Aprilaire 1710A - Maintenance; Air Filter; Drain

6 7
Red LED Codes (continued)
Number
of Blinks Fault Type
Failure
Mode Failure Condition Action
6 Critical Frostsensor
failure.
Frosttemperaturesensor
open or shorted.
1. Check the frost sensor connection at
the control board.
2. Remove the side panel (when facing
side of unit, on/off switch will be on
left) and verify the temperature sensor
is not damaged, is fully inserted in the
sensor well, and the well is filled with
thermal paste.
3. If the fault persists, contact Technical
Support.
7 Non-Critical Floatswitch
open.
Open circuit between
float switch inputs.
1.Emptythecondensatepan.
2. Check the float switch connection at
the control board.
3.Ifnotusingfloatswitch,verifyjumper
is between float switch terminals on
dehumidifier control board.
4. If the problem persists, replace the
float switch.
Acriticalfaultcanbeclearedbyrepairingthefaultandcyclingpowertothedehumidifier.Anon-critical
fault can be cleared only by repairing the fault.
Test Mode
Attheendoftestmode(3minutesofDEHFan+1minuteofCompressorON&DEHFan),theRedandGreen
LEDswillturnONandOFFalternatelyuntiltheknobhasbeenturnedawayfrom“TEST”.
Red LED Codes
Number
of Blinks Fault Type
Failure
Mode Failure Condition Action
1 Non-Critical Internal
RH sensor
fault.
RH sensor open or
shorted.
1. Check connection between sensor
board and control board.
2. If connection okay, replace sensor
board,PartNo.4752.
2 Critical Internal
temperature
sensor fault.
Temperature sensor open
or shorted.
1. Check connection between sensor
board and control board.
2. If connection okay, replace sensor
board,PartNo.4752.
3 Non-Critical Model76
Remote
Control
fault.
Model76Remote
Control not
communicating with
dehumidifier.
1.CheckconnectionsbetweenModel76
and dehumidifier control board.
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.
4 Critical Insufficient
capacity.
After20minutesof
compressor operation, the
frost sensor temperature
isnotatleast5°Fbelow
the inlet air temperature.
1. Check the frost sensor connection at
the control board.
2. Remove the side panel (when facing
side of unit, on/off switch will be on
left) and verify the temperature sensor
is not damaged, is fully inserted in the
sensor well, and the well is filled with
thermal paste.
3. If the sensor is not damaged and
positioned correctly, contact Technical
Support.
5 Non-Critical Inlet air
temperature
out of
range.
Internal temperature
sensor reads out of
50°F –105°Frangefor
compressor operation.
NOTE:Ifcompressoris
on when fault condition
occurs, the compressor
will turn off. If the
compressor is not on
when the fault condition
occurs, there is no fault.
1. Circulate air through the unit by setting
the Cycle Period to 1 hour and Cycle
Timeto60minutes.Afteraminimum
of 10 minutes, cycle power to the
dehumidifier.
2.Iffaultpersists,callTechnicalSupport.
AIR FILTER
Undernormalcircumstances,thefilterinthedehumidifiershouldbecleanedorreplacedonceayear.
Acleanfilterisnecessarytopreventdamagetothedehumidifierandallowittofunctionatfullcapacity.
To remove the filter, first unplug or disconnect power to the dehumidifier, then remove the air filter
via the access panel on the side of the dehumidifier. To clean, flush with warm water and detergent
solution.Afteracleanornewfilterisreinstalled,replacetheaccesspanelandreconnectpowerto
thedehumidifier.ThereplacementfilterforthedehumidifierisModel4510andisavailablefrommost
HVACcontractorsinyourareaorAprilaire.com
DRAIN
The drain trap or outlet should be checked and cleaned of debris annually.
NOTE: The drain trap needs to be primed with water prior to start-up and after extended periods of unit
shutdown(wintermonths).SeeFigure 2.
MAINTENANCE