Operation Manual

12
Normal Operation: Flame symbol will be displayed whenever the
boiler is  ring. The bars to the right of the displayed temperature
visually indicate the level of modulation at the boiler. 1 bar =25%,
2 bars = 50% etc.
Holiday Mode: When thermostat is put into, or taken out of holiday
setting the LCD will  ash for 20 seconds.
Alarm Mode: Should a fault occur with the boiler the LCD will
display Er (or Er + associated error code if boiler functions support)
to warn of failure. For details of errors codes please consult your
boiler manual.
User Instructions
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