Indicates a flame is detected on pilot before valve has started.
Possible reasons:-
• Carbon or other conductive contamination on spark electrode.
• Combustible material burning on pilot near electrode (carbon deposits etc.).
• If EASYTEST box used – simulate flame mode not operated correctly.
Indicates supply voltage is too low to operate valve.
Possible reasons:-
• Batteries are completely flat (random error codes may also be displayed in this case).
• Damaged battery contacts (dirty, corroded, bent – not making strong stable connections).
• Short circuit in external wiring or connected accessories.
• Defective mains power supply (if used) or damaged wiring.
• Problem with internal contacts of slide switch (sliding on/off multiple times may clear this issue).
• Batteries mounted incorrectly.
Indicates a device connected to TESC extension socket does not work correctly.
Possible reasons:-
• If nothing connected – are links missing, in wrong position, or connected badly?
• Failure in extension module connected to extension port.
E11, E12, E13, E18, E25, E28, E29, E30, E31, E33, E44, E45, E63
NOT APPLICABLE – SHOULD ONLY APPEAR DURING MANUFACTURE, IF AT ALL.
RESERVED FOR FUTURE USE.
Indicates buttons on valve (or wired control panel) do not work, or are incorrectly wired.
Possible reasons:-
• Buttons are sticking or blocked.
• Buttons are damaged.
• Cable damaged, or short circuit to ground (wired control panel).
NOTE: Disconnect wired panel (if applicable) and re-test to determine root cause.