We have a Vokera Compact 28 boiler, when we turn on the taps, or the shower the water doesnt stay warm for long and the boiler goes on and off, making the water fluctuate in temperature. We have tried changing the setting but nothing is helping, any ideas?

Whipple, December 2009

under the boiler on the far right hand side is a black headed tap on the cold inlet to the boiler this is cold water entering the boiler, with a hot tap open, boiler switched off, turn it off bit by bit til the hot water flow from the tap gets down to a slower rate about half of what it was. turn the boiler back on and see if it stays hot now and report back.
not a fix just wanna know outcome to guide

ste, December 2009