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.

No

Yes

Yes

No

Use General

Troubleshooting section to

trace the fault.

Is the connecting lead

damaged? Is the flame probe damaged or touching earthed components?

Is inlet burner gas pressure correct? Is live and neutral polarity correct? Is

flame probe circuit correct?

No

Repair or replace as

necessary.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Repair or replace as

Yes necessary.

Yes Replace ignition control.

NOTE: Minimum flame probe current 1 μA DC. Typical flame probe current 3-5 μA DC.

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Roberts Gorden 200, 350, 150, 400, 300, 175, 225 250 service manual Troubleshooting for Flame Supervision System

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