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COMBAT
®
CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL
32
SECTION 15: TROUBLESHOOTING
15.1 General
If problems persist, contact
ROBERTS GORDON
®
at
Tel: +44(0)121 506 7709
www.rg-inc.com
Heater Operating
TROUBLESHOOT ENDS.
No
Check for mis-wiring.
Change time delay relay.
Check time delat relay. Is
there 230 V accross brown
and blue wires?
Yes
No
No
Yes
Check limt thermostat(s);
Reset.
No
No
Use 15.2 to test burner.
Yes
Yes
Use 15.2 to test burner.
Is Red lockout
warning light on?
Yes
No
Turn on supplies.
Are gas & electrical
supplies on?
No
Yes
Start
With external controls on,
does the burner continue
to fire?
Is distribution air fan
operating?
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 24, Section 11.
Installation Code and Annual Inspections: All
installations and service of
ROBERTS
GORDON
®
equipment must be performed by a
contractor qualified in the installation and service
of equipment sold and supplied by Roberts-
Gordon and conform to all requirements set forth
in the
ROBERTS GORDON
®
manuals and all
applicable governmental authorities pertaining to
the installation, service and operation of the
equipment.
To help facilitate optimum performance and safety,
Roberts-Gordon recommends that a qualified
contractor annually inspect your
ROBERTS
GORDON
®
equipment and perform service
where necessary, using only replacement parts
sold and supplied by Roberts-Gordon.