Wolf Oven Error Code E66
Water system level detector pin with low resistance only after refilling (occurring at least 6 times consecutively) when it has been a while since last descaling - boiler scaled up.
SourceWolf Convection Steam Oven - Full Service Manual (CSO24)p. 5-6
The full E66 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
SourceWolf Original: Prior to Serial 13508346: Service Manualp. 5-6
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Where this code is documented
9 manuals in the MyPros+ library document this code for Wolf oven.
Models covered by the manuals that document this code
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