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COMBAT
®
CTCU UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
22
SECTION 14: TROUBLESHOOTING
14.1 General
Replace axial fan.
If problems persist, contact
Roberts-Gordon Ltd. at
Tel: +44 (0)1902 498733
www.rg-inc.com
Heater Operating
TROUBLESHOOT ENDS.
No
Replace limit thermostat.
The limit thermostat has
tripped.
See Section 11.3.2.
No
Use 14.2 to test burner.
Has burner Locked Out?
Yes
No
With external controls on,
does the burner continue
through the heating cycle?
No
Yes
Does the fan run?
No
Use 14.5 to test fan.
Yes
Yes
Use 14.2 to test burner.
Is Red lockout
warning light on?
Yes
No
Turn on supplies.
Are gas & electrical
supplies on?
No
Yes
Start
Yes
WARNING
Explosion Hazard
Installation must be done by a registered installer/
contractor qualified in the installation and service of
gas-fired heating equipment or your gas supplier.
Failure to follow these instructions can result in death,
injury or property damage.
For your safety and optimum heater performance, use only ROBERTS GORDON
®
replacement parts.
Conduct Commissioning procedure as shown on Page 15, Section 10.