My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008 and has
been fine until a few weeks ago.
We leave the heating on constant and use the thermostat to control it. When we
turn the thermostat down last thing at night, the pump keeps running for a very
long time, even when there is no heat left in the radiators. There is also a lot
of clicking coming from the boiler. I have resorted to turning off the mains to
get it to stop.
This problem is just with the heating and not the hot water, which only comes on
for a brief period in the day, and the pump always shuts down normally after the
hot water has been on.
Has anyone else had this problem and what did you find helpful?
I haven't had this problem but W-B have a good repair service. I
would recommend calling them out. And I don't recommend switching off
at the mains. The fans on some W-B boilers are prone to failure and
need running regularly.
(='.'=) If a man stands in a forest and no woman is around
Similar sort of problem with the same boiler, yes. Turned out to be the
cheap and nasty Chinese relays they use. Try exposing the control pcb and
gently tapping it whilst listening for the characteristic relay 'click'
followed by the pump cutting out. Then you'll know for sure it's a relay.
However, sometimes there's no 'click' but the same thing happens anyway.
In both cases, it's a relay. Even when the relays are energised and the
contacts appear closed, they can still be open circuit as they often
don't close with sufficient pressure to pass current.
If Worcester-Bosch had used decent relays, it wouldn't have added hardly
anything to the final price, so it's a shame. A service bod won't bother
trying to trace a faulty relay, however, he'll just swap out the whole
board (90 quid odd) and charge you for that plus the labour etc. If
you're handy with a soldering iron, you can save a worthwhile sum just
replacing the duff relay(s).
Proper hate boiler problems as you never know how much it'll cost to be put right! Mind you don't trust BG though as I read that they like to turn a modest fault into a new boiler sale for their commission!
Instead, try asking a local heating engineer for help/advice. It may be something that they can fix quite easily and quickly - if you're stuck with who to ask, try STL Heating because they were very helpful to me and they didn't mess me about either.
On Monday, March 3, 2014 at 9:44:01 PM UTC, Mike wrote:
ere is also a lot of clicking coming from the boiler.
The whole electrical wiring circuit associated with the boiler and the boi
ler itself needs to be checked. Sometimes soon after the clicking noise sta
rts the boiler stops working.For your safety and the safety of others aroun
d you if you are not qualified never remove the boiler cover and tap on the
relays as stated in previous posting. Taping on the printed circuit board
relay might cause damage to the board electronic components or circuits.
Thousands of Worcester Bosch boilers repaired and serviced.
Electronic engineer and Electrical Engineer
Gas Safe registered engineer before working for Worcester Bosch, whilst wor
king for Worcester Bosch as a boiler breakdown engineer and currently a gas
Safe registered engineer.
On 17/04/2016 10:39, email@example.com wrote:
I suppose he has probably fixed it in the two years since posting, but
just in case, what practical tests would you suggest?
(keep in mind this is a skilled and knowledgeable DIY group - posts that
simply suggest "get a man" tend to get laughed at here).
If you have got useful things to contribute, let's have them.
replying to John Rumm, Tony wrote:
have this problem, last night with water/heating off boiler was still
starting/clicking. luckily engineer visited this am and was able to hear noise.
He spoke with Worcestor boilers support and they say its likely to be voltage
leakage triggering the boiler/fan and have suggested fitting a capacitor to
solve problem...and if that doesnt work then new board. Will post update when i
know its fixed
replying to Mike, Grannysmith wrote:
I too have a Worcester Greenstar Ri it is 8yrs old , it is making the same
clicking noise my man was going to have a word with the Worcester dealer but as
yet no comeback. It is making the noise all the time now but only when the
heating is on not the water
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