NVB Series
Troubleshooting
Nova SIT 820 Standing Pilot
START
CHECK
Gas Supply On
YES
Pilot Lights with
Piezo Ignitor
YES
Pilot Stays Lit
YES
Pilot Lights Main
Burner
YES
NO |
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| • Supply Line Hooked up | ||
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| • Shutoff Valve Open |
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| • Lockout has engaged. Wait 60 |
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| seconds and try again. |
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| • Piezo not tight enough for good |
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| ground. |
NO |
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| • For spark at electrode while |
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| depressing Piezo (Red Button) |
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| 1/8" gap to pilot hood needed. |
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| • All wiring connections |
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| • Replace Piezo Ignitor |
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| • Thermodisk |
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| • For Air in the lines |
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| • Thermopile needs a minimum |
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| 325mV. Adjust pilot flame height. |
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| • All wiring connections |
NO |
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| • Replace Thermopile | |
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| • Thermocouple needs a minimum |
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| of 14mV. |
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| • Defective valve. Turn to pilot, |
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| meter should read greater than |
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| 100mV. |
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| • Thermodisk |
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| • Wall switch is not turned on. |
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| Watch for grounded wires! |
NO |
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| • Thermopile needs a minimum | ||
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| 325mV |
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| • Plugged burner orifice |
System OK
FP396
7412950 | 17 |
