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Mend code working years

Ferroli Optimax HE31C Error Code NOcn?

I have a Ferroli Optimax HE31C Boiler and it has been working fine for years but all of a sudden it has fault ... [Read more]
Mend thermostat boiler temp

Thermostat for boiler stuck at 5 tried to raise it too 22 by pressing the u?

Room temp is 21.5 but I tried to raise the thermostat from 5 too 22 but it won't move when I press the up butt... [Read more]
Mend boiler call temperature

boiler cycling?

with no call from the heating/hotwater or under floor heating .The boiler continues to cycle.Is the cause.the ... [Read more]
Mend ideal classic switch boiler

IDEAL Classic FF250 won't switch on?

I have a IDEAL CLASSIC FF250 central heating boiler that has stopped working - when the ignition switch is put... [Read more]
Mend thermostat room vaillant

how to recommission thermostat ?

I've been told my room thermostat needs recommissioning Could you tell me how to do it please. The boiler is a... [Read more]
Mend central heating not come

Central Heating not come on?

I have a Boss Therm BR1 receiver with a BRTRF wireless thermostat. I believe the thermostat is communicating w... [Read more]
Mend heating combi fine

Remeha Avanta Plus not not activating heating?

I have just moved in to a new property with an Avanta Plus Combi Boiler. It works fine for heating the Hot Wat... [Read more]
Mend hot water boiler ignites

heating?

potterton suprima 50l when I ask for hot water the heating comes on? the boiler ignites and seems fine,tried t... [Read more]
Mend hot replaced boiler

Icos he15 no hot water?

No fault code, have replaced external thermostat and still no hot water or fault code, boiler just does fire u... [Read more]
Mend halstead combi boiler

Halstead Ace hot water problems?

My Halstead Ace combi boiler will provide hot water when first required but if hot water's required again late... [Read more]
Mend heating hot water

Vokera HE35 has no heating but have hot water, how can I fix this?

Our boiler is not working properly on return from holiday we found we can only get hit water & no heating. I'... [Read more]
Mend heat exchanger gone

Why has Heat Exchanger on IDEAL ISAR HE24 gone?

So... At the end of 2008 (early December, so about 4.5 years ago). We had central heating installed for the... [Read more]
Mend fan boiler thermostat

the fan on my trianco redfyre boiler?

the fan on my redfyre boiler wont go off is it the thermostat
Mend boiler room stat starts

Greenstar 12i?

Hi, I have a Greenstar12i system boiler - When the room stat is turned up the boiler starts up and the burner ... [Read more]
Mend combi appreciated heating

Viessmann Vitodens 100 30kw combi?

Help/advice greatly appreciated. The boiler is heating water on demand but not heating rads. I’ve tried rese... [Read more]
Mend heating thermostat not work

Ravenheat heating thermostat transmitter does not work?

My Vaillant combi boiler provides hot water but the Ravenheat transmitter type thermostat has stopped working ... [Read more]
Mend thermostat switching despite

RC1 and WR1 thermostat keeps switching to alarm, despite constant resets!?

Hello, I hope someone might be albe to help me. I have noticed that my heating alarm LED keeps coming on a... [Read more]
Mend baxi heating thermostat

Baxi Combi HE heating does not turn off?

My boiler above is only 6 months old but now even when we turn the thermostat right down the heating does not ... [Read more]
Mend light thermostat central

How can I fix my glowworm fuelsaver 2 boiler?

the pilot light is on and the thermostat is turned to number 3 but the boiler does not 'fire' up. the central ... [Read more]
Mend just room thermost

I have just changed the batteries of my Wireless Programmable Room Thermost?

I have just changed the batteries of my Wireless Programmable Room Thermostat (Kit No 5117391) and now find th... [Read more]

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