Symptom | Possible Cause | Corrective Action | |
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| A. A shorted or loose connection in flame | Verify all connections to wiring diagram in manual. Verify | |
4. Pilot lights but contin- | sensing rod. | connections underneath pilot assembly are tight. Verify con- | |
ues to spark, and main |
| nections are not grounding out to metal chassis, pilot burn- | |
burner will not ignite. |
| er, pilot enclosure or screen if present, or any other metal | |
(If the pilot continues |
| object. | |
to spark after the |
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B. Poor fl ame rectifi cation or contaminated | With fi xed glass assembly in place, verify that fl ame is en- | ||
pilot fl ame has been lit, | |||
fl ame sensing rod. | gulfing fl ame sensing rod on left side of pilot hood. Flame | ||
fl ame rectifi cation has | |||
| sensing rod should glow shortly after ignition. Verify cor- | ||
not occurred.) |
| ||
| rect pilot orifi ce is installed and gas inlet is set to pressure | ||
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| ||
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| specifi cations. Clean fl ame sensing rod with emery cloth to | |
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| remove any contaminants that may have accumulated on | |
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| fl ame sensing rod. | |
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| |
| C. Module is not grounded. | Verify module is securely grounded to metal chassis of ap- | |
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| pliance. Verify that wire harness is fi rmly connected to the | |
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| module. | |
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| D. Damaged pilot assembly or contami- | Verify that ceramic insulator around the fl ame sensing rod | |
| nated fl ame sensing rod. | is not cracked, damaged, or loose. Verify connection from | |
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| fl ame sensing rod to white sensor wire. Clean flame sensing | |
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| rod with emery cloth to remove any contaminants that may | |
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| have accumulated on fl ame sensing rod. Verify continuity | |
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| with a multimeter with ohms set at lowest range. Replace | |
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| pilot if any damage is detected. | |
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| E. Module. | Turn ON/OFF rocker switch or wall switch to OFF position. | |
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| Remove ignitor wire “I” from module. Place ON/OFF rocker | |
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| switch or wall switch in ON position. If there is no spark at “I” | |
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| terminal module must be replaced. If there is a spark at “I” | |
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| terminal, module is fi ne. | |
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Heatilator • NDI30, | 39 |