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Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3627
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
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I have a worcester greenstar 25si and have just tried to

Customer Question

hi - i have a worcester greenstar 25si and have just tried to turn CH on and it doesn't fire up. hot water working fine.
Submitted: 1 year ago.
Category: UK Plumbing
Expert:  Andrew Smith replied 1 year ago.

What is the pressure gauge reading?

Customer: replied 1 year ago.
1.5
Expert:  Andrew Smith replied 1 year ago.

Ok, how do you turn the heating on - with a room stat?

Customer: replied 1 year ago.
we have a Drayton
Expert:  Andrew Smith replied 1 year ago.

Is it a wireless room stat, is there a receiver box under the boiler?

Customer: replied 1 year ago.
It's wireless and the receiver box is located under the boiler
Expert:  Andrew Smith replied 1 year ago.

Do you get any lights on the receiver when you turn up the room stat?

Customer: replied 1 year ago.
No
Expert:  Andrew Smith replied 1 year ago.

It sounds like a communication problem try this;

Turn off power to boiler and receiver

Take out the batteries from the transmitter

Wait 5 minutes

Turn on the power to the boiler

Insert new batteries to the transmitter

Let me know if the two units reync and your heating comes on

Customer: replied 1 year ago.
tried that - still nothing
Expert:  Andrew Smith replied 1 year ago.

It sounds broken, I can give you a wire around solution until you swap it out?

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