f51
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Miele · Dishwashers
Heater pressure switch fault at programme start
Quick Answer
Error code F51 on your Miele Dishwashers means: Heater pressure switch fault at programme start. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Turn off the dishwasher and disconnect from power.
2
This fault occurs one second after programme start when the heater relay activates.
3
A technician must test the heater pressure switch contacts and relay.
4
Replace the pressure switch or relay as diagnosed.
Pro Tip
This issue typically requires professional diagnosis. Attempting this fix without proper training could cause further problems.
Parts You May Need
Heater pressure switch
Heater relay K1/1
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