firing

Hi Chaps, We've just had a new boiler/system installed by a plumber and it was wired separately by a qualified electrician, the electrician wired this as per the Vaillant manual. The system is fully filled and vented but when trying to call for heat or water via the stats nothing seems to...

good morning folks, We moved into a new house about 4 months ago and straight away swapped the old danfloss programmer with a 3rd generation nest thermostat. I am super happy with it and know we are saving a bucket load of oil using it. One quirk of it is that once or maybe twice and hour the...

ok - I'm on holiday at the moment and I can't get to the boiler to try anything at the moment but this is bugging me so I'd like your opinions on probable causes/remedies. Just a few hours before I left for my holiday I got called to a breakdown of a Worcester heatslave because it had started to...

I put this problem to the forum 3 weeks age and everyone said I should get the installer back. I did that and he could not find a problem. I also had British gas out twice (I have a yearly maintenance contract with them) and the first man changed the motor on the Honeywell 3 port valve -...

I have a strange problem (to me). Sometimes the new Worcester 18RI does not fire up when I would expect it to, for example. I came home last night and the Hive was showing an actual room temp of 19 deg with a set point of 21 deg. The boiler was on, with the inlet and outlet temps of around 35...

Can anyone help I posted this in the central heating forum and was advised to try this forum instead. It's looking like this is my last attempt at a diagnosis before calling out an oftec engineer My problem 1. I came back from a weekend away to find my boiler with no pressure and a...

Hi guys, this is my first post so please let me know if I'm not in the right place for this posting. My problem 1. I came back from a weekend away to find my boiler with no pressure and a circulating pump making a strange noise, no lockout was showing. 2. I changed out the pump, found why the...

Hi, our power tripped and the boiler wouldn't fire after this happened, I bought a new photocell as this failed some years ago, however I have noticed recently that on start up it has made a noise like a slipping fan belt, not exactly a squeal but it's there, I changed the photocell and it still...

Hi all i would really like some advice please 2 zone heating 1 upstairs 1 downstairs on an ideal combi boiler 2 Honeywell cm707 programmable stats one for each valve wired to Honeywell junction box(wiring centre) as follows perm live from fused spur to term 1 perm live from term 1 to boiler...

Hi everyone, We recently had a new Vailant ecoTec Plus 630 boiler and Joule unvented cylinder installed, and overall everything works - we get hot water and heating at the right times. But a few times now we've noticed the boiler and cylinder both loudly firing up in the middle of the night...

Hi there.. So, after flushing my boiler system to release what appears to have been an airlock in some pipework (had a very satisfying splutter and huge surge of black muck out of the drain valve) for my new radiator...(previous thread), I have today gone and bought some Central heating...

My Ideal Icos is not firing up for either heating or water it just shows 0 in the display. If I turn it off then back on it fires for a couple of seconds shows 3 in the display then stops and goes back to 0. There is a Smart Energy Master attached and it shows All Off which isn't its usual...

Hi guys I've been ut to a boiler and it keeps firing up .when programmer is turned off .on heating and hot water.but there still power to both 2 x Port valves .and pump / boiler .there no frost stat . any ideas ?

Hi everyone, My family has just taken on a rental in Scotland. We've moved from Australia and don't have experience with gas central heating at all. The place we rented has a Sime Friendly Format 80 that does instant hot water and central heating. The agent had it inspected just before we...

Hi there, firstly apologies for having a rubbish boiler but can't afford a replacement yet. If I run a tap the boiler makes all it's usual start up noises, the burner light flickers but then goes out. No ignition sound and the boiler runs with just cold water. The fan runs. Have recently...

I recently drained down my pressurised system in order to move a radiator. I've now refilled the system and did a quick check and the boiler fired for central heating / hot water and it fired OK. I then switched off the hot water/central heating at the controller and left it. Later on when...

Got a Format combi playing up, fan spins but fails to fire. It's sparking and sending intermittent power to the gas valve. Thinking pcb or fan. Any pointers before I call Sime tomorrow?

Had this come up again last week, and just wanted to pass on this tip: If you come to a Riello RDB burner which has the motor running but does not attempt to fire, or takes a long time to fire, it can either be the photocell or the motor. Most often it is the photocell. To test, pull the...

My home boiler is not firing the burner on either DHW or heating, on CH demand the pump starts but no burner, it has plenty of oil and no lockout light I am a GSR engineer but know very little about oil boilers.

Hiya guys I had a issue with diverter valve on my combi so I replaced the diaphragm in it. Trouble is my boiler is not firing up now when I call hot water or heating. I am thinking it could be flow switch, if so any way I can test it