Vermont Castings RFS42 Operations Instructions download pdf (Page 13)

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SIT 630 GAS VALVE

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

1. Spark ignitor will not light A. Defective or misaligned Using a match, light pilot. If pilot lights, turn 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 Ignitor Button. Check for spark at electrode and

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 1. 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 Turn valve knob to "Pilot". Maintain flow to pilot; millivolt

operator. 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 of fireplace.

B. Temperature sensing bulb Carefully examine sensing bulb and capillery 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.

terminal.

C. Loose connections to/from the Check wires on the vent safety switch at the draft hood relief

vent safety switch opening and at the junction block where the thermocouple

meets the gas valve.

TROUBLE SHOOTING THE GAS CONTROL SYSTEM

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Vermont Castings RFS42 Operations Instructions Page 13