Roberts Gorden DAT100 Troubleshooting for Flame Supervision System, Start, Troubleshoot Ends

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
	trace the fault.
	Is the connecting lead		Repair or replace as
Yes	damaged? Is the flame probe	Yes
	damaged or touching earthed		necessary.
	components?
	Is inlet burner gas pressure
Yes	correct? Is live and neutral	Yes	Control box faulty.
	polarity correct? Is		Replace with correct type.
	flame probe circuit correct?
	No
	Repair or replace as
	necessary.
	If problems persist, contact
	ROBERTS GORDON® at
No	Tel: +44 (0) 1902 498733
	www.combat.co.uk
	or www.rg-inc.com

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

32