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SIT 630 GAS VAL VE
Note: Before trouble shooting the gas control system, be sure external gas shut off is in the "On" position.
WARNING: BEFORE DOING ANY GAS CONTROL SERVICE WORK, REMOVE GLASS FRONT.
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
I. Spark ignitor will not light
A.
Defective or misaligned
Using a match, light pilot. If pilot lights, tum off pilot and
electrode at pilot.
push the red button again. If pilot will not light - check gap
at electrode and pilot-should be 1/8" to have a strong spark.
B. Defective ignitor (Push Button)
Push Piezo lgnitor Button. Check for spark at electrode anc
pilot. If no spark to pilot, and electrode wire is properly
connected, replace ignitor.
2. Pilot will not stay lit after
A.
Defective pilot generator
Check pilot flame. Must impinge on thermocouple.
carefully following lighting
thermocouple.
Clean and or adjust pilot for maximum flame impingement
instructions.
on thermocouple.
B. Defective automatic valve
Tum valve knob to "Pilot". Maintain flow to pilot; mil-
operator.
livolt meter should read greater than 10 mV. If the reading
is okay and the pilot does not stay on, replace the gas
valve. Note: An interrupter block (not supplied) must be
used to conduct this test.
3.
Pilot burning, no gas to
A.
Sensing bulb not in proper
Make sure sensing bulb is located in bracket on the lower
burner, Valve knob "ON".
location.
right hand side offireplace.
B. Temperature sensing bulb
Carefully examine sensing bulb and capillary tube for
damaged or tubing to bulb
damage. If tubing is kinked, replace gas valve.
kinked
4.
Frequent pilot outage
A.
Pilot flame may be too low
Clean and/or adjust pilot flame for maximum flame
problem.
or blowing (high) causing the
impingement on thermocouple.
pilot safety to drop out.
B. Possible blockage of the vent
Check the vent terminal for blockage (recycling flue gases)
terminal.
I 0001948/1 -Page 22 -
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Table of Contents
Troubleshooting
