on the front ov my boiler on the lcd panel f4 is flashin wot does this mean

michael, July 2009

our boiler says F13 any help please?

cafe de luca, November 2010

In my handbook for myThema Condens F 30 E the fault codes read F1, F4 indicates Ignition fault, boiler fails to light. Possible causes are :-No gas / Insufficient gas
Incorrect gas valve adjustment
Electrode ignition lead defect
Electronic igniter defective
Check air inlet duct and connections to ignitor unit

George, October 2009

Not 100% sure, but think it's an ignition lockout fault. Possible faults are no gas, faulty gas valve, faulty ignition.

Ian, July 2009