BOILER PROBLEMS Information, help and advice on many gas related subjects from gas fires to domestic appliances

[wiskenc]

I HAVE A POTTERTON HEAT MAX COMBI BOLIER
AND WE HAVE ERROR CODE E133 FLASHING ON THE DISPLAY SCREEN WHAT SHOULD I DO

[htg engineer]

E133 is gas pressure/no gas problem.

Could be a few things, most likely cause is the spark gap on electrodes, common problem caused by a design fault as the two probes bend together after a while.

You need an RGI to check gas meter/pressures as the low temperatures can affect gas meters especially if outside.


htg