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Mend Vokera Pressure Boiler Linea 28

I keep losing pressure when the boiler clicks off timer (vokera linea 28)?

vokera linea 28, the boiler works fine when it is heating the water and the centrel heating as normal. but when i clicks off timer it drops to 0 and then code 04 pops up (insufficient water pressure)
when i top it up it takes seconds, then the boiler works fine. please can anyone assist thanks.

sophle
December 2007
thank you terry, i tryed that and it worked. thank you so much! for your help i can have heat again. sophie

sophie
December 2007
hi,,
your problem relates to the insufficient air cusion in the systems expansion vessle located at the rear of the boiler.
you will need to pump in more air via the vessles shrader valve, pump in air with a foot pump untill your system gauge reads 1.5 bar or in the green sector if your boiler has one.
this should cure the problem.
this procedure is normanly carried out at a service interval at the boilers annual service....

hope it helps.

terry ellis
December 2007

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