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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Roberts Gorden DAT90, DAT75 Troubleshooting For Automatic Ignition Burner Systems, Result in death or electrical shock