How do I make my Ecotec boiler allign with my Honeywell CM67?

The two devices aren't communicating with each other. It's happened once before and cost us £85 to get it fixed. The boilerman then said if it happens again all I need to do is to make sure they alli ... more

ideal icos he15 no display?

Can anyone help? Just checked my Ideal ICOS HE15 as I have no hot water. There is no display on the HE15 I've tried pressing re set button nothing happnes! The lights are on the honeywell timer (EG ... more

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how can i check my honeywell v4073a 3-way diverter valve?

many thanks to brian for his earlier help further to my earlier request i have checked my grundfos selectric pump & it is working as it should so i now suspect either the manual roomstat or the divert ... more

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Potterton Netaheat Boiler stopped working?

Hello, I have a Potterton Netaheat Boiler with Potterton EP2002 Controls and Honeywell Thermostat. Last night when going to bed I turned down the thermostat but the boiler didn't turn off which it no ... more

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switchmaster cylinder stat to honeywell cylinder stat?

on the switchmaster sct1 there are 4 wires-red-brown-blue-green/yellow,which do i use with a honeywell L641A 1039 4A 230V replacement? Regards.

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Honeywell Accenta mini?

I tried to change user code 2 number and in doing so I triggered the alarm off and not can not turn if off using the usercode 1 number or 2. Nothing seems to work. Tried the engineer code as well as ... more

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How can i stop my honeywell cm41 thermostat from flashing?

I have replaced the batteries in my thermostat and teh battery light above the time contiinuously flashes. Any ideas ? I do not have a mnaual as I have just moved in and can't find a free one to down ... more

get out of engineer mode and get rid of tamper?

Hi I have a honeywell galaxy 2 system, it needed a new battery the engineer talked me through that, but the panel kept saying tamper and nothing we done could get rid of tamper, he said he would come ... more

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changing central heating thermostat?

I currently have a Honeywell stat for the central heating and have been given a digital one to replace. can anyone tell me where the wires go. The existing Honeywell has 2x wires blue to No. 1 and br ... more

how can i fix accenta alarm ,honeywell 8ep416?

i cannot set my alarm on my honeywell led keypad 8ep416.when i put in the 4 digit code in the pa red light comes on. cannot set day or night mode please help if you can

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boiler bangs when zones shut down?

i have a new gwa hot water boiler model 175ns with 4 honeywell zone valves v8043e1012 controled with a argo az4cp when any zone shuts off i get a bang in the area of the valves it happens even right a ... more

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what else can i try to reset rc10/433?

my electricity supply shut down unexpectedly but is now restored. Since then, I have hot water but no central heating. I've pressed reset button on rc10/433 but red indicator light only comes on for a ... more

no heat?

I have a honeywell series 8 boiler - Heater went off before oilman came - have oil now -how do I turn heater back on?

Accenta / Optima burglar alarm keeps going off when we set it. Help!?

3 years ago we had a honeywell accenta / optima alarm installed. in the last 2 weeks when we have tried to set it, the alarm has gone off every time within 3 minutes of us driving away. I cant find ... more

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Radiators not all working all the time???

We have a problem with our heating, we think it started after we bled some radiators and took one off to wash threw. The rads downstairs are not getting hot, the rads nearest to the boiler appear to ... more

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my combi boiler is oil fired and it is running to often and is also short c?

Please help! Our boiler runs to frequently and short cycles, etc.we have a burhnam boiler (r6-110) with a becket burner(al-169356).the boiler has a coil for domestic hot water. There are three taco (5 ... more

Oil-filled radiator fell over, stopped working?

Hi. I was moving some furniture in my bedroom and knocked over my Honeywell Oil-filled radiator. It now will not turn on (it was plugged in at the time so I don't know if the cord was yanked as it fel ... more

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How can i marry my honeywell CM921 the the BDR91 relay box?

we have a Honeywell CM921 thermostat and a BDR91 relay box, for the past two years was working fine. However recently the system appears to have stopped recognising eachother. To make the heating work ... more

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Ferrloi 25c no Heating after new PCB fitted?

Initial fault of F26 caused by frozen condensate pipe. F 26 couldn't be cleared so the PCB had to be changed. After changing PCB the unit ran fine for 18hrs then no Heating but hot water. The pressure ... more

F24 code on Honeywell Smartfit?

I have a code saying F24 on my Honeywell Smarfit, which is on the wall and controls the setting, timings for the boiler. What does it mean? How can I get rid of it? Does something need fixing. It doe ... more