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Rick Ridley
Rick Ridley, UK Heating Engineer
Category: UK Plumbing
Satisfied Customers: 1561
Experience:  30 Years on the tools, now retired, Ex CORGI
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Our worcester bosch greenstar boiler has an intermittent

Customer Question

hi. our worcester bosch greenstar boiler has an intermittent fault with the hot water where it will suddenly run cold for 5 mins then eventually get hot again. only really when running a bath or shower, eg its been running hot for some time. any ideas?
Submitted: 2 years ago.
Category: UK Plumbing
Expert:  Andrew Smith replied 2 years ago.
It sounds like it is overheating, perhaps trying to hard to heat the water. Can you confirm the last time the boiler was serviced and the plate heat exchanger descaled?