Alpha CD18R - 10 FAULT FINDING; 10.1 INITIAL FAULT FINDING CHECKS; 10.2 CENTRAL HEATING

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Alpha CD13R, 18R, 24R - Fault Finding

10 FAULT FINDING

10.1 CARRY OUT INITIAL FAULT FINDING CHECKS

1. Check that gas, water and electrical supplies are available at the boiler.

i.e. Inlet gas pressure = 20 mbar

Electrical supply = 230/240 V ~ 50 Hz

CH water system pressurised to between 0.75 and 1.25 bar, if installed in a sealed central heating system.

2. Carry out electrical system checks, i.e. Earth Continuity, Resistance to Earth, Short Circuit and Polarity with a suitable meter.

Note: These checks must be repeated after any servicing or fault finding.

3. Ensure all external controls are calling for heat and check all external and internal fuses.

4. Check that the gas and water pipework has been connected to the correct connections on the boiler and all valves are open.

However, before any servicing or replacement of parts ensure the gas and electrical supplies are isolated.

10.2 CENTRAL HEATING - Follow operational sequence

Alpha CD18R - 10 FAULT FINDING; 10.1 INITIAL FAULT FINDING CHECKS; 10.2 CENTRAL HEATING - OPERATIONAL SEQUENCE