Observation:

Please select from one of the links below which type of XSOL diagnostic procedure you require:

CLICK HERE FOR IMPORTANT INFORMATION ON HOW TO RESET THE BOILER BEFORE CONTINUING
XSOL DIAGNOSIS FROM START SEQUENCE
This option will take you through the functional operation of the appliance.
XSOL DIAGNOSIS BY ENHANCED FAULT CODES
This option will take you through tests relevant to the fault code chosen.