How to mend ... B Dhw Out

Ravenheat 820/20 boiler?

Our Ravenheat 820/20 boiler wont fire up on DHW or CHG . Any clues would be helpful as to solving the problem... [Read more]

ferroli optima 901 c/heating problem?

heating will not come on but hot water ok. pump runs. boiler fires up when stone cold for c/h eventually but w... [Read more]

Heatline solaris fault?

The snowflake icon is lit on the display but it isn't cold enough yet. DHW fires up to about 40 degrees and th... [Read more]

central heating works fine, but hot water keeps going on and off?

i have a ariston eco 35mffi c ombi boiler.The central heating works fine,but the hot water(dhw)starts fine, th... [Read more]

How do I fix my Worcester Heatslave 20/25 combi?

If I run the hot water for a few minutes the temp drops to about 20 degrees, I've turned up the dhw thermostat... [Read more]

error code 5 on maxol supacombi he 28?

hi all . error code 5 keeps coming on when the boiler is either heating up dhw or ch . flame is light and wate... [Read more]

Ravenheat boiler ( ye i know there s*&%e )?

Hi Guys My Ravenheat boiler works very intermittently , it can run for most of the day , both DHW & CH , t... [Read more]

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]

anyone help with Baxi 105 HE problem?

Hello new to this site - hope someone can help with this problem. Baxi 105 HE - ch stopped working, in dhw mo... [Read more]

ref my biatsi boiler?

I can only get dhw if the heating is on

Halstead ace high will not reset?

Hi, I have just serviced a Halstead ace high 30kw combi for a customer. I closed the gas valve to check the ... [Read more]

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]

If Iam getting hotwater but the radiators do not work at all and the red ?

On a heatline c28 boiler if Iam getting hotwater but the radiators do not work at all and red light for DHW f... [Read more]

Ravenheat csi 85t?

No ch,no hot water,green power light on,red light stays on/lockout.no 240v at pump or fan.checked fuse,changed... [Read more]

Halstead finest gold, no hot water, only when heating is on?

Halstead finest gold, only get hot water when heating is on for a few minutes. Otherwise no hot water at all? ... [Read more]

Can anybody advise why Flexicom 35CX goes into state S53 when in DHW mode?

The boiler works fine for central heating and DHW for sink taps and shower, but when bath tap is used the boil... [Read more]

potterton performa 28 boiler?

hi there my boiler fires up constantly once the electric is switched on,cannot control it from the room thermo... [Read more]

potterton performa 24 ?

my boiler keeps fireing up then going off within seconds when heating is on it does get radiators hot but same... [Read more]

ravenheat csi85a ch problem ?

dhw working fine but boiler cycling when in ch mode.boiler will light and go out after about ten seconds and g... [Read more]

why ami losing pressure on my green star 28i junior boiler?

system and dhw working ok! check radiators for leaks and all topped up. The system is not dumping water ive ch... [Read more]