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Mend Heating, Home Heating Systems

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 fix... [Read more]
Mend help water pressing

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 ... [Read more]
Mend valve earlier help

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 p... [Read more]
Mend hello controls thermostat

Potterton Netaheat Boiler stopped working?

Hello, I have a Potterton Netaheat Boiler with Potterton EP2002 Controls and Honeywell Thermostat. Last night... [Read more]
Mend cylinder stat cylinder stat

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 1... [Read more]
Mend code number turn

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 usi... [Read more]
Mend thermostat flashing light

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... [Read more]
Mend mode system battery

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 pa... [Read more]
Mend central heating replace

changing central heating thermostat?

I currently have a Honeywell stat for the central heating and have been given a digital one to replace. can an... [Read more]
Mend alarm keypad code

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 com... [Read more]
Mend boiler shut down

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 az... [Read more]
Mend reset supply hot

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 ... [Read more]
Mend boiler oil turn

no heat?

I have a honeywell series 8 boiler - Heater went off before oilman came - have oil now -how do I turn heater b... [Read more]
Mend alarm going years ago

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 se... [Read more]
Mend working time started

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 ... [Read more]
Mend combi boiler running help

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 beck... [Read more]
Mend stopped working moving

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 n... [Read more]
Mend box working fine

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 r... [Read more]
Mend heating pcb fitted

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. ... [Read more]
Mend honeywell controls boiler

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 t... [Read more]
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