SECTION 14: TROUBLESHOOTING

14.3 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 No current?

Yes

Is there a current flowing in

the flame probe circuit with Yes no flame present?

No

 

Does “lockout” occur when

Yes

there is a flame present?

 

No

Heater Operating

No

TROUBLESHOOT ENDS.

 

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

required.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Repair or replace as

Yes required.

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 75, 100, 125 service manual Troubleshooting for Flame Supervision System

125, 100, 75 specifications

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