Ariston SX 20 MFFICE Not Firing Pilot

[adshiel]

I have just replaced my central heating system with new radiators (not boiler.) I turned the boiler (the one above) off 6 days ago at the mains for both gas and electric.

Having refilled the radiator system, checked for leaks (none, which is good for my first time) and bled the radiators. I plugged in the bolier, pressurised it and pressed go to light the pilot ~ NOTHING.

I know the pressure relief valve need replacing because its leaking. The one thing I dont have on the system now is a room thermostat. I removed this because I have therm valves now. I also don't have the hot water connected to taps yet, just blocked the pipes.

Any help with this please? I read somewhere about bleeding the pump ~ would this stop the pilot lighting?

 

[breezer]

you cant have all trv's with out a bypass valve and also you must have a room stat.

you haven't mentioned turning the gas back on, but you shouldn't be touching gas unless you are corgi registered

I am sure some one will soon confirm this

 

[adshiel]

i have a hallway radiator without the trv but with two normal valves.

how does the room thermostat work then? if i don't have it does it stop the pilot working?

 

[breezer]

i knew it was here somewhere. see this

see 1st REPLY (by ChrisR)

 

[adshiel]

thx

understand it might be regs etc but what I am trying to eliminate is the cause of the not firing.

I will buy a new room stat as the old one was about 15 years old and would look naff in my new flat.

From the basic wiring diagram I have the room stat wires connect into the same slots as the timer. I can't see why this would prevent the Pilot firing.

 

[galwag]

is the fan working ?
ditto pump

 

[adshiel]

nope

the only thing that makes any noise is the clock

it ticks away patiently

other than that not a whisper when I switch it on

 

[adshiel]

I'm blown away..not literally and not be the boiler!

Ariston or MTS as they are now have given me some faith in customer service.

Getting through to them, talking to them and not being advised just to get a new boiler (the easy route nowdays for many companies.)

They recommend cranking the pump as it is likely to be stuck.

Lets wait and see

 

[adshiel]

The Fuse had gone that supplies the timer. Sorted