Re: Miele G1222SC – F51 error code
Heater relay faulty or heater (high pressure) pressure switch not made because of wash pump impellor blockage more likely on an F51.
F51,
One second after the program starts, 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.
Cause:
Heater relay defective; contact open.
Remedy:
Replace the heater relay.
Cause:
Heater relay solenoid defective.
Remedy:
Replace the heater relay.
Cause:
Connection from heater relay to electronic module open-circuited.
Remedy:
1. Check plug connections.
2. Check the connection wires for continuity.
Cause:
Heater pressure switch open- or short-circuited.
Remedy:
Replace the heater pressure switch.
Cause:
Connection from heater pressure switch to electronic open-circuited.
Remedy:
1. Check plug connections.
2. Check the connection wires for continuity.
Cause:
Foreign objects in heater pressure switch.
Remedy:
Replace the heater pressure switch