Boiler Question

TheFew · 6 Sep 2018 at 22:34

Greetings,

I was hoping to sanity check the behavior of my boiler with you fine folks.

I have a Worcester green star 40cdi conventional boiler. The boiler is in Eco mode and set to a temperature of 50deg c.

The central heating is switched to off and the hot water is set to come on for 1 hour each day.

So in this condition the boiler seems to be firing every two or three minutes for around 10 seconds ( which is somewhat tedious to listed to at night).

Should the boiler be firing to keep itself at 50 deg c and ready for action? Or should the boiler remain silent and inactive I until there is an actual demand on it (e.g. a request to heat water)?

I can't help but feel that its current behavior is not quiet right...

Thanks

TheFew · 6 Sep 2018 at 23:07

Hi, yes the water is in a tank.

TheFew · 7 Sep 2018 at 06:40

Dandle said:
Your probably finding that its running, getting the loop of water up to 50 and then the tank isn't soaking the heat away fast enough so the return water is already up to temp when it comes back to he boiler hence it doesn't need to keep heating it.

Hi, I'm not sure I follow, does the boiler aim to keep the loop of water at 50deg even when the controller is not asking for the water to be heated?

Also how would I find out what the tank temperature is set to?

Thanks

TheFew · 7 Sep 2018 at 07:57

Ah thanks makes sense. But in this condition would the system still keep running once the hive controller is no longer asking the boiler to heat the tank?

TheFew · 7 Sep 2018 at 08:39

Thanks. That is my issue. When no demand on the boiler it keeps cycling on and off :-(

Finally found the temperature dial on the tank. It is set to around 55deg. Never knew that dial was there!!

TheFew · 7 Sep 2018 at 18:54

Thanks to all for the pointers and the advice.

I think I have found the issue. With the CH and HW set to off, the motorised valve for the HW was still in the on position. Whilst the motorised value is working OK, the metal valve it operates seems to be stuck open.

Some WD40 and abuse by pliers later, I am waiting to see if it is fixed.

I presume it seized because the boiler has been switched off since april..

Thanks