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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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The worcester high flow 400 electronic boiler keeps tripping

Customer Question

the worcester high flow 400 electronic boiler keeps tripping when i'm in the shower the water temp goes up down then cold and i have to reset it, it always leaves the radiator LED flashing, whats the problem bud, is it the diverter valve?
JA: How long has this been going on? And how severe is the problem?
Customer: it has been going on a while but has got considerably worse over the last week
JA: Do you plan on doing the work yourself?
Customer: yes i'm a corgi registered engineer but i do IGE UP 1A work
JA: Anything else we should know to help you best?
Customer: don't think so bud, just a synopsis of what you feel it is.
Submitted: 6 months ago.
Category: UK Plumbing
Customer: replied 6 months ago.
Do you have any answers for me yet?
Expert:  Andrew Smith replied 6 months ago.

Is it only for the shower?

Is it a thermostatic mixer?

Customer: replied 6 months ago.
No, they are thermostatic showers but cuts out even if we turn the hot water tap on or when the heating is on. The washing machine can be on and it cuts out??
Expert:  Andrew Smith replied 6 months ago.

ok, sounds like it is overheating - perhaps due to a scaled up hot water heat exchanger.

If this was the case then boiler would run flat out to try and heat the water up and then overheat.

How old is the boiler and has it been descaled before?

Customer: replied 5 months ago.
Hi, thank you for getting back to me. We have descaled the heat exchanger but this has not worked. It is still tripping out and when it is on, it doesn't get up to temperature??

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