Vaillant condenser boiler

[peteday]

getting F23 occasionally & not turning on for afternoon timed session although comes on in morning. Any experts got tips for my plumber who has not traced a fault so far (Vaillant not his ouevre)?

 

[Reg Man]

F23 = low water pressure in system, or temperature range to wide. Caused by obstructed pump, pump not running at capacity, air in the appliance, system pressure to low, Flow and back flow NTC reversed.

 

[Gas]

I think you mean Forte not Oeuvre:wink_smile:. This should be a simple fix for him, if it isn't, i suggest you get someone else.

 

[AMGasServices]

Is he a plumber or a gas man ?

 

[dancinplumba]

Thought f 29 was low system pressure

 

[Ermintrude]

F29 on an ecotec pro is earth or gas fault. Check your manual.

 

[SafeGasInstall]

Needs more water in ch system

 

[stevetheplumber]

id start with a water sensor especially if its still got the red one fitted

 

[Chalked]

Two this week.
Water pressure sensor. Sensing 1.6 bar when empty. Not sensing pump flow.
as anyone tried cleaning these sensors with any success?

 

[Leo21]

Two this week.
Water pressure sensor. Sensing 1.6 bar when empty. Not sensing pump flow.
as anyone tried cleaning these sensors with any success?

Yes, but only temp fix, I thought f75 was low pressure and pump not lifting pressure.

 

[dancinplumba]

F29 on an ecotec pro is earth or gas fault. Check your manual.

Nah, can't be bothered

 

[dancinplumba]

Yes, but only temp fix, I thought f75 was low pressure and pump not lifting pressure.

That's the one

 

[Chalked]

Yes, but only temp fix, I thought f75 was low pressure and pump not lifting pressure.

Thats what I meant. Pressure sensor gets blocked, then doesn't sense pump flow ( pressure increase). Then f75

 

[Ermintrude]

Nah, can't be bothered

Didn't mean u me old fruity ! Where ave u been ?

F75 is the little kit jobby to fix.

 

[Leo21]

Didn't mean u me old fruity ! Where ave u been ?

F75 is the little kit jobby to fix.

So,what's f23 then, never had this before.

 

[Ermintrude]

Pumps blocked massive difference in flow and return. (Or thermister popper - uncommon) or she's dry.

 

[dancinplumba]

Pumps blocked massive difference in flow and return. (Or thermister popper - uncommon) or she's dry.

Ha you've got a manual

 

[dancinplumba]

Didn't mean u me old fruity ! Where ave u been ?

F75 is the little kit jobby to fix.

Suffering a 2 month bout of the Black Dog, an still there

 

[Ermintrude]

What's black dog?

 

[Rickster123]

Good to see you back on dancin! Missed ya!

 

[Dotty]

All of which is too much info for open forum.

Welcome back Stevo.

 

[Reg Man]

So,what's f23 then, never had this before.

F23 is in the manual, as per post 2.

 

[Leo21]

F23 is in the manual, as per post 2.

I was asking what the real world cure is, not chapter and verse from the book.

 

[Ermintrude]

Ahh. Basically it's a flow problem . Clean out and check it's circulating properly me thinks first.

 

[Reg Man]

I was asking what the real world cure is, not chapter and verse from the book.

That's not very friendly.