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Servowarm Boiler Elite 30

I need to locate a part for a servowarm Elite 30 the part is the overheating stat sensor the GS number of the boiler is 4171426

If I can't get that part is there an alternative?

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  • larry rosen May 11, 2010

    are you in us or uk?

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  • 30 Answers

Try parts center web site or mjt controls both are helpful and have phone numbers to contact technical dept.

Posted on Mar 30, 2009

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I assume losing pressure through the PR means Pressure Relief Valve (PRV) or temperature pressure (TPR). Open in TPR may mean boiler is overheating/overpressurized. Open in PRV means the Pressure Reducer/Fill Valve in the fill line of the boiler is broken.
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From your description it appears that the boiler is shutting down on internal boiler water temperature (too high), your 'briefly too hot' HW symptom may be caused either by the boiler side of the secondary heat exchanger being blocked/caked in sludge, OR the DHW side of it being scaled. Either way a new or replacement (descaled) secondary heat exchanger MAY inprove things. It's not easy on these old clunk-pots, and EVERY disturbed seal will subsequently leak, so get a good supply of o-rings and fibre seals before you start ("you" being the competant fitter you employ)

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The hard part is finding out which one you need.

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Why does my Ferroli HE31C keep switching off code A3.


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1 Answer

Overheating


you could have a flow problem due to sludge or scale in the boiler, it could be a pump problem as it may not be circulating enough water around the system. or it could be a faulty thermostat if it is not cutting out soon enough.
1st try turning the boiler stat down to its minimum, if it still over heats then it is probably the stat.
if you have a switch on your pump to increase the speed make sure it is on setting 3. if the pump is old then it may be time for a replacement.

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