What can cause a Keston boiler to fail?

C36 Combi Gas Boiler Error Codes Fault Code Possible Cause E01 Ignition failure – the boiler has attemp E02 False flame – possibly a problem with th E03 Boiler overheat – check that any valves E05 Fan failure – boiler cannot detect fan r

Why is my Keston C40 in error mode?

has entered this error mode it will not attempt to restart until the “Reset” button is pressed. Flame detected when not expected. Check boiler earth and probe condition. No ignition after restart. Check gas supply, gas valve operation and ignitor Thermal fuse blown or flue overheat thermostat activated. Maximum return temperature exceeded.

What does an error code E03 E44 mean?

If the fault is persistent or more severe the boiler will lockout with a error code. has entered this error mode it will not attempt to restart until the “Reset” button is pressed. Flame detected when not expected. Check boiler earth and probe condition. No ignition after restart. Check gas supply, gas valve operation and ignitor

What does 9 NN mean on a Keston boiler?

During this block time the block code will be displayed, alternately with the code “9 nn”, where nn is the boiler flow temperature) error codes (if the fault is persistent or more severe the boiler will lockout with a error code. When the boiler has entered this error mode it will not attempt to restart until the “Reset” button is pressed)

What is the fault code for a Keston C40?

Thermal fuse blown or flue overheat thermostat activated. Maximum return temperature exceeded. Check circulation. Flow temperature increased too quickly. Check water circulation. Fan not rotating – check fan connection and fan for fault. Difference between flow and return temperatures too high. Check circulation.

What does it mean when boiler has an error code?

If the fault is persistent or more severe the boiler will lockout with a error code. has entered this error mode it will not attempt to restart until the “Reset” button is pressed.