Superior DIRECT-VENT GAS FIREPLACES SDV35 - Manual (Page 23)

23
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
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.
A. Defective igniter
(no spark at electrode).
Check for spark at electrode and pilot; if no spark
and electrode wire is properly connected, replace
igniter.
B. Defective or misaligned electrode at pilot
(spark at electrode).
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 does not measures 1/8",
replace pilot (see Figure 10 or 11 on Page 15).
C. Gas supply pressure errant. Check inlet gas pressure. It should be within the limits
as marked on the rating plate.
D. Pilot orifice plugged. Clean or replace pilot orifice.
2. Pilot will not stay lit after
carefully following the lighting
instructions.
A. Defective pilot generator
(thermocouple).
Check pilot flame, it must impinge on thermocouple
(see Figure 10 or 11 on Page 15). Clean and/or adjust
pilot for maximum flame impingement on thermo-
couple. Ensure that the connection between the valve
and thermocouple are tight and secure.
3. Pilot burning, no gas to burner, Valve
knob “ON,” and the (optional) burner
ON/OFF switch is “ON." Read impor-
tant note below.
IMPORTANT NOTE: If an optional
*remote switch is used for burner
operation, the unit-mounted burner
OFF/ON switch (if installed) must be
in the "OFF" position.
*Optional remote switch kits - wall
switch, wall thermostat or remote
control.
A. Wall switch or wires defective. Check wall switch and wires for proper connections.
Jumper wire across 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.
B. Thermopile may not be generating suf-
ficient millivolts.
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.
C. Plugged burner orifice. Check burner orifice for blockage and remove.
D. ON/OFF Switch & *Remote Switch are in
the "ON" position resulting in excessive
resistance.
When turning on the burner using a *remote switch,
ensure that the optional ON/OFF 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.
4. Frequent pilot/burner outage prob-
lem.
A. Pilot flame may be too low or blowing
(high) causing the pilot/valve safety to drop
out.
Clean and/or adjust pilot flame for maximum flame
impingement on thermocouple (Figure 10 or 11 on
Page 15).
* Optional remote switch kits - wall switch, wall thermostat or remote control.
TROUBLESHOOTING THE MILLIVOLT CONTROL SYSTEM
Note: Before troubleshooting the gas control system, Ensure external gas shut off valve, located at gas supply inlet, (and
wall switch, iff applicable), is in the “ON” position.
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.