Observation:
The code numbers reveal what the appliance is doing during different stages of an operating cycle.
The following are the stages for heating operation:-
S.1 - Fan running and proving
S.3 - Ignition
S.4 - Burner operation heating
When external heating controls are satisfied the following sequence appears:-
S.5 - Pump and fan overrun
S.7 - Pump overrun
S.8 - Anti Cycling Control
S30 - External controls satisfied
Anti-cycling 'economiser' control:-
The boiler has a built in anti-cycling control to ensure that energy wasteful short cycling of the boiler cannot occur.
This control prevents the boiler from re-igniting for a pre-set period of 5 minutes after operation.
To temporarily override the anti-cycling turn the main ON/OFF control to OFF position and then back to ON position.
The following are the stages for heating operation:-
S.1 - Fan running and proving
S.3 - Ignition
S.4 - Burner operation heating
When external heating controls are satisfied the following sequence appears:-
S.5 - Pump and fan overrun
S.7 - Pump overrun
S.8 - Anti Cycling Control
S30 - External controls satisfied
Anti-cycling 'economiser' control:-
The boiler has a built in anti-cycling control to ensure that energy wasteful short cycling of the boiler cannot occur.
This control prevents the boiler from re-igniting for a pre-set period of 5 minutes after operation.
To temporarily override the anti-cycling turn the main ON/OFF control to OFF position and then back to ON position.
