What the manual says
Manufacturer manualEnable/disable internal programmer
From this model's manual
Verified against the Glow Worm/Glow Worm Ultracom 2 Cxi installation & service manual, page 36.
DIY fix possible
Check your external or internal timer settings to ensure they are programmed as desiredIf the boiler is operating normally, you can simply ignore this status messageIf the heating is not working, try resetting the timer or the boiler itself
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All 41 fault codes on the Ultracom 24cx 30cx
Seeing a different code? Every code this model can display, in one place.