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We have 473 questions about mending 'water combi system'

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Mend Heating, Home Heating Systems

ravenheat boiler problem?

I have a Ravenheat LS 100T combi boiler around 8 years old. Never had a problem with it but the system pressur... [Read more]
Mend Heating, Home Heating Systems

Potterton Promax Combi HE Plus 28 nNo Central heating ?

System been switched to hot water only Now can't get Central heating to fire up. Thermostat not clicking. Hot ... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Main Combi 30HE boiler?

The domestic hot water system is not operating properly as it heats the water to the right temperature when yo... [Read more]
Mend Heating, Home Heating Systems

worcester combi 24irsf?

hi my boiler has lost pressure. when i tried to add water through tne water supply inlet to pressurise the sy... [Read more]
Mend Heating, Home Heating Systems

combi 24i keeps loosing water pressure?

my 24i keeps loosing pressure and then the hwc keeps turning off only. I top up the system and everything wor... [Read more]
Mend Heating, Home Heating Systems

Diverter valve motor dripping, ?

Heatline C24 combi, complete new system in 2009 and serviced annually never had any probs, but notice dripping... [Read more]
Mend Heating, Home Heating Systems

my heating and hot water w3ont stay on?

when I use my combi boiler, the heating and hot water come on for approx. 3 minutes then go off for 4 mins the... [Read more]
Mend Heating, Home Heating Systems

Vailant 828e combi boiler pressure drop?

The above combi boiler is loosing water pressure, very slowly. I have checked radiators (no leaks) & expansion... [Read more]
Mend Heating, Home Heating Systems

Worcester 28CDi boiler will not fill?

My Worcester 28CDi combi boiler stopped providing hot water this morning while I was in the shower. Looking... [Read more]
Mend Heating, Home Heating Systems

my Ravenheat 820/20 combi keeps overheating?

when the boiler powers up on central heating the boiler keeps running and makes the water presure go above 3 b... [Read more]
Mend Heating, Home Heating Systems

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 Heating, Home Heating Systems

new worcester 550I combi boler?

When the hot tap is opened fully the temp of the water increases until the boiler trips out .Worcester service... [Read more]
Mend Heating, Home Heating Systems

How can I get rid of trapped air in central heating system?

After replacing the small rubber seal on the shaft of the hydraulic actuator in my BIASI 24S Combi boiler, the... [Read more]
Mend Heating, Home Heating Systems

Condensing boiler overflow dripping?

We moved into a newbuild 18 months ago but over the last 2 months the overflow pipe to my boiler (located dire... [Read more]
Mend Heating, Home Heating Systems

Does my boiler need it's gas pressure adjusting ?

My Sabre 35 Combi boiler fires up ok when i turn on the hot water tap, but the water has to run for ages befor... [Read more]
Mend Heating, Home Heating Systems

How to isolate hot water taps in combi boiler system?

What to do before replacing hot water tap washer in combi boiler system
Mend Heating, Home Heating Systems

Ideal Combi Logic boiler "L3" fault. ?

Whenever the temperature knob is turned up higher than half way, the boiler shuts down, flashing L and 3. Have... [Read more]
Mend Heating, Home Heating Systems

how to fix a firebird enviromax combi PCB C20?

I think water may of got into the system. The tank ran completely out and i noticed as i was bleeding it that ... [Read more]
Mend Heating, Home Heating Systems

Greenstar CDi combi boiler overheating?

Hi, Greenstar CDi combi boiler 3 years old. Top floor radiators cold so bled, this dropped water pressure to z... [Read more]
Mend Heating, Home Heating Systems

DWH / Central heating BAXI Combi 80e?

When the radiators are up to heat I go to use the DHW, the system turns off and the fault light appears so I ... [Read more]

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