How to mend ... Ch System Hw

No heating, but Hot Water works fine Vaillant VuW 242 failure: F.28 ?

In my case F.28 comes ONLY if heating needs to start. If I open the hot water tap during CH ignition attempt,... [Read more]

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]

biasi boiler not working properly?

biasi 24s boiler, I have replaced an airflow switch pipe, and a ch diaphragm, and bled the ch system. the boil... [Read more]

Why can we only get heating when hot water on also now(Dual programer)?

We recently needed to replace head valve due to pump over run problem.(Boiler is Potterton Profile) On putting... [Read more]

Honeywell Sundial y plan 3 position diverter valve ?

I am having problems with my Honeywell Sundial y plan 3 position diverter valve. I bought a replaceent synchr... [Read more]

My Potterton Promax System 32 HE Plus no longer heats the house adaquately?

The other morning we had no HW or CH. When I looked at the Boiler I noticed the Pressure Gauge was below 0.5 b... [Read more]

Vaillant 282 water pump runs continuously?

Pump runs all the time when either hot water or/and central heating is switched on. During winter holidays I l... [Read more]

Ideal Icos Boiler, Heatrae Sadia CL170, Reliance Pressure gauge?

My CH/HW system consists of the above components plus a room thermostat and control panel beside the boiler. A... [Read more]

How Can I Fix A Potterton EP2002 Heating System?

My daughter has a Potterton EP2002 system with a Potterton Suprima 40L boiler and a MPE322 diverter valve. Th... [Read more]

How can I replace my old boiler timer WITHOUT thermostat?

I have an old Sangamo M5 boiler timer, ticking like mad! Wanting to replace it with a modern programmable tim... [Read more]

Worcester Danesmoor oil boiler venting hot water to expansion tank?

I have a Worcester Danesmoor Utility 26/32 oil fired boiler on a vented CH/HW system. When the boiler is runni... [Read more]

ideal classic boiler?

my ideal classic boiler ff270 fires up even when no heat is called for. i.e. when the programmer for the ch an... [Read more]

Potterton Prima 40 boiler .. what controller ?

Hi, My boiler will only work when both CH and HW selected I cannot have one without the other hence bi... [Read more]

Hot Water But No CH Poterton Neataheat Profile 30e-80e?

In addition the my previous question (with same title), I managed to get the Central Heating (CH) working for ... [Read more]

Baxi 105HE CH & HW problem. please assist?

The boiler will sometimes fire up for c/h and h/w but not all the time. No flashing fault lights. Have tried r... [Read more]

new valve and pump fitted heating fine no hot water?

Just had an engineer to fit a new c/h pump and 3 way honeywell v4073a motorised mid position valve to a combi ... [Read more]

Baxi Bermuda radituda 552?

My Baxi Bermuda 552 been in the house over ten years, it has been serviced regularly. lately I have noticed wh... [Read more]

no heating or hot water ?

I think it is a pumped gravity system and there is no hw or ch, boiler fires up fine, all rads have been bled ... [Read more]

Potterton Profile 80E Boiler?

The system is fitted with a Honeywell ST6400 programmer.The boiler and the programmer are no longer communicat... [Read more]

no heating?

i have a domestic gravity fed pumped system with two mot. valves. the HW system works fine when controller dem... [Read more]