To Next PageTo Next PageWhat to do if fault codes are present on Vaillant home combi Boiler?
If fault codes (F.XX) are present on your Vaillant Boiler, refer to the table in the appendix for advice or use the check programme(s).
How to safely prepare Vaillant Boiler for repair work?
To prepare your Vaillant Boiler safely for any repair work, switch off the product and disconnect it from the power mains.
Warnings about actions and their consequences.
Dangers from unqualified personnel during assembly, installation, or maintenance.
Covers risks from gas, flue gas, electric shock, materials, and frost.
Procedures for connecting gas, water, and drain lines.
Steps for performing the electrical installation of the unit.
Procedures for initial start-up and checking factory settings.
Ensuring correct heating water quality and managing water pressure.
Adjusting gas settings, checking flue gas, and flushing the heating installation.
Guidance on resolving faults, accessing/clearing fault memory, and resetting parameters.
List of fault codes, their meanings, and possible causes.
Table outlining required inspection and maintenance tasks and intervals.
Checklists for boiler installation, commissioning, and service records.
General