came back of holiday notice 3 radiators not heating bled all the air out now boiler is not working tried replenishing as per maintenance book but nothing is happening ie opened isolayon valve dhw and ch inserted charging key to locked position opened tap watched gauge nothing happened. what have I missed
look at the fill line, somewhere is an inline valve that needs turning on with a screwdriver, it has the slot for screwdriver accross pipe, to turn on the slot is inline with pipe, but don't forget to turn it off afterwards
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