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07722 805409Boiler showing a code?
Find your boiler below. Each code says what it means, the one or two things that are safe to try yourself, and when to stop and phone us. If the house is cold and someone elderly or unwell lives there, skip the list and call 07722 805409: you go to the front of the queue.
If something isn't right, we'll put it right
Greenstar
Try first: Check other gas appliances work (hob, fire) and that the gas meter has not tripped or run out of credit. Reset the boiler once.
Then: If it locks out again, stop resetting it. Repeated ignition attempts need an engineer to check the gas valve, electrode and flue.
Try first: Turn the boiler off at the switch and let it cool for twenty minutes. Check the radiators and the pressure gauge, then reset once.
Then: Overheating usually means poor circulation: a tired pump, a stuck valve or sludge. It needs a proper look.
Try first: Look at the pressure gauge on the boiler. If it is below 1 bar, top it up to between 1 and 1.5 bar (system cold) using the filling loop, then reset the boiler once.
Then: If it drops again within a few days there is a leak or a faulty expansion vessel, and that is a visit.
Try first: Nothing safe to try at home beyond one reset.
Then: A fan or flue fault is not a customer fix. Leave the boiler off and call us.
ecoTEC
Try first: Look at the pressure gauge on the boiler. If it is below 1 bar, top it up to between 1 and 1.5 bar (system cold) using the filling loop, then reset the boiler once.
Then: If it drops again within a few days there is a leak or a faulty expansion vessel, and that is a visit.
Try first: Check other gas appliances work (hob, fire) and that the gas meter has not tripped or run out of credit. Reset the boiler once.
Then: If it locks out again, stop resetting it. Repeated ignition attempts need an engineer to check the gas valve, electrode and flue.
Try first: Check other gas appliances work (hob, fire) and that the gas meter has not tripped or run out of credit. Reset the boiler once.
Then: Flame loss while running often points to the gas supply, flue or condensate pipe (frozen in winter). Call us.
Try first: Check the pressure gauge is above 1 bar and reset once.
Then: F75 is normally a tired pump or a blocked sensor and needs an engineer.
Baxi, Main and Potterton
Try first: Check other gas appliances work (hob, fire) and that the gas meter has not tripped or run out of credit. Reset the boiler once.
Then: If it locks out again, stop resetting it. Repeated ignition attempts need an engineer to check the gas valve, electrode and flue.
Try first: Look at the pressure gauge on the boiler. If it is below 1 bar, top it up to between 1 and 1.5 bar (system cold) using the filling loop, then reset the boiler once.
Then: If it drops again within a few days there is a leak or a faulty expansion vessel, and that is a visit.
Try first: Check the pressure, make sure radiator valves are open, reset once.
Then: Circulation faults are usually the pump or a blockage and need a visit.
Try first: Turn the boiler off at the switch and let it cool for twenty minutes. Check the radiators and the pressure gauge, then reset once.
Then: Overheating usually means poor circulation: a tired pump, a stuck valve or sludge. It needs a proper look.
Logic and Vogue
Try first: Look at the pressure gauge on the boiler. If it is below 1 bar, top it up to between 1 and 1.5 bar (system cold) using the filling loop, then reset the boiler once.
Then: If it drops again within a few days there is a leak or a faulty expansion vessel, and that is a visit.
Try first: Check other gas appliances work (hob, fire) and that the gas meter has not tripped or run out of credit. Reset the boiler once.
Then: Repeated flame loss needs the gas valve, electrode and flue checked. Call us.
Try first: Check other gas appliances work (hob, fire) and that the gas meter has not tripped or run out of credit. Reset the boiler once.
Then: If it locks out again, stop resetting it. Repeated ignition attempts need an engineer to check the gas valve, electrode and flue.
Try first: Nothing safe to try at home beyond one reset.
Then: A fan or flue fault is not a customer fix. Leave the boiler off and call us.
One rule
Every reset is another ignition attempt. If it fails twice, the boiler is telling you something is wrong with the gas, the flue or a part, and it needs a Gas Safe engineer rather than a third try.
Codes and meanings are given as a general guide for the ranges named; always follow the instructions in your boiler's own manual. Never remove the boiler casing. If you smell gas, leave the property and call the National Gas Emergency Service on 0800 111 999.
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Fixed diagnostic fee, parts in the van, same-day slots across West Dunbartonshire, Helensburgh and Loch Lomond.
