Install Instructions

TROUBLESHOOTING
Technical Support is available Monday through Friday, 7:00 a.m. to 5:00 p.m. CST, at [phone]. Use the guides on the following pages to
identify and correct system faults. Contact Technical Support before replacing the unit or any components and for additional troubleshooting.
DIAGNOSTIC CODES
Whenanerroroccurs,theDiagnosticCodealongwithSERVICEREQUIRED
will be displayed on the control screen.
TABLE 1 – Diagnostic Codes
Diagnostic
Code Failure Mode Action Reset
E1 InternalHumidityor
Temperature Sensor
OpenorShorted
1. Check the connection between the sensor board and control board.
2. Ifconnectionokay,replacesensorboard,PartNo.5460.
Cycle Power
E2 High Refrigeration
Pressure
1. Verify that the fan works, and that there is nothing restricting air flow.
2. Ifthefaultpersists,callTechnicalSupport.
Cycle Power
E3 Model 76
Remote Control
Communication Loss
1. Check connections between Model 76 and dehumidifier control board. Terminals should be fully
inserted and secured in the control board and Model 76 control terminals.
2. Ifconnectionsarecorrectandsecure,turnoffthedehumidifierandremovetheModel76.Usea
short section of 4-wire cable to reconnect the Model 76 to the control board. Turn the dehumidifier
backonandincreasethedrynesslevelsettingontheModel76.Ifthedehumidifierturnson,the
problem is with the wiring between the dehumidifier and control.
3. Ifthedehumidifierdoesnotturnon,callTechnicalSupport.
Self-Correcting
E4 InsufficientCapacity 1. Check the frost sensor connection at the power board. Terminal should be fully seated on the
power board pins.
2. Remove the side access panel and verify that the sensor is secured to the suction line.
3. Ifthesensorisconnectedandsecuredtotherefrigerationlineproceedtothenextstep.
4. Reset the fault by cycling power to the dehumidifier.
5. Turn the humidity setting down (below room/home humidity level) to make a dehumidification call.
6. Allow the fan and compressor to run for approximately 10-15 minutes and then enter diagnostic
testmodebysimultaneouslypressingtheUPARROWandMODEbuttonsfor3seconds.TheLCD
willdisplaythetemperaturemeasuredbytheinternalsensorwhilealsodisplayingAIRSAMPLING
andON,thehumiditymeasuredbytheinternalsensorwhilealsodisplaying%RHandON,andthe
frostsensortemperaturewhilealsodisplayingON.Scrollthroughthesevaluesandbyusingthe
UP/DOWNarrowbuttons.
7. Record values and call Technical Support.
Cycle Power
E5 High Temperature
Thermistor Failure
1. Check the high temperature sensor connection at the power board. Terminal should be fully seated
on the power board pins.
2. Remove the side access panel and verify the sensor is not damaged and connected to the
refrigeration line coming from the compressor.
3. Ifthesensorisconnectedandsecuredtotherefrigerationline,itmayneedtobereplacedwith
PartNo.5456–contactTechnicalSupporttoconfirm.
Cycle Power
E6 Low Temperature
Thermistor Failure
1. Check the low temperature sensor connection at the power board.
2. Remove the side access panel and verify the sensor is not damaged and connected to the suction
line.
3. Ifthesensorisconnectedandsecuredtotherefrigerationline,itmayneedtobereplacedwith
PartNo.5455–contactTechnicalSupporttoconfirm.
Cycle Power
90-1854
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