TROUBLESHOOTING (continued)
TABLE 4 – Diagnostic Codes (continued)
Diagnostic
Code
Failure Mode
Action
Reset
E7 | Float Switch Open | 1. | Empty the condensate pan.. |
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| 2. | Check the float switch connection at the control board.. |
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| 3. | If not using a float switch, verify jumper is between float switch terminals on dehumidifier |
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| control board.. |
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| 4. | If the problem persists, replace the float switch.. |
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E8 | Inlet Air Temperature | 1. | Verify all ductwork is properly sealed.. |
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| Out of 50°F – 104°F | 2. | If no signs of leak points, contact Technical Support.. |
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| or dew point below |
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| 40°F |
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E9 | Outdoor Temperature | 1. | Check the sensor connection at the power board.. |
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Outdoor | Resistance |
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| Sensor Open or | 2. Remove the wires from the terminals and measure | Temperature |
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| Shorted |
| the resistance.. A short circuit will have a resistance |
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| 0°F | 84,500 Ohms |
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| very close to 0 Ohms and an open circuit will have |
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| 20°F | 46,000 Ohms |
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| a very very high resistance.. The table at right can |
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| 40°F | 26,000 Ohms |
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| be used to approximate the resistance based on |
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| outdoor temperature.. | 60°F | 15,500 Ohms |
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| 3. | If the sensor is not reading correctly, replace the | 80°F | 9,500 Ohms |
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| sensor, Part No.. 8052.. |
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| 100°F | 6,000 Ohms |
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25
