Miele CM6 - F2 - Open Circuit in Heater NTC; F10 - No Water Flow

Technical Information
22
CM6
3.2 F2 - Open Circuit in Heater NTC (R30-14)
Symptom:
Electronic registering an NTC temperature < -10°C or resistance is > approx. 600kΩ.
Cause:
Ambient temperature below 10°C for a long period of time.
With ambient temperatures less than 10°C, the resistance of the temperature sensor
increases to a value that is registered as an open circuit by the electronic module.
Remedy:
The ambient temperature must be greater than 15°C for a long period of time and the
appliance can then be used normally. Replacing the electronic module or temperature
sensor will not provide a remedy.
Cause:
NTC open-circuited.
Remedy:
1. Check the NTC wiring.
2. Test the NTC in service mode; see Section 001-4.4.
Note:
NTC resistance values should be
 100kΩ at 25°C (77°F),
 5.5kΩ at 100°C (212°F) and
 1kΩ at 160°C (320°F).
3. Check the NTC resistance at different temperatures and compare to the
values given above.
4. Replace NTC wiring, if necessary.
5. Replace the NTC, if necessary; see Section 001-4.20.
3.3 F10 - No Water Flow
Symptom:
The flow meter (B3-4) is not delivering any pulses within a 5-second interval.
Cause:
Water tank incorrectly inserted.
Remedy:
Insert the water tank correctly.
Cause:
Appliance has stood for too long. Water pump has run dry.
Remedy:
1. Remove the water tank.
2. Push the pressure pump (mat. no. 07994080) together and fill it with
water. See Figure 001-19.