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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3757
Experience:  Gas cooker specialist
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I have a Worcester 35 CDI Boiler. The hot water was not coming

Customer Question

I have a Worcester 35 CDI Boiler. The hot water was not coming on so I checked the boiler and found the light wash flashing at the tap icon. I re pressurised it as the pressure was low but that still doesn't fix it. When I try to turn on the heating the light at the radiator icon flashes. I read that this was an air lock. Is that right and how do I fix it?
Submitted: 4 years ago.
Category: Appliance
Expert:  Andrew Smith replied 4 years ago.

Andrew Smith : Can you take off the cover and see if you can locate the pump on the right at the rear?
JACUSTOMER-h07rtjz4- :

The big red one? :0)

JACUSTOMER-h07rtjz4- :


JACUSTOMER-h07rtjz4- :

Anyone there???

JACUSTOMER-h07rtjz4- :

Im standing at the boiler with the cover off Andrew. Ill put it back together seeing as you've gone!

Andrew Smith : Sorry, sometimes it drops out this end
Andrew Smith : is it a scarlet colour - Grundfos?
Andrew Smith : There is usually a vent cap at the top of the pump manifold at the rear?
Andrew Smith : can you make sure it is slack?