Measurement:

Please select from the appropriate fault code below:
F00, F10, F71 Flow sensor related fault
F01, F11, F64 Return sensor related fault
F20 Safety switch off sensors or ignition arcing
F22 Low water pressure
F23, F24 Temperature differential incorrect
F26, F56 Gas valve without function
F27, F62 Safety switch off flame simulation/Gas switch off delay
F28, F29, F54 Ignition or Reignition fault
F32 Fan fault
F42, F70, F92 Coding resistor problem
F49 eBUS fault
F52, F53 Air mass sensor problem