- Roberts-Gordon user guide heater CTCU 7, CTCU 11, CTCU 15, CTCU 22, CTCU 27, CTCU

SECTION 14: TROUBLESHOOTING
25
14.4 Troubleshooting for Solenoid Valves
14.5 Troubleshooting for Main Fan
Valve faulty.
Replace with one of
correct type.
Fault elsewhere.
If problems persist, contact
Roberts-Gordon Ltd. at
Tel: [phone]
www.rg-inc.com
Valve Operating
TROUBLESHOOT ENDS.
No
Ye s
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
Ye s
Does gas pressure at outlet
of the valve rise when
valve turns on?
No
Ye s
Is gas pressure at inlet of the
valve correct for gas type?
Note pressure found.
No
Ye s
START
If problems persist, contact
Roberts-Gordon Ltd. at
Tel: [phone]
www.rg-inc.com
Fan Operating
TROUBLESHOOT ENDS.
No
Fan motor faulty.
Replace with correct type.
Is there 230 V between
terminals L
1 and N?
Replace fan
delay thermostat.
Replace fan
delay thermostat.
Is power supply 230 V at
terminals T
1 to N?
No
Ye s
START
Does fan turn on and
off while burner is firing
continously?
No
Ye s
Does fan run
automatically?
No
Ye s
Ye s
For your safety and optimum heater performance, use only genuine ROBERTS GORDON
®
replacement
parts.
Conduct Commissioning procedure as shown on Page 15, Section 10.