Roberts Gorden UHD[X][S][R] 150 User Manual

31

Valve faulty.

Replace with one of 

correct type.

Fault elsewhere.

Correct pressure problem.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Valve Operating

No

Yes

Valve or ignition control

faulty. Replace with 
one of correct type.

Does gas pressure at

outlet of valve return to zero or 

lower when valve turns off?

No

Yes

Does gas pressure at outlet

of the valve rise when 

valve turns on?

No

Yes

Is gas pressure at inlet of the 

valve correct for gas type?

Note pressure found.

No

Yes

For optimum heater performance, use only replacement parts sold and supplied by Roberts-Gordon.

Conduct start-up procedure as shown on Page 21, Section 10.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Blower Operating

No

Blower motor faulty.

Replace with correct type.

Check blower motor leads 

for loose connections.

Correct power

supply problem.

Yes

Does 

blower 

turn on and

off while burner is firing 

continuously?

No

Yes

Does flue blower run

automatically when there

is a call for heat?

No 

Yes