Roberts Gorden CTCU Troubleshooting for Solenoid Valves, Troubleshooting for Main Fan, Start

SECTION 14: TROUBLESHOOTING

14.4 Troubleshooting for Solenoid Valves

START

Is gas pressure at inlet of the valve correct for gas type?

Note pressure found.

Yes

Does gas pressure at outlet

of the valve rise when

valve turns on?

Yes

Does gas pressure at

outlet of valve return to zero or

lower when valve turns off?

Yes

Valve Operating

TROUBLESHOOT ENDS.

No Fault elsewhere.

Valve or ignition control

No faulty. Replace with one of correct type.

Valve faulty.

No Replace with one of correct type.

If problems persist, contact

No	Roberts-Gordon Ltd. at
	Tel: +44 (0) 1902 498733
	www.rg-inc.com

14.5 Troubleshooting for Main Fan

START

Does fan run

automatically? No

Yes

Does fan turn on and

off while burner is firing Yes continously?

No

Fan Operating

TROUBLESHOOT ENDS. No

Is power supply 230 V at	No	Is there 230 V between	Yes	Replace fan
terminals T1 to N?		terminals L1 and N?		delay thermostat.

Yes

Fan motor faulty.

Replace with correct type.

Replace fan

delay thermostat.

If problems persist, contact

Roberts-Gordon Ltd. at

Tel: +44 (0) 1902 498733

www.rg-inc.com

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

Conduct Commissioning procedure as shown on Page 15, Section 10.

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