Bleeding test program. The heating circuit and hot water circuit (when
accessories are fitted) is bled via the automatic air vent (the cap on the automatic
air vent must be loosened).
Test program where the appliance is operated in full load after successful ignition
Test program where the appliance is operated with minimum gas volume (ignition
gas volume) after successful ignition
Test program for the safety temperature limit check; appliance heats up by
by-passing a regulating shut down through the flow regulator until the shut off
temperature of 97°C is achieved.
Filling test program. The diverter valve moves to the centre position
10.3 Resetting parameter to factory settings
Besides the option to reset individual parameters manually to the factory settings specified in
tables 10.2 and 10.3, you can also reset all parameters simultaneously.
● In the second diagnostic level, under the diagnostic number “d.96” change the value to 1
(see section 10.1.2).
The parameters of all adjustable diagnostic numbers now correspond to the factory settings.
11 Parts replacement
The tasks listed below in this section may be carried out only by a competent person approved
at the time by the Health and Safety Executive as stated in the Gas Safety (Installation and Use)
Regulations 1998.
● Only use genuine spare parts for repairs.
● Make sure the parts are correctly fitted and that their original position and alignment are
retained.
11.1 Safety instructions
WARNING:
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