SECTION 13: TROUBLESHOOTING
SECTION 13: TROUBLESHOOTING 13.1 General
WARNING
Explosion Hazard
Installation must be done by a registered installer/ contractor qualified in the installation and service of
Failure to follow these instructions can result in death, injury or property damage.
Start
Are gas & electrical
supplies on?
Yes
Does axial fan run
immediately upon supplying
power to heater?
No
Is ignition control showing a
"2 flashes" led code?
No
Does the combustion
fan run?
Yes
With external controls (i.e. thermostat) on, does the burner continue through the heating cycle?
Yes
Heater Operating
TROUBLESHOOT ENDS.
No
Yes
Yes
No
No
No
Turn on supplies.
Wait
stop running?
No
Replace temperature
limit switch.
Burner has locked out due
to ignition failure. Use
Troubleshooting for Automatic
Ignition Burner Systems section to test burner.
Use Troubleshooting for
Combustion Fan section to
test fan.
Has burner “Locked Out”? No
Yes
Use Troubleshooting for Automatic Ignition Burner Systems section to test burner.
If problems persist, contact
Fan and limit switch are
operating normally.
The limit switch has |
|
|
tripped. See Manual Reset | No | Replace limit switch. |
Limit Switch Figure. |
|
|
Yes
Ensure proper air flow clearance for axial fan. Open louvers slightly.
Replace axial fan if it does
not operate.
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