Troubleshooting - Vermont Castings RFSDV22 Homeowner's Installation And Operating Manual

Troubleshooting the Gas Control System
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
1. Spark ignitor will not light A. Defective or misaligned
2. Pilot will not stay lit after
carefully following lighting
instructions.
3. Pilot burning, no gas to
burner, Valve knob "ON".
4. Frequent pilot outage
problem.
10001028
RFSDV22/32/42 Freestanding Direct Vent Fireplace
SIT 630 Gas Valve
Possible Causes
electrode at pilot.
B. Defective ignitor (Push Button) Push Piezo Ignitor Button. Check for spark at
A. Defective pilot generator
thermocouple.
B. Defective automatic valve
operator.
A. Sensing bulb not in proper
location.
B. Temperature sensing bulb
damaged or tubing to bulb
kinked
A. Pilot flame may be too low
or blowing (high) causing the
pilot safety to drop out.
B. Possible blockage of the vent
terminal.
Corrective Action
Using a match, light pilot. If pilot lights, turn off
pilot and 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.
electrode and pilot. If no spark to pilot, and elec
trode wire is properly connected, replace ignitor.
Check pilot flame. Must impinge on thermocou
ple. Clean and or adjust pilot for maximum flame
impingement on thermocouple.
Turn valve knob to "Pilot". Maintain flow to pilot;
millivolt 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.
Make sure sensing bulb is located in bracket on
the lower right hand side of fireplace.
Carefully examine sensing bulb and capillery tube
for damage. If tubing is kinked, replace gas valve.
Clean and/or adjust pilot flame for maximum flame
impingement on thermocouple.
Check the vent terminal for blockage (recycling flue
gases).
21