TROUBLE SHOOTING THE GAS CONTROL SYSTEM
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 |
|
|
|
|
|
| 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. |
|
|
|
|
- 13 -
