EF3003, SF3003, DF3003
TROUBLESHOOTING GUIDE
HEATER (CONTINUED)
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| Service Manual |
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| Reference |
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| Loose wiring |
| Trace wiring in unit |
| Page 9 |
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| Heater fan runs |
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| Defective heater on/off switch |
| Replace heater on/off switch |
| Page 17 |
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| continuously |
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| Defective heater assembly |
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| Replace heater assembly |
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| Page 18 |
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NOISE
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| Service Manual |
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| Reference |
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| Excessive noise |
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| Dirty blower assembly |
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| Clean blower assembly |
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| with the heater on |
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| Defective blower assembly |
| Replace heater assembly |
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| Page 18 |
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| Grinding or |
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| Moving flame rod hitting or |
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| excessive noise |
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| rubbing against internal |
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| Flame rod replacement |
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| Page 15 |
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| with the heater off |
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| components |
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| Defective flame motor |
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| Replace flame motor |
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| Page 15 |
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