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We have 92 questions about mending 'system heat combi'

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Mend Heating, Home Heating Systems

I have an ariston E Combi 38 which keeps shutting down when trying to heat ?

Ariston E Combi 38 fires up to heat radiators, but switches self off after about a min, then refires up after ... [Read more]
Mend Heating, Home Heating Systems

How do I reset my Credanet 1 system?

One of four combi Heaters in my Credanet 1 Home heating system was inadvertently switched off for a long perio... [Read more]
Mend D.I.Y, Plumbing

Heat Exchanger?

If a heat exchanger is blocked on a combi boiler can this have an effect on the hot water and the heating or i... [Read more]
Mend Heating, Home Heating Systems

Grant Combi 90 V3?

I am stuggling with airlocks in my system and no matter how much I bleed the radiators I cannot seem to have h... [Read more]
Mend Heating, Home Heating Systems

Bolier not firing up?

I have a Ravenheat csi 85t combi boiler, 4 years old. I heats up the water but will not fire up to heat radi... [Read more]
Mend Heating, Home Heating Systems

Glowworm 38 CXI combi hot water disappering and coming back?

I have a 6 year old Glowworm 38 CXI combi boiler which delivering hot water only for the first minute and afte... [Read more]
Mend Heating, Home Heating Systems

fireing up and then shuting down it gets up to heat ?

hi baxi combi 80 eco cleaned system, cleaned both heat exchangers, cleaned fan working ok, cleaned pump w... [Read more]
Mend Heating, Home Heating Systems

Ravenheat 85T Condensing Combi Boiler?

Boiler is about 5 yrs old. Added extra pipes to heat another room, after bleeding the system through (there wa... [Read more]
Mend Heating, Home Heating Systems

cannot locate the thermostat reset button?

i have a saunier duval thema f23 combi boiler british gas has fit a new heat exchanger and pump we still get a... [Read more]
Mend Heating, Home Heating Systems

Could boiler heat exchanger be clogged?

My boiler seems to take ages to deliver hot water to the taps... over a minute, more to bathroom which is loca... [Read more]
Mend Heating, Home Heating Systems

Central heating Potterton Promax Combi HE boiler has gone down - no heat at?

Hi, can you please advise how I can fix my central heating which has gone off and showing fault E119 low syste... [Read more]
Mend Heating, Home Heating Systems

heatline s30 combi gas boiler?

hi i have a heat line boiler s30 when the heating is on the pressure rises slowly to 3.5 bar in the red i dar... [Read more]
Mend Heating, Home Heating Systems

How can I upgrade my Worcester 350 heater control?

We have a Worcester 350 combi-boiler with a UT2 single-channel time switch to control the central heating. Tem... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Worcester Combi 30si?

I have a Worcester 30si Greenstar Combi in my loft space .Last week we woke up to no hot water and no cent.hea... [Read more]
Mend Heating, Home Heating Systems

How can I fix:?

Vokera Linea 24 combi boiler. Boiler starts up fine. Water heating fine, although preasure does gradually dr... [Read more]
Mend Heating, Home Heating Systems

Adding dispersants to circulating water?

We have a Vaillant Combi, whic is persistently (at 2 year intervals) having to have the hot water heat exchang... [Read more]
Mend Heating, Home Heating Systems

worcester bosch 26/32 oil boiler + solar?

I have fitted thermal solar system to my oil combi heatslave 26/32. I have used a combi valve that directs any... [Read more]
Mend Heating, Home Heating Systems

Hot Water and heating on at the same time, cant stop it?

when I switch hot water tap on, boiler fires up as normal but radiators heat up as well, although heating syst... [Read more]
Mend Heating, Home Heating Systems

Low Pressure on Ravenheat Condensing Combi CS1 85A (T)?

The pressure keeps dropping on my boiler,i cannot find any obvious leeks on the system.Also the dhw takes ages... [Read more]
Mend Heating, Home Heating Systems

Combi Boiler CH ok but no HW?

I have an old oil-fired Firebird C20 70K combi boiler, that provides CH and DHW to my house which has a single... [Read more]
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