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 Post subject: Thermostat problem
PostPosted: Sun Dec 04, 2016 10:17 pm 
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Hi All, I've got an Ariston E-30 combi boiler controlled by a Honeywell wireless room thermostat.

The heating does not get as hot as it should most of the time and adjusting the stat in the hall does not seem to make any difference. If i turn the stat right back to zero the light on it will flash then if I turn it up to say 20 the boiler will fire up and run and the rads get warm but the boiler seems to cut out before a reasonable temperature is reached (still quite cold where the stat is located) if I then repeat turning the stat back to zero then back up again the boiler will fire but not stay fired up long enough to get to the correct temperature. If I do not turn the stat back to zero first and increasing from say 20 to 30 it has no effect, the boiler does not fire up. The rads do not need bleeding and water circulation seems good. Does this sound like the room stat is faulty? Thanks for your help.


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 Post subject: Re: Thermostat problem
PostPosted: Mon Dec 05, 2016 8:05 am 
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Have you checked what temperature the boiler thermostat is set to?

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 Post subject: Re: Thermostat problem
PostPosted: Mon Dec 05, 2016 8:45 am 
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gas4you wrote:
Have you checked what temperature the boiler thermostat is set to?


Hi Dave,

Thank you for that it may well be the problem as the property was empty for a couple of years till we moved in this July, the only strange thing is that it's inconsistent (some days the heating works better than others). Is the boiler stat easy to access/adjust on the ariston E-30?


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 Post subject: Re: Thermostat problem
PostPosted: Mon Dec 05, 2016 8:53 am 
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Neb wrote:
gas4you wrote:
Have you checked what temperature the boiler thermostat is set to?


Hi Dave,

Thank you for that it may well be the problem as the property was empty for a couple of years till we moved in this July, the only strange thing is that it's inconsistent (some days the heating works better than others). Is the boiler stat easy to access/adjust on the ariston E-30?
Neb wrote:
gas4you wrote:
Have you checked what temperature the boiler thermostat is set to?


Hi Dave,

Thank you for that it may well be the problem as the property was empty for a couple of years till we moved in this July, the only strange thing is that it's inconsistent (some days the heating works better than others). Is the boiler stat easy to access/adjust on the ariston E-30?


ps, Is the boiler stat the dial on the front? if so I have tried that turned fully up. The lights on the boiler shows it gets nice and hot plus the pipe leaving the boiler gets up to temperature really well but it just does not seem to want to continue firing, it has a blast, warms the rads then shuts down.


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 Post subject: Re: Thermostat problem
PostPosted: Mon Dec 05, 2016 8:19 pm 
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It sounds as if there may be some sort of circulation problem then and you might need professional help to sort it.

There will be 2 stats on the front, one for hot water and one for the heating circuit.

It is the heating circuit that needs to be turned up.

Checked all the rad valves are actually open?

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For this message the author gas4you has received gratitude : Neb
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 Post subject: Re: Thermostat problem
PostPosted: Thu Dec 08, 2016 4:42 pm 
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Thanks for your help Dave, the main problem did turn out to be the boiler stat, I've left it pretty well full up for a couple of days and it's running much better, the other complication is I think there is still some crud in the system although I have run some X300 (I think that was what it was called) through the system , it did improve a lot afterwards.


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 Post subject: Re: Thermostat problem
PostPosted: Thu Dec 08, 2016 5:53 pm 
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X300, if you have remembered correctly, is for new systems up to 6 months old.

What you should be using is X800

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