I have a valiant turbo max with the white button and digital diplay it gave me a f 29 I change the air switch then 4 weeks later some problem change it again went for another 8 weeks. ive change it again bit also the two pin that hold thes the blue and white tubes in the fan but still the same any ideas

panicos georgiou, March 2008

f29 is gas on but went out, f28 is ignition/gas failure, possible gas pressure problem, flue problem or fault with pcb/electrodes

boilerman, March 2008

f29 is gas on but went out, f28 is ignition/gas failure, possible gas pressure problem, flue problem or fault with pcb/electrodes

boilerman, March 2008

f 29 on the turbo max is no gas, do you have a card meter, you need to get the gas supply/standing and working pressures checked first.

gary.wright53@googlemail.com, March 2008