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We have old 'inherited' Ferroli Combi Boiler ( 15 years old) the original clock has been replaced has the following: Auto ( with slide to on /off ) Auto(also with slide' has a clock;'one and 'P' the other Assume one is time other programme Below that is a digital readout of time Then 3 buttons: one with a 'P' below One with a + below One with a - below At right hadn side there is an @override This marked with arrow facing both ways then the right hand end with an arrow onit Can you advise how to set a simple ' time to come on in the morning 7.00am And go off at 5.00pm Clearly it has options for 7 days of setting but we are not bothered about that Any help you can giv eis very much appreciated

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Posted on Jan 02, 2017

Buffalo12980
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SOURCE: glow worm combi boiler

check the pilot line for an obstruction. check the millivolt generator that's supposed to keep the pilot valve open. check for a high limit control being bad.

Posted on Dec 27, 2007

  • 333 Answers

SOURCE: require room thermostat for ferroli combi boiler

almost any thermostat you install will have the 2 wires that you are looking at It depends on how in depth you want to get with your thermostat. Home depot will have what you need. I hope this helps. Don't forget to rate my answer.

Posted on Feb 18, 2009

  • 2 Answers

SOURCE: my boiler keeps firing up

I had the same problem. I traced it to the micro switch in the water/central heating motorised valve having shorted out.

I replaced the (Honeywell) motorised valve and it is now only running when it should.

Jo

Posted on Apr 23, 2009

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SOURCE: I have a Honeywell ST499A/ST699B

I have an old Honeywell ST499A/ST699B thermostat. It still works OK but when we have a power cut I have to re-programme everything. Presumably this is because the battery needs replacing. I cannot find a way of opening the control box to get into the unit to replace the battery and in any case I’m not sure if the battery is renewable?

Posted on Dec 28, 2009

  • 2460 Answers

SOURCE: my worcester 240 combi boiler. when heating goes

check the water pressure on the combi could be low or in the back of your manuel there is a fault finding guide which is very good and simple to follow .

Posted on Oct 02, 2010

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