Re-Verber-Ray LD Series Installation Manual page 42

5.0 Maintenance • Troubleshooting Guide
Continued from page 40
After igniter is
No
warmed up, does
gas valve open?
Yes
Does the burner
No
light?
Yes
Does the burner
No
stay on?
Does the burner come
Yes
(1 or 2 seconds)?
Does the heater
stay ON until a call
No
for heat ends?
Yes
Troubleshooting ends.
Check to make sure flame
sensor wire is OK and then
replace the circuit board.
Test for 24V at valve opening period (usually 45 to 60 seconds
after power to heater). Is there 24V to valve for 8 seconds?
No
Replace circuit board and/or wiring harness.
Is the ball valve/
Yes
shut-off valve
in the ON position?
No
Turn on.
Does the burner stay on
for approx. 8 seconds
and then shut off?
No
Yes
on and turn off
immediately
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.
With microampmeter, check DC
Yes
amperage at flame rod. Is
it greater than .07 microamps?
Sensing rod is faulty or flame is weak.
Check to make sure heater is operating
at proper gas pressure as indicated on
heater's rating plate and then,
if needed, replace sensing rod.
Continued from page 40
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
heater's rating plate. Is the gas pressure OK?
No
Correct problem.
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on heater's rat-
ing plate. Is gas pressure OK?
No
Correct problem.
Yes
No
42
LD Series
Yes
Yes
Yes
Yes
Pressure
switch may
be faulty or
there is a
restriction in
the exhaust.
Is the heater properly
grounded? Is the heater's
polarity correct?
No
Correct problem.