G 2xxx
Cause:
Heater relay solenoid defective.
Remedy:
Replace the heater relay.
Cause:
Connection from heater relay to electronic is open-circuited.
Remedy:
1. Check plug connections. Ensure that all plug connections are clean and
secure.
2. Check the connection wires for continuity.
Cause:
Heater pressure switch open- or short-circuited.
Remedy:
1. Ensure that the heater pressure switch is in positions 21/22 and 11/12. If
not, perform the following checks:
a. Ensure that all plug connections are clean and secure.
b. Check the connection wires for continuity.
c. Remove the heater pressure switch and check for any blockages.
2. If the heater pressure switch still shows an open circuit, replace it.
Cause:
Foreign objects in heater pressure switch.
Remedy:
Replace the heater pressure switch. See Section 050-4.20.
3.30 Fault Code F52: Heater Pressure Switch Has Reset During
Heating
Symptom:
The program continues from the wash block in which the fault is registered
without the heater being activated.
In some models, the fault will only be indicated when the fault memory is
checked in service mode.
See Table 080-3 for other model-specific fault indications.
Additional information for software ID -818:
If fault code F52 appears on machines with software ID -818 (i.e. production
index 31), run the update "Adjustment of rinse process at F52", mat. no.
06514290.
If after the update fault code F52 appears again, install a new heater
pressure switch with modified switching point (mat. no. 06190702).
This heater pressure switch was installed as standard starting with
production number 64768135.
Cause:
Excess quantity of detergent or rinse aid dispensed. Excess foam has
developed.
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Technical Information