Fault Code F24: Heater Relay Contact; Figure 080-9: Circuit Test Path For F24 - Miele G 4205 Technical Information

G 5xxx
Circulation pump M6 is now activated for 2 minutes in order to wet the
dishes in the dishwasher and to fill any spaces with water. Drain pump
M8 is then activated for one minute. This creates a measurement basis
for the actual test.
During the test, water inlet valve Y63 is activated until a defined number
of pulses corresponding to a water volume of approximately 0.37 gallons
(1.4 liters) is reached. Circulation pump M6 is then activated once more.
b. The program continues to run without interruption. The maximum water
intake time is extended to 4 minutes. This time value is saved by the
electronic for future water intake. For future water intakes, if the time
needed for 0.26 gallons to flow into the machine differs by 15 percent, a
new test routine flow will be started.
c. If heater pressure switch B1/13 is activated, the program is interrupted
immediately, the drain pump is operated, and fault F19 is registered.
Cause:
Flow meter defective.
Remedy:
Replace the water diverter. See Section 050-4.12.
Fault F19 will be displayed if the check to test the sluggish movement of the
flow meter (impeller counter) during the water intake is not successful.
3.18

Fault Code F24: Heater Relay Contact

Symptom:
The program is interrupted and the drain pump is operated.
Background information:

Figure 080-9: Circuit Test Path for F24

18 seconds after starting the drain sequence, the electronic will perform an
operational test on the heater relay. The circulation pump is not operating
and no power is applied to the heater relay coil. If 120VAC is registered at
ST5 on the electronic board, then an F24 is logged in memory (see Figure
080-9). When the circulation pump is not operating, the heater relay contacts
are checked. If supply voltage is then applied to the electronic's inputs, the
fault is registered.
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Technical Information