Page 4
Normal heater operation
Start - Heater turned on.
- Heater performs check of safety systems.
- Combustion fan starts.
- Igniter sparks and gas valve opens.
- Burners ignite at low gas rate.
- Room fan starts approximately 15s after ignition.
Run - Heater continuously checks room and set
temperatures, and monitors all safety systems.
- Room temperature well below set temperature:
- High gas rate and room fan speed.
- Room temperature just below set temperature:
- Low gas rate and room fan speed.
- Room temperature reaches set temperature:
- Heater turns off.
- Set temperature can be adjusted by pressing up
or down buttons.
- ECO mode can be selected by pressing and
holding DOWN arrow for 3 seconds - green
indicator ON.
- CHILD LOCK can be selected by pressing and
holding UP arrow for 3 seconds - orange indicator
ON.
- Steam may be visible around flue terminal on cold
days - this is normal for high efficiency appliances.
- If a fault is detected the heater will shut down and
attempt a reset. If a reset is not possible the
heater will display an error message (see page 6).
Shut down - Heater turns off
- Burners turned off
- Room fan runs on high then low to cool heater
- Run-on time at each speed depends on actual
burner high and low on times
