vaillant ecotec plus 831 not responding to p tests

[g60rge]

can't test the boiler in full rate as when selected it doesn't respond, doesn't respond to anything in the p menu

board fault i presume. going back tomorrow, anyone had this before?

 

[Last Plumber]

Yes. Board, didn't change it though as all worked apart from test. Ran tap and tested it that way. May not have been full as it could be but good enough imo

 

[g60rge]

well the water pressure is soo low at this place i can't test water at full rate