When I ordered my last new boiler, one of the items in my specification for it, was that it should have a proper diagnostics display panel (Vaillant), rather than flashing lights and counting the sequence to try to translate it.
I also find it handy for day to day use to, so I have a bit of a clue what it is doing.
I'm likewise a bit obsessive about being able to access my cars own diagnostics for its various systems. I have always carried the diagnostic kit in my boot, for over 30 years, just in case, though I have never needed it.
On my previous more rudimentary heating controls, I fitted several LED's as a warning light system, so I could at a glance know what my heating system was doing and quickly diagnose faults.
I also find it handy for day to day use to, so I have a bit of a clue what it is doing.
I'm likewise a bit obsessive about being able to access my cars own diagnostics for its various systems. I have always carried the diagnostic kit in my boot, for over 30 years, just in case, though I have never needed it.
On my previous more rudimentary heating controls, I fitted several LED's as a warning light system, so I could at a glance know what my heating system was doing and quickly diagnose faults.