Troubleshooting Guide - Electronic; Reset Limit Switch - Superior VRE4336ZEN Installation And Operation Instructions Manual

TROUBLESHOOTING THE ELECTRONIC IGNITION SYSTEM
NOTE: Before troubleshooting, be sure that the appliance main line gas shut-off valve, the gas control valve and the wall
switch are in the "ON" position.
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.
SYMPTOM
1. Nothing happens when ON/OFF switch is
turned on (pilot does not spark).
2. The main burner does not light and the
igniter is sparking.
3. The main burner come "ON" but then go
"OFF".
4. Log soot.
5. The main burner shuts off but the pilot
remains lit.

RESET LIMIT SWITCH

Step 1. Remove bottom middle refractory
panel (#4) and valve cover assembly (#9) to
gain access to the limit switch (#25).
Limit Switch Detail
Figure 28
22
POSSIBLE CAUSES
A. Dead batteries.
B. Low voltage/or bad lead wires.
C. Damaged igniter wire.
D. Damaged pilot assembly.
A. No fuel supply.
B. Loose sensor wire.
C. Lose wires to valve.
D. Loose wires to ignition module.
E. Air in the gas line.
F. Low voltage.
A. Gas supply is turned "OFF".
B. Loose wire connection on valve or ignition
module.
C. Flame does not engulf flame sensor.
A. Flame impingement on the log.
B. Improper air shutter opening.
A. Lose wire to valve or limit switch has
activated.
Step 2. Slide your left hand into the fireplace
and use your middle finger to feel for two
wires connected to the limit switch. Follow up,
in between the two wires is the reset button,
located on the back of the limit switch. Refer
to Figures 28 and 29 for more detail.
Slide Left Hand
Limit Switch Location
Underneath
Limit Switch
Figure 29
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
CORRECTIVE ACTION
Replace batteries (Refer to Page 10).
Check voltage on the batteries. The value should
be around 2.7 to 3.2 VAC. Confirm that wire
connections are secure.
Check for visible cracked casing, cuts, etc.
Check pilot assembly for visibly broken spark
electrode, etc.
Ensure that the gas supply is turned on.
Ensure sensor wire connection is secure.
Ensure black, green and orange wires connection
is secure to valve.
Ensure black sensor wire (S) and black igniter
wire (I) is secure to ignition module.
Purge gas line of air.
Test voltage at the batteries. It should be around
2.7 to 3.2 VAC.
Turned gas supply to "ON".
Check wire connection.
Check location of sensor.
Check for proper log placement.
Check for proper air shutter openings.
Allow the unit to cool to below 220° F and then
reset the limit switch. Refer to Reset Limit Switch
on this page. Check the burner pan for the proper
application of volcanic stone.
NOTE: Make sure you have new batteries
and all volcanic stone has filled the pan and
that the logs are set correctly.
Use Middle Finger To Press
Limit
Reset Button On Underside
Switch
Of Limit Switch