54
CL3
Series
5.0
Maintenance
•
Troubleshooting Guide
Does the heater
stay ON until a
call for heat ends?
After igniter is
warmed up, does
gas valve open?
Does The
burner light?
Does the burner
stay on?
Troubleshooting ends.
Test for 24 V at valve opening period (usually 45 to 60 seconds
after power to heater). Is there 24 V to valve for 8 seconds?
Replace circuit board.
Is the ball valve/
shut-off valve
in the ON position?
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
the heater’s rating plate. Is gas pressure OK?
Does the burner stay on for approximately
8 seconds and then shut off?
Does the burner come
on and turn off
immediately
(1 or 2 seconds)?
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on the heater’s
rating plate. Is gas pressure OK?
Pressure switch
may be faulty
or there is a
restriction in the
exhaust.
The heater can shut down due to:
• Improper grounding.
• High winds.
• Taking combustion air from the attic.
• Dirty environment.
• Improperly positioned baffles.
• Fluctuating gas pressure.
No
Yes
No
No
Yes
Yes
No
Correct problem.
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Turn on.
Continued from page 52
Yes
Correct problem.
No
