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Rob
Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 420
Experience:  20 yrs. experience with a major worldwide manufacturer.
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i emtied my system to take out a radiatorbut when ive filed

Customer Question

i emtied my system to take out a radiatorbut when ive filed up and switched the boiler back on i open the hot water tap it runs for a few seconds but then steam comes out of the black cap on the top this has never happened before when ive filed up and it made me a bit worried can u help please richard ryan
Submitted: 3 years ago.
Category: Appliance
Expert:  Andrew Smith replied 3 years ago.
The black cap on the top of where?