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

 

Use General

at least 1 µA DC flame

No

Troubleshooting section to

current?

 

trace the fault.

Yes

 

 

Is there a current flowing in the

 

Is the connecting lead

Yes

damaged? Is the flame probe

flame probe circuit with no

damaged or touching earthed

flame present?

 

components?

 

 

No

 

 

Does “lockout” occur when

 

Is inlet burner gas pressure

Yes

correct? Is live and neutral

there is a flame present?

polarity correct? Is

 

 

 

flame probe circuit correct?

 

 

No

 

 

Repair or replace as

 

 

necessary.

No

 

 

Heater Operating

 

If problems persist, contact

No

Roberts-Gordon, LLC at

TROUBLESHOOT ENDS.

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.

29

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

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