Figure 6-6: Circuit Test Path For F24 - Miele G1000 Technical Information

Technical Information
If An F24 fault is displayed
18 sec. after starting the drain sequence the electronic board 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 120 VAC is registered at ST5 on the
electronic board, then an F24 is logged in memory (see Fig. 6-6).

Figure 6-6: Circuit test path for F24.

1. Check the heater relay contacts to see if they have been fused together. Replace
if necessary.
2. Check for defects to the connecter at the output side of the heater relay.
Corrosion buildup can cause a bridge between contacts, which
reduce the transfer resistance below a value of 10 MΩ. This
done by performing the following steps:
a. Disconnect the appliance from power.
b. Pull Plug ST5 off the electronic board.
c. Measure the resistance between the connectors of the evaluation
d. If the measured resistance is below 10Ω, the heater partial wiring
If a F26 fault is displayed
If water enters the machine exceeding 194°F, the program is interrupted and the
drain pump is operated. The fault will be indicated on the display or via LEDs.
1. If the NTC temperature sensor has exceeded 194°F, check the heating relay to
see if its fused closed and replace if necessary.
2. If the NTC temperature sensor is providing inaccurate information, replace the
temperature sensor (5.4.19).
leads on the heater pressure switch, point 12 and 22, at the plug
ST5 of the electronic board.
harness has to be replaced.
G1000 / G2000 Dishwashers
216
can
check can be