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Andrew Smith
Andrew Smith, Plumber
Category: Home Improvement
Satisfied Customers: 3629
Experience:  City and Guilds Qualified plumber
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hi,i have a halstead 82 combi boiler,when turning on the hot

Resolved Question:

hi,i have a halstead 82 combi boiler,when turning on the hot tap the water gets hot then the boiler knocks off then after a while a minute or so the boiler fires up again and knocks off again.when i turn tap off after a while the boiler fires up again on its own for a few seconds then knocks off.
Submitted: 3 years ago.
Category: Home Improvement
Expert:  Andrew Smith replied 3 years ago.

XXXXX XXXXX : Has the water been getting worse?
Customer:

yes

XXXXX XXXXX : It will probably cure it if you get your hot water plate heat exchanger descaled
XXXXX XXXXX : the problem is your boiler is trying to heat the water but the heat transfer is too slow
Customer:

how do i descale the heat exchanger

XXXXX XXXXX : It will have to be removed and put in a bucket of strong descaler
XXXXX XXXXX : do you have the boiler instruction manual?
Customer:

no

XXXXX XXXXX : http://freeboilermanuals.com/pdf/halstead/AceAceHigh20Manual.pdf
XXXXX XXXXX : Halstead made it for Wickes, I think this is yours
XXXXX XXXXX : Page 30
Customer:

yeah thats correct.

XXXXX XXXXX : It shows you how to remove it, place in a bucket of strong descalerdo and refit
XXXXX XXXXX : *descaler
Customer:

thanks for that,i try and get the manual,then strip it down at weekend,

XXXXX XXXXX : You can download it from the link I sent you for free
XXXXX XXXXX : http://freeboilermanuals.com/pdf/halstead/AceAceHigh20Manual.pdf
Customer:

cheers

XXXXX XXXXX : no problem
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