The manual for this boiler states that the ionisation current should be between 3μA and 9μA. On my newly installed boiler, upon ignition the current runs up over a short period to typically reach around 9.6μA to 9.7μA.
Is this apparently slight variance anything to be concerned about? Or is it just that the flame detection is working very well?
Is this apparently slight variance anything to be concerned about? Or is it just that the flame detection is working very well?