Re-Verber-Ray MP3 Series Insert Manual page 17

MP3 Series
Purge gas lines.
No
Were the
gas lines purged of air?
Is the heater properly grounded?
Is the heater's polarity correct?
Are "L1" and "N" reversed?
No
Correct grounding
and/or polarity.
Replace ignition
module.
Replace igniter.
Yes
Adjust pressures within
required limits. If inlet was
over 14" W.C., release
pressure at inlet to heater
Yes
With a micro ammeter, check the
μA on the FS terminals on the
ignition module. Is it greater than
0.7 μA?
No
Is the insulation of the
flame rod damaged
or is the rod dirty or
oxidized?
Yes
Temporarily disconnect igniter from
harness and check the resistance. Is
it within the range of 50-400
No
The fan is faulty or there
is a restriction in the
intake or exhaust.
Are the
manifold and
Yes
inlet pressures
within required
limits?
No
to unlock valve.
Yes
Yes
No
17
4.0 Troubleshooting Guide
Continued from Page 15
No
Yes
Ω
?
Are the pressure
No
switch readings
within specs?
Yes
Replace
pressure switch.
Is the gas
Remove
Yes
orifice
obstruction.
obstructed?
No
Replace gas
valve.
Replace ignition module.
Replace flame rod or
clean if able.
Faulty wire to flame rod
or faulty ignition module.