Miele DW | G6620SC | Inlet/drain & Rinse aid LED’s

[neon_3SP_glow]

Hello.

Miele Dishwasher,
G6620SC,
64/103838702.

Customer complains roughly three minutes after initiating program, the machine stopped and both the ‘inlet/drain’ LED & ‘Rinse aid’ LED were lit.

No Fxx Code were displayed in the display.

Upon visit, everything worked fine, the machine filled, ran the wash motor, opened the tablet dispenser and heated. Draining also fine.

I’ve left it with them to contact me again if the issue reoccurs.

Wondered if anyone had any ideas on the LED’s meaning, despite not showing a F code.

Many thanks.

[neon_3SP_glow]

Customer now says they have F78 error.

[electrofix]

well google search brings up possible blocked impeller

dave

[neon_3SP_glow]

Thanks Dave.

Makes sense as if heating pressure switch doesn’t clock, machine presumes no water inlet fault.

Now here to take another look.

[neon_3SP_glow]

No debris in circulation pump impeller (I’ve had them blocked with plastic wrappers cause F78).

No signs of damage or leak on heater pressure switch.

However, the baskets are starting to corroded and break up, I’m presuming bits of the basket metal are in the system and jamming the circulation pump.

Can’t confirm though, as I’ve never seen the machine fault. It only ever happens after I leave!

Or, heat pressure switch on its way out. Hard to replace it though without being certain.

Grrr.

[Author]

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