Roberts Gorden DAT90, DAT75, DAT100, DAT115 Troubleshooting For Automatic Ignition Burner Systems

	SECTION 15: TROUBLESHOOTING
15.2 Troubleshooting For Automatic Ignition Burner Systems	WARNING
S4565C. They both have similar operating sequences. To
There are two burner controls used. Honeywell S4563C and
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.

					Electrical Shock Hazard
Start					Do not touch ignition components.
Are gas & electrical	No	Turn on supplies.			Voltage from ignition components is high.
supplies on?
					Failure to follow these instructions can
Yes					result in death or electrical shock.
				Have limit thermostats
Is the green light on?	No	Are external controls on?	Yes	operated or light faulty?
				Reset or replace as
				necessary.
Yes
		Press in lockout reset button
Is red lockout light on?	Yes	on rear of heater or remote
		reset button if fitted.
No

Does flue fan run? No

Yes
Does air pressure switch	No
change over?

Yes

Wait 30 - 40 seconds.

Is ignition spark operating? No

Yes
Does the flame light?	No
Yes
Is red lockout light on?	Yes

No

Heater Operating

TROUBLESHOOT ENDS. No

Is 230v supply at fan	Yes
connections?

No

Burner control faulty or plug in connections faulty. Repair or replace as necessary

Check for too much flue/air inlet

duct. Check for blockage in

combustion air circuit.

Check for faulty air pressure

switch. See section 16.5.

Is HT lead okay and

connected? Yes Is spark electrode okay?

Is the gas valve operating? No To test valve,

see Section 15.4.

Is the flame current at

least 1 µAmp DC when No the flame lights?

If problems persist, contact ROBERTS GORDON® at Tel: +44 (0) 1902 498733 or www.rg-inc.com

Flue fan faulty replace

Ignition control faulty replace.

See Section 15.6.

Replace valve.

Trace fault in supervision system. See Section 16.3.

For your safety and optimum heater performance use only ROBERTS GORDON® replacement parts.

Conduct Commissioning procedure as shown on Page 21, Section 11

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