DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL
15.3 Troubleshooting for Flame Supervision System
START
Connect a DC ammeter in series with the flame probe.
Is the green light on and at least 1 µA DC fame current?
Yes
Is there a current flowing in the flame probe circuit with no flame present?
No
Does “lockout” occur when there is a flame present?
No
Heater Operating
TROUBLESHOOT ENDS.
No | Use section 15.1 to |
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trace the fault. |
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| Is the connecting lead |
| Repair or replace as |
Yes | damaged? Is the flame probe | Yes | |
damaged or touching earthed | necessary. | ||
| components? |
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| Is inlet burner gas pressure |
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Yes | correct? Is live and neutral | Yes | Control box faulty. |
polarity correct? Is | Replace with correct type. | ||
| flame probe circuit correct? |
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| No |
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| Repair or replace as |
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| necessary. |
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| If problems persist, contact |
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| ROBERTS GORDON® at |
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No | Tel: +44 (0) 1902 498733 |
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| www.combat.co.uk |
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| or |
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NOTE: Minimum flame probe current 1 μA DC. Typical flame probe current
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