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Home > Heating, Home Heating Systems > Question
heating, home heating systems, central heating, heating, cold, heating system, radiator

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Fixing a jaguar boiler , again!?

I have a jaguar boiler!. Dont laugh but i,ve trouble again. When running a bath the boiler stops providing hot water after 5 mins and sometimes shows f1. The heating is fine so problem with domestic hot water!. Any answers welcome and yes there usless. Buy cheap buy twice hmm !. Cheers

Short Wheel Base
October 2009

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hi sounds stupid but dont know wether its me or its the boiler. but the heating side has been off all winter and now the heating wont work dont know if ive set it wrong or the heating side has packed in

suggy
September 2010
F1 is also a boiler overheating fault code. If hot water is only coming intermittently or boiler keeps firing on and off then this can be because the plate to plate heat exchanger is blocked/partially blocked. This means the heat cannot be passed from the incomming cold water and so is retained in the boiler circuit resulting in excessive heating and the burner shutting down. I had this and after removing flushing and descaling the plate to plate heat exchanger it worked perfectly. PS I also used metal cleaner/rust remover to remove the black scale deposits from the heat exchanger.

Mark
November 2009
See my comprehensive list of jaguar fixes under the heading (Jaguar boiler showing f1)
Your problem is 99% the diaphram in the diverter valve
dont be put off by "you need a new diverter valve at £100+" as the diaphram is plumb centre (glow worm Same maker Part and is p/n 0020027602 at £6.50. simple to install as the diaphram unit comes off the valve two clips and two screws. 1/2 doz screws to dismantle drop in the new rubber diaphram and reassemble.
Also check the domestic hot water switch on the end of the diverter valve black box held in by a sliding metal clip (all in my fixit as mentioned above)
If its the switch its maplins part number N95AQ at £1.99 as opposed to £11.60 from plumb centre. See my fixit as mentioned) last of all dont forget to switch off the power and water before attempting either.
Hope this helped

Tom
November 2009

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