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5.2 Controller Functions
The following is a brief explanation of the main controller buttons and icons labelled
above:
1. The “ON/OFF” switch is used to switch on mains electric power switch.
2. The LED display shows boiler temperatures and other system information
explained in section 5.3
3. The “START” button engages the boiler for use (once the mains power is
switched on (see 1 above)
4. The “P” button is used to view system information and parameters. Pressing this
button for three seconds and the first system information P1 will appear.
5. The “+” button is used to ‘toggle’ through system information and to increase
figures during the setup operation.
6. The “STOP/-“button switches off the boiler if it is held down for 3 seconds
7. “GLOW” button is used to maintain an ember fire for up to 12 hours
8. If the “FUEL” light comes on it means that the boiler is running low on fuel, or that
the boiler has not fired up successfully
9. The “FAN” led indicates that the fan is running
10. The “ERROR” light flickers when a system error has been identified. The relevant
error code number will appear on the LCD screen, which are;
E1. Boiler sensor error
E2. Flue gas sensor error
E3. Error with upper sensor of the first accumulator tank
E4. Error with lower sensor of the last accumulator tank
E5. Error with sensor for the hot water tank
E6. Error with room stat sensor
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