50
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Troubleshooting
Table 50-1:
Diagnostic Codes (continued)
Diagnostic
Code Failure Mode Action Reset
E5 High Temperature
Thermistor Failure
• Check the high temperature sensor connection at the power board. Terminal should be
fully seated on the power board pins.
• Remove the side access panel and verify the sensor is not damaged and connected to the
refrigeration line coming from the compressor.
• If the sensor is connected and secured to the refrigeration line, it may need to be
replaced. Contact Technical Support to confirm.
Cycle Power
E6 Low Temperature
Thermistor Failure
• Check the low temperature sensor connection at the power board.
• Remove the side access panel and verify the sensor is not damaged and connected to the
suction line.
• Terminal should be fully seated on the power board pins.
• If the sensor is connected and secured to the refrigeration line, it may need to be
replaced. Contact Technical Support to confirm.
Self-
Correcting
E7 Float Switch Open • Empty the condensate pan.
• Check the float switch connection at the control board.
• If not using a float switch, verify jumper is between float switch terminals on dehumidifier
control board.
• If the problem persists, replace the float switch.
Self-
Correcting
E8 Inlet Air
Temperature Out
of 50°F – 104°F
(10°C - 40°C)
Range or Dew
Point Below 36°F
(2.2°C) for RL-31
and below 40°F
(4.4°C) for all
other models.
• Verify all ductwork is properly sealed.
• If no signs of leak points, contact Technical Support.
Self-
Correcting
E9 Fan or Compressor
Fault
• Cycle power. If problem persists, contact Technical Support. Cycle Power
TROUBLESHOOTING
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