Help - 14 yr old compactcombi Vaillant 242 eh
DHW - works fine
Heating - when switched on, fan runs, pump runs but no sparking hence no flame ignition
If I carry out a reboot i.e, with the Boiler on and the Heating/DHW switch on DHW only, I then switch off main power supply to boiler, then switch off the main switch on boiler
and then switch on main supply back on then switch on main switch on boiler then switch from DHW to DHW/Heating it then seems to runs as normal i.e fan runs/pump runs, Temp gauge goes up to approx 35/40c then flame ignition and flame modulation (this takes about 20 secs)
Has had flame supervision board, diverter valve, complete water section and servo control valve replaced in last 2 years
Any help appreciated!
DHW - works fine
Heating - when switched on, fan runs, pump runs but no sparking hence no flame ignition
If I carry out a reboot i.e, with the Boiler on and the Heating/DHW switch on DHW only, I then switch off main power supply to boiler, then switch off the main switch on boiler
and then switch on main supply back on then switch on main switch on boiler then switch from DHW to DHW/Heating it then seems to runs as normal i.e fan runs/pump runs, Temp gauge goes up to approx 35/40c then flame ignition and flame modulation (this takes about 20 secs)
Has had flame supervision board, diverter valve, complete water section and servo control valve replaced in last 2 years
Any help appreciated!