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Plumberpro
Plumberpro, Mechanical Engineer
Category: HVAC
Satisfied Customers: 634
Experience:  Over 20 years experience in plumbing heating and gas
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I have a Vokera Pinnacle 16 which heats the radiators ok. When

Customer Question

I have a Vokera Pinnacle 16 which heats the radiators ok. When it shuts off on the room stat and cyl stat the boiler continues to cycle with a few seconds of the flue fan (purge). Then the dis;ay cycles between Waiting for fan (5), Pump over-run (7). This continues until either stat calls for heat or the boiler is isolated.
Submitted: 1 year ago.
Category: HVAC
Expert:  Plumberpro replied 1 year ago.
Hi , sounds like pcb issue. Change the board