E33,34,35,37,38,39,40,41,42 - Meaning
Occurs when the internal valve piston is having trouble moving.
Possible reasons:
Contamination of valve inlet / outlets with debris from supply pipe or other.
Physical damage of the valve
Note: After cleaning etc, before resetting these error codes allow the fire to cool down. Upon starting the valve will
reinitialize and perform a self recalibration and needs to be cold when doing this recalibration.
Note: If the valve needs replacing, check the pipework for contamination to avoid repeated problems.