I had to disconnect wiring from programmer back plate and did not make a good note of connections but when wired back up the boiler won't fire up for central heating (pump does not come on); hot water will come on OK except the boiler starts to knock and bang after 2 minutes and kicks out
A total five cables come into the back plate 2 white and 3 grey
They are fed into back plate as follows
1st grey cable is for feed Live and Neutral (this comes from a fused box)
1st white cable connects to Live and Neutral
2nd grey connects to back plate as red (4), Yellow (3) and blue (1)
3rd grey has Blue (1), Yellow to blue on 2nd white cable and red to brown on 2nd white cable
Hope you can understand above, any ideas what problem may be with wiring that central heating pump will not kick in?
A total five cables come into the back plate 2 white and 3 grey
They are fed into back plate as follows
1st grey cable is for feed Live and Neutral (this comes from a fused box)
1st white cable connects to Live and Neutral
2nd grey connects to back plate as red (4), Yellow (3) and blue (1)
3rd grey has Blue (1), Yellow to blue on 2nd white cable and red to brown on 2nd white cable
Hope you can understand above, any ideas what problem may be with wiring that central heating pump will not kick in?
