Troubleshooting Guide - Millivolt - Superior SLBV 35 Care And Operation Instructions Manual

SUPERIOR
TROUBLESHOOTING GUIDE: MILLIVOLT GAS CONTROL SYSTEM
NOTE: Before troubleshooting the gas control system, Ensure external gas shut off valve, located at gas supply inlet, (and wall switch,
if applicable), is in the "ON" position.
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.
SYMPTOM
1. Spark igniter will not light pilot
after repeated triggering of igniter
button.
WARNING: if the pilot will not light
after 1 minute of attempting, wait
for at least 5 minutes for gas to
clear before attempting again.
2. Pilot will not stay lit after carefully
following the lighting instructions.
3. Pilot burning, no gas to burner,
Valve knob "ON," and the (standard)
burner OFF/ON switch is "ON."
IMPORTANT NOTE: If an optional
*remote switch is used for burner
operation, if the standard burner
OFF/ON switch is still installed on
appliance it must be in the "OFF"
position.
*Optional remote switch kits -
wall switch, timer, or remote
control.
4. Frequent pilot/burner outage
problem.
* Optional remote switch kits - wall switch or remote control.
B-VENT GAS FIREPLACES • MODELS SLBV-35, SLBV-40 • CARE AND OPERATION INSTRUCTIONS
®
POSSIBLE CAUSES
A. Defective igniter
(no spark at electrode).
B. Defective or misaligned
electrode at pilot (spark at
electrode).
C. Gas supply pressure errant. Check inlet gas pressure. It should be within the limits as marked on the
D. Pilot orifice plugged.
A. Defective pilot generator
(thermocouple).
A. Wall switch or wires defective. Check wall switch and wires for proper connections. Jumper wire across
B. Thermopile may not be
g e n e r a t i n g s u f f i c i e n t
millivolts.
C. Plugged burner orifice.
D. OFF/ON Switch and
*Remote Switch are in the
"ON" position resulting in
excessive resistance.
A. Pilot flame may be too low
or blowing (high) causing the
pilot/valve safety to drop out.
CORRECTIVE ACTION
Check for spark at electrode and pilot; if no spark and electrode wire is
properly connected, replace igniter.
Using a match, light pilot. If pilot lights, turn off pilot and trigger the igniter
button again. If pilot lights, an improper gas mixture caused the bad lighting
and a longer purge period is recommended. If pilot will not light - check
gap at electrode and pilot - should be 1/8" to have a strong spark. If gap
measures 1/8", replace pilot (see Figure 14 on Page 16).
rating plate.
Clean or replace pilot orifice.
Check pilot flame, it must impinge on thermocouple (see Figure 14 on
Page 16). Clean and/or adjust pilot for maximum flame impingement
on thermocouple. Ensure that the connection between the valve and
thermocouple are tight and secure.
terminals at wall switch, if burner comes on, replace defective wall switch.
If okay, jumper wires across wall switch wires at valve, if burner comes on,
wires are faulty or connections are bad.
Check thermopile with millivolt meter. Take reading at thermopile terminals
of gas valve. Should read 325 millivolts minimum with optional wall switch
"OFF." Replace faulty thermopile if reading is below specified minimum.
Check burner orifice for blockage and remove.
When turning on the burner using a *remote switch, ensure that the
standard OFF/ON switch is in the "OFF" position. If both switches are in the
ON position, it may result in excessive resistance (and millivolt drainage)
and the burner may not come on.
Clean and/or adjust pilot flame for maximum flame impingement on
thermocouple (see Figure 14 on Page 16).
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