What the manual says
Manufacturer manualNA - None
From this model's manual
Verified against the Vokera Vibe 20a 25a installation & service manual, page 6.
DIY fix possible
Check your room thermostat is turned up high enough to request heatEnsure your heating timer or programmer is currently set to an 'ON' periodTurn on a hot water tap to see if the boiler fires up
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