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Alpha CB50 - Fault Finding
10 SHORT PARTS LIST
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
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
Summary of Contents for Alpha CB50 Boiler
Page 29: ...29 9 WIRING DIAGRAMS 9 1 ILLUSTRATED WIRING DIAGRAM Alpha CB50 Wiring Diagrams ...
Page 30: ...30 9 2 FUNCTIONAL FLOW WIRING DIAGRAM Alpha CB50 Wiring Diagrams ...
Page 32: ...32 Alpha CB50 Fault Finding 10 3 DOMESTIC HOT WATER Follow operational sequence ...
Page 33: ...33 Alpha CB50 Fault Finding 10 4 FAULT FINDING SOLUTIONS A to F ...
Page 34: ...34 Alpha CB50 Fault Finding 10 5 FAULT FINDING SOLUTION SECTIONS G to L ...