Any Ariston boiler experts about?

[Grant76]

I have a fairly new Ariston boiler which when cold is giving me an E-02 error code (Loss of pressure)

All you have to do to remedy this is to get the pressure back up by filling it with water.

To save me calling Ariston then having to hang about for an engineer I was wondering if any of you knew the correct position for the two valves under the boiler, I get the impression they are not correct hence the loss of pressure

Many thanks

[sanshou1]

I am no expert but I have an old ariston combi, the two valves should be in the off position at most times. if the pressure is low turn them both to on untill you get to about 1 on the pressure dial.

[plg101]

My combi boiler needs both taps opening to allow the water into the system, until the pressure is about 1.25-1.50, then close the taps.

For me the radiators also needed bleeding (normally the radiators at the top of the house) - best done when the heating is on, and use a towel to catch the drips!

[Bruggy]

Try looking at the service/operation book which should have been left by the installer. There may be some setup or trouble shooting advice in there.

Or Google Ariston error codes or something similar.

[Parrot of Doom]

Check that the expansion vessel is correctly pressurised. Usually requires a bicycle pump (schraeder valve).

[Grant76]

Great, thanks guys!

[Grant76]

sanshou1 said:

I am no expert but I have an old ariston combi, the two valves should be in the off position at most times. if the pressure is low turn them both to on untill you get to about 1 on the pressure dial.

Thanks, do you happen to know which position is off? i.e. which direction the valves should be facing

Thanks

[911motorsport]

plg101 said:

My combi boiler needs both taps opening to allow the water into the system, until the pressure is about 1.25-1.50, then close the taps.

For me the radiators also needed bleeding (normally the radiators at the top of the house) - best done when the heating is on, and use a towel to catch the drips!

I'll second that. I bled loads of air from my upstairs radiators. I then repressurised the system to 1 bar cold (2 bar hot) and no loss of pressure since.

[moles]

If the pressure keeps going down then it is leaking somewhere either in the boiler, pipework to the rads or rad valves.

[10 Pence Short]

I thought these things just kept going on...and on...

[moles]

All the valves do is let water in from the mains to the rad side of the system. If they are in the wrong position the gauge on the boiler will either go up to the mains water pressure (ie over 3 bar) and will start leaking from the safety valve outlet (outside) or it will stay where you last left it when in closed position. There is no right or wrong position for the valve. It is either open or closed. The problem you have is as above, a leak on the system somewhere.

[JohnSW20]

Hi

I have an Ariston boiler and have had nothing but trouble, we got it because of the 5yr guarantee. I spoke to another engineer who told me they are nothing but trouble but we are stuck with. They have been out 7 times in the last year.

Good luck

John

[Grant76]

moles said:

All the valves do is let water in from the mains to the rad side of the system. If they are in the wrong position the gauge on the boiler will either go up to the mains water pressure (ie over 3 bar) and will start leaking from the safety valve outlet (outside) or it will stay where you last left it when in closed position. There is no right or wrong position for the valve. It is either open or closed. The problem you have is as above, a leak on the system somewhere.

Okey Doke

Cheers

[carmonk]

Yeah, I had that on my old boiler (the heating equipment, not the GF) - turned out to be air in the system. Initially I didn't know what it was so called out a local engineer. He bled the radiators, repressurised the system and explained to me what to do in future. He also found a minor unrelated fault which he fixed there and then. He was there about 45 minutes in all and I when I asked, "How much do I owe you?" thinking maybe £100 or even £200 - he replied "Forget it, I was passing anyway." He eventually accepted £10. That's what I meant in another thread when I said there are some spot-on tradesmen in Cumbria!

[Ferg]

As said, if you keep having to fill it then you probably have a leak. A VERY dirty system might make air (hydrogen, probably) which could be vented by the auto-air vent on the pump body.
Alternatively the bag may have ruptured in the pressure vessel. If this happens the pressure in the system will exceed 3 Bar when hot and push water out of the safety valve. When the system cools pressure will reduce dramatically.
The safetyvalve is the only other obvious place to look. If it's worn it's seating then it may allow water out before the 3 Bar limit.

Otherwise, you have a REAL leak. Upstairs would be showing through your ceilings if you've repressurised a few time. Is the pipework downstairs visible?? Any in a screed or below boards???

[sanshou1]

Grant76 said:

sanshou1 said:

I am no expert but I have an old ariston combi, the two valves should be in the off position at most times. if the pressure is low turn them both to on untill you get to about 1 on the pressure dial.

Thanks, do you happen to know which position is off? i.e. which direction the valves should be facing

Thanks

On Mine the off possition is when the valves are flat to the wall (handles pointing to the left. the on position is facing out at 90 degrees to the wall

Matt

[TIGA84]

sanshou1 said:

Grant76 said:

sanshou1 said:

I am no expert but I have an old ariston combi, the two valves should be in the off position at most times. if the pressure is low turn them both to on untill you get to about 1 on the pressure dial.

Thanks, do you happen to know which position is off? i.e. which direction the valves should be facing

Thanks

On Mine the off possition is when the valves are flat to the wall (handles pointing to the left. the on position is facing out at 90 degrees to the wall


Matt

Conversely, mine are the other way round, and closed when pointing at the wall.