Need some help with a heating system. I fitted Pegler TRV's to the system and at the same time removed all rads and flushed out rust/sludge in the rads. Put everything back together, released the ball cock in the attic and fixed any leaks, also added inhibitor and leak sealer ( I have a mysterious leak which comes and goes, but the system works anyway). Since fitting the TRV's, the boiler will heat, pipes heat from the boiler, but the rads won't heat. Turned up the TRV's to maximum. so they should be opened. Didn't adjust the lockshields during the fitting of TRV's, as I was draining the system, so, they should be fine. The pump sounds like it's working. Any thoughts?
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