Central heating always ON- IDEAL ISAR HE-24

[doitnowj]

Hello and firstly thanks for any comments you might leave..


I have a IDEAL ISAR HE-24.

The central heating is always on when timer setting is of ( i.e between 11pm and 8am).

1) During this time when ever the 't' symbol shows on the display. ( which i believe means the plate is being pre-heated to keep the water at a constant temperature) the boiler comes on and the radiators are heated up. When there is no 't' the radiators cool down untill the 't' comes on again at which point they heat up again.

2) When the timer for the central heating is ON (i.e. 8am- 11pm) the system appear to work OK. When the 'c' is showing the central heating is coming on ( and probably whe the 't' is). But its a bit harder to tell when the central heating timer is on - what exactly is going on.

I would really appreciate if anyone has experienced or has some knowledge about the situation in 1). Please chip in!
best,

Isla

 

[justqualified]

Diverter valve passing to radiators when hot water preheat is on.

 

[superman123]

agree divertor passing.

 

[doitnowj]

Many thanks for your diagnosis. Could you tell me what action needs to be taken to correct the situation?

Much appreciated
Isla

 

[superman123]

go to the gassafe website type in your post code and get a list of qualified engineers to replace. dont try with diy or you will get wet.