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Main 24he not firing up

The boiler wont light its got ignition, but wont firer, have noticed both pins come out on the diverter valve, when it trys to go.

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: lw 50 ci boiler wont fire up

Found out there was a short on the ignation thanks

Posted on Nov 20, 2008

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  • 659 Answers

SOURCE: hot water boiler will not ignite

Check all your limit switches on this unit. One of them is either tripped or bad.

Posted on Apr 07, 2009

  • 150 Answers

SOURCE: heatslave diverter valve

clicking rads are due to pipe expansion when getting hot.
If the hot water [secondary circuit] gets hot and the boiler stays on [does not keep going on and off] even with a constant low water flow then the diverter should be ok.
there is a valve to prevent the primary circuit [central heating] [ CH] from sending water to the rads. this or its control may be at fault.
both the
Both the CH pipes to & from the boiler should have manual valves to turn off. do this then try the hot tap-full on. If the boiler goes into overheat mode and the overheat stat kicks in to turn the boiler off -- then :-
Check also the heat exchanger, it may be furred up especially if you are in a hard water area. It means taking it off and manually checking [pour water through] If you're lucky it will be just muck to be forced out with hose pipe pressure, if not a new one

Posted on Sep 06, 2009

  • 17 Answers

SOURCE: Combi boiler (vailant), pilot light not igniting;

hi there

does the fan start up?
sounds like a faulty gas valve. has there been an interuption in your gas supplie?
hope this steers you in the right direction

Posted on Dec 19, 2010

Testimonial: "The feedback is very helpfull. Kind Regards Tracey"

  • 1 Answer

SOURCE: I have a HEAT MAKER

Check the flow switch. Small black box lower left hand side as you face the from of the unit. Try to jump the connection and then see if it fires up. If it does, replace your flow switch. The flow switch prevent the boiler from firing because it is not sensing the water moving through the pipes. The boiler won't fire if water is not moving through it.

Craig @ Aggie Plumbing & Service

Posted on Jan 14, 2011

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First have you got a good flow from any cold tap? If yes then see below

If I remember there is a pipe carrying cold mains crossing the lower front of the boiler with an in line filter usually clogged. Remove clean & replace
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