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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3632
Experience:  Gas cooker specialist
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ecomax combi boiler,hot water good ,ch comes on reaches 85

Resolved Question:

ecomax combi boiler,hot water good ,ch comes on reaches 85 very quick then goes off,have checked heat exchanger and pipes not blocked ,could it be diverter valve?
Submitted: 2 years ago.
Category: Appliance
Expert:  Andrew Smith replied 2 years ago.
***** ***** : When on heating only do the heating pipes get hot at all?
***** ***** : can you feel them?
Customer:

only the flow and very hot inside boiler area ,reaches 85 degrees very quick then goes off

Customer:

hot water ok

***** ***** : It sounds like a pump problem
***** ***** : definitely a circulation problem
***** ***** : are you able to take the cover off to expose the pump?
Customer:

no pump is working ok can here it and when i drained dwn checked to make sure not stuck

Customer:

could the diverter valve cause this problem

***** ***** : you can take the centre screw out and see how fast it is spinning
***** ***** : it could if not opening fully
***** ***** : it could be running around the plate heat exchanger instead of the heating
Customer:

ok i will try this so u dont think its the diverter valve

***** ***** : If you can prove the pump is pumping fully then we can move on
Customer:

ok i go have a look and get back to you in 5 is that ok

***** ***** : no problem
Customer:

pump is spinning round fine i took off cap from front of pump seems to be spinning fast

***** ***** : ok try turning off all the rads except the closest and see if the water will circulate that far?
Customer:

heat exchanger hot all pipes in boiler hot flow os boiler hot but then cuts out

Customer:

ok i will be 10 mins ok

Customer:

no good still the same im afraid

***** ***** : how far does the heat get from the boiler?
Customer:

just to the flow about 6 inches from boiler

Customer:

pump still spinning

***** ***** : If the pump was ok then it would get around the full circuit but the temperature would be low
***** ***** : the divertor is fine as all the heat is being diverted into the heating
Customer:

it comes on and goes up to about 85 within 10 seconds then flame cuts out

***** ***** : yes, no circulation
Customer:

so you think pump is the problem not stong enough ie not spinning fast enough

Customer:

strong enough

***** ***** : yes, perhaps there is a prblem with the impellar
***** ***** : spinning but no water movement
Customer:

right ok thank you andrew you was very helpful god bless

***** ***** : no problem
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