HearthStone Quality Home Heating Products Inc | TUCSON | ||
TROUBLESHOOTING |
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Symptom | Possible Cause | Corrective Action |
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1. Pilot will not | A. Insufficient gas pressure, | A. Using the piezo sparker, try to light the |
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light. | air in the pilot line, or dirty or | pilot. If it will not light, check the inlet gas |
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| kinked gas line. | pressure. |
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| B. Pilot orifice plugged. | B. Clean or replace the pilot assembly. |
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| C. Defective or misaligned | C. If a match lights a pilot, check the |
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| electrode at pilot. | electrode gap and location. Should be a 1/8" |
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| D. Defective ignitor. | gap in the flame area. |
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| D. Check for a good connection between |
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| E. After sitting for "off" | ignitor and electrode. Check wire insulation. |
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| season (summer), pilot | If properly connected and no spark, replace |
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| assembly may be dirty. | ignitor. |
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| E. Clean or replace the pilot assembly. |
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2. Pilot will not stay | A. Low or too high gas | A. Check for proper inlet pressure for the gas |
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lit after carefully | pressure | being used. |
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following lighting |
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instructions. | B. Faulty connections. | B. Measure voltage between valve body and |
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| solder connection on the rear of the valve |
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| C. Defective thermocouple. | (where the blue wire connects). It should be |
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| D. Pilot dirty or plugged. | no less than 7 mV. |
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| C1. Ensure that the thermocouple connection |
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| at the gas valve is tight. |
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| C2. Check thermocouple output using milli- |
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| volt meter. Disconnect from valve and read |
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| voltage across wire ends. If the reading is |
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| less than 15 mV, replace the pilot assembly. |
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| C3. If burning NG, check pilot flame to see |
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| that it is impinging on the top of the |
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| thermocouple. Clean or replace pilot for |
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| maximum flame impingement. |
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| D. Clean or replace the pilot assembly. |
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