SECTION 13: TROUBLESHOOTING
13.3 Troubleshooting for Flame Supervision System
To measure flame current, connect a 0 - 50 μA DC meter in series with the flame probe. If the meter reads negative values, then reverse the test leads.
START
Connect a DC ammeter in series with the flame probe.
Is the flame present and at least 1 μA DC flame 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.
| Use General |
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No | Troubleshooting section 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 | ||
required. | ||||
damaged or touching earthed | ||||
| components? |
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| Is inlet burner gas pressure |
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Yes | correct? Is live and neutral | Yes | Replace ignition control. | |
polarity correct? Is | ||||
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| flame probe circuit correct? |
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No
Repair or replace as
required.
If problems persist, contact
No | ||
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NOTE: Minimum flame probe current 1 μA DC. Typical flame probe current
33