Fault Code F51: Heater Pressure Switch; Figure 080-12: Circuit Test Path For F51 (Initial State); Figure 080-13: Circuit Test Path For F51 (Testing State) - Miele G 1 Series Technical Information

Technical Information
3.29

Fault Code F51: Heater Pressure Switch

Symptom:
The program is interrupted and the drain pump is operated.
See Table 080-3 for model-specific fault indications.
Background information:
Start position:

Figure 080-12: Circuit Test Path for F51 (Initial State)

One second after program start, heater relay K1/1 is activated. This enables
a check as to whether the contacts on heater pressure switch B1/13 have
closed on switching steps 21/22 or 11/12. See Figure 080-13. If the electronic
receives no power, an F51 fault is stored.

Figure 080-13: Circuit Test Path for F51 (Testing State)

Cause:
Heater relay defective; contact open.
Remedy:
Replace the heater relay.
154
G 1xxx/G 2xxx