MT10 Mechanical Timer

[ymt4d]

My boiler is a Worcester Bosch Junior model with the above timer fitted. It seems to have a mind of it's own at the moment timer wise and is one when it should be. It is more on than off even though the timer is set correctly. I have it at the right position within both the 12 and 24 hour system, it is on the clock timer setting but to no avail. Can anyone offer any insight into this problem? Is it a common fault? Is there something I can do or do I have to call someone out? Dilemma!!! lol

 

[Simon F]

welcome to the forum ymt4d.
call a gas safe engineer, get it swapped to a wall mounted digital controller,
it will give you better control flexibility.

 

[hammers4spanner]

welcome to the forum ymt4d.
call a gas safe engineer, get it swapped to a wall mounted digital controller,
it will give you better control flexibility.

personally wouldnt get a dt10 but a honeywell rf stat by far better

 

[R1CKY]

The timer function on these clocks tend to fail, Worcester do a range of timers for the boiler, the DT20 is a digital timer that will be a direct replacement. You do need a gas safe registered engineer to do it though, as the boilers cover needs removing to change it.

 

[willys warmer]

Mt10, mechanical clock tend very often to overheat, found as a temp fix, push all tappets in as if its on 24hr time and it often will work on heating, change for a dt20

 

[Nostrum]

agree, changing them all the time, clock stops spinning or not doing what it's told. Pile of junk

 

[dancinplumba]

agree, changing them all the time, clock stops spinning or not doing what it's told. Pile of junk

like their boilers then lol

 

[CMairiD]

Mt10, mechanical clock tend very often to overheat, found as a temp fix, push all tappets in as if its on 24hr time and it often will work on heating, change for a dt20

Agree with Willy on this temp fix. But do you have the current time set correctly? The little triangle near the upper left hand side of the clock face.