Valliance Turbomax Timer Issue

[Ruth Summers]

Hi,
I have a Valliance Turbomax vuw gb 242/2-5. All working beautifully apart from the timer. The clock is turning ok but not switching either on or off. Status/Error code is S.7
Can anyone help with diagnostics? Is there an easy fix or will we need to replace timer?

I've scrolled through loads of forums but can't find a solution.

Thanks in advance

 

[CBW]

S7 (if the same as EcoTEC) is pump overrun. What thermostat do you have? Is the clock part of the boiler?

 

[Ruth Summers]

yes part of boiler, I've attached photo, thanks

 

[CBW]

Try pushing all pins in and setting on the timer, see if that works. Also the radiator temperature seems lower than I’d expect for this time of year. Try turning this up before pushing the pins in.

 

[Ruth Summers]

Ok, so I did that, turned temp right up, all pins in, then I cycled the clock round 24hrs (not sure if meant to!) and then tested the timer to see if would switch off and no joy unfortunately.
The temp reading has never seemed right to me since we moved in, do you think that could have anything to do with the timer issue or totally separate issue? Thanks

 

[CBW]

Set timer to off (the moon symbol) and then press the I button, and what is the status code?

 

[Ruth Summers]

it's S.7 still

 

[CBW]

Turn the room thermostat down to lowest setting and press I button

 

[Ruth Summers]

it's now S.31

 

[ianmcd]

and has the boiler gone off now ?

 

[CBW]

it's now S.31

This is showing a demand from somewhere, is the timeswitch definitely off? If so, then I’d suspect it is faulty. Normally it’ll show s.30 (room thermostat blocking, as in no demand).

If it is the timeswitch, here’s the replacement part: https://www.directheatingsupplies.c...MIzpr4npPW7gIVEL_tCh2eaQYNEAAYASAAEgKkT_D_BwE

 

[ianmcd]

This is showing a demand from somewhere, is the timeswitch definitely off? If so, then I’d suspect it is faulty. Normally it’ll show s.30 (room thermostat blocking, as in no demand).

If it is the timeswitch, here’s the replacement part: https://www.directheatingsupplies.c...MIzpr4npPW7gIVEL_tCh2eaQYNEAAYASAAEgKkT_D_BwE

Chris I was suspecting the control knob shaft has snapped in the winter position, they are very flimsy

 

[CBW]

Chris I was suspecting the control knob shaft has snapped in the winter position, they are very flimsy

I know they’re prone to breaking on the Ecotec pro’s however, when the room stat is on lowest, I'm sure it should still show s.30, though could be wrong.

 

[ianmcd]

I know they’re prone to breaking on the Ecotec pro’s however, when the room stat is on lowest, I'm sure it should still show s.30, though could be wrong.

S.31 No heat demand boiler in summer operating mode

 

[Ruth Summers]

hi, the boiler remained on and is now showing as S.7 again. Thanks for the link to the timer, may give that a try. Thanks again