Aprilaire 1870F User manual

Model 1870F Dehumidifier
Installation and Operating Manual
READ AND SAVE THESE INSTRUCTIONS
CAUTION
1. Read all instructions before beginning installation.
2. Improper installation may cause property damage or injury. Read instructions before installation, service or maintenance.
3. Do not use in pool applications. Pool chemicals can damage the dehumidifier.
4. Do not use solvents or cleaners on or near the circuit board. Chemicals can damage circuit board components.
5. Wait 24 hours before running the unit if it was not shipped or stored in the upright position
6. Do not use dehumidification to prevent window condensation in the winter. To address window condensation, use ventilation
to lower indoor humidity in the winter.
WARNING
1. 120 Volts may cause serious injury from electric shock. Disconnect electrical power before starting installation or servicing.
Leave power disconnected until installation/service is completed.
2. Dropping may cause personal injury or equipment damage. Handle with care and follow installation instructions.
SAFETY INSTRUCTIONS
Dehumidifer
Control
ON/OFF button
used to turn
dehumidifier on
and off
Up/Down
buttons used to
change humidity
setting
MODE button
used for optional
ventilation feature
Inlet Filter Access
Door
Drain Power
Switch
Outlet
1
For product support, contact Aprilaire at 1-800-334-6011.
For sales inquiries, contact Sylvane at 800-934-9194, or visit Sylvane.com.
For product support, contact Aprilaire at 1-800-334-6011.
For sales inquiries, contact Sylvane at 800-934-9194, or visit Sylvane.com.

SPECIFICATIONS
Model 1870F
Weight 114 lbs.
Capacity
AHAM DH-1-2008 80°F, 60% RH Conditions 130 pints per day @ 310 CFM
Power
115 VAC, Single Phase, 60Hz 8.3A operating current
Dehumidifier Inlet Air Conditions Dehumidification: 50°F – 104°F, 40°F dew point minimum
Ventilation: 40°F – 140°F, 0%RH – 99%RH (non-condensing)
Filter MERV 8, washable
Airflow 310 CFM
TABLE OF CONTENTS
Safety Instructions......................................................................................................1
Specifications..........................................................................................................2
Set Up Dehumidifier for Installation ......................................................................................3
Location Considerations.................................................................................................3
Drain Installation .......................................................................................................4
Leveling ..............................................................................................................4
Condensate Pan, Condensate Pump and Float Switch .........................................................................4
Setting the Desired Humidity Level .......................................................................................5
Maintenance...........................................................................................................6
Model 76 – External Control or Crawl Space/Sealed Attic Control and Wiring................................................7
Troubleshooting ........................................................................................................8
Table 1 – Diagnostic Codes ..............................................................................................8
Table 2 – Troubleshooting Guide ..........................................................................................9
Service Parts..........................................................................................................10
Warranty .............................................................................................................11
2

LOCATION CONSIDERATIONS
TOP VIEW
FILTER
MINIMUM
CLEARANCE FOR FILTER
(EITHER SIDE)
20"
6" MINIMUM CLEARANCE
FOR PROPER AIR FLOW
ELECTRICAL SERVICE
ACCESS THIS SIDE
6 FT. POWER CORD
FIGURE 2 – Filter Access Clearance
90-2042
•Allowsufficientclearanceforfilterremovaland
to prevent airflow obstruction
•Electricalserviceaccesswillrequiretheremoval
of the side panel shown. Allow sufficient space
for service on this side of the unit.
•Iflocatingtheunitinanatticorcrawlspace,a
Model 76 Control mounted in the living space
isrecommended.RefertoModel76Installation
InstructionsandOwner’sManual.
•Alwaysinstallthedehumidifierinacondensate
pan when locating in or over a finished space.
CUT OFF
PLASTIC STRAP
REMOVE SHIPPING BRACKET
FIGURE 1 – Remove Shipping Bracket
90-2040
IMPORTANT: Cut the strap securing the compressor
shipping support bracket and remove the strap, shipping bracket
screws, and bracket. See Figure 1.
SET UP DEHUMIDIFIER FOR INSTALLATION
3

FLOAT
Switch
DH DH
NORMALLY CLOSED
FLOAT SWITCH
DRAIN INSTALLATION
LEVELING
CONDENSATE PAN, CONDENSATE PUMP AND FLOAT SWITCH
Alevelsurfaceisrequiredtoensureproperdrainagefromthedehumidifier.
The drain outlet on the dehumidifier can be hard piped using 3/4” nominal drain tubing or the provided fittings and 1/2” clear PVC tubing can be
used to drain the dehumidifier. Always maintain a constant downward slope from the dehumidifier to the drain and do not allow soft tubing to
curl up which may result in air lock.
Always install the dehumidifier in a condensate pan when locating
in or above a finished space. Adhere to local codes regarding
drainingofthecondensatepan.Ifacondensatepumpisneeded,
install it in the condensate pan as well.
Installacondensateoverflowsafetyswitch(i.e.floatswitch)inthe
condensate pan, remove the factory installed jumper wire between
the Float Switch terminals on the control and wire the float switch
to the dehumidifier as shown in Figure 4.Overflowsafetyswitches
on condensate pumps can be wired to the Float Switch terminals in
a similar fashion.
FIGURE 4 – Float Switch Wiring
90-1857
4

SETTING THE DESIRED HUMIDITY LEVEL
1.PresstheON/OFFbuttontoturnthedehumidifiercontrolON.Thedisplaywillshow
the current setting, and the dehumidifier blower will turn on to start sampling the air.
2.TheUPandDOWNarrowbuttonsallowthehumidityleveltobesetfrom40%to80%
relativehumidity.UsetheON/OFFbuttontoturnthedehumidifierONorOFF.
Set the control at 55%RH when first
installed. Allow the dehumidifier to
run until it reaches the setting before
deciding if you want to change the
setting.
 • Ifyouprefertheairtobemoredry,
decrease the humidity setting.
 • Ifyouprefertheairtobelessdry,
increase the humidity setting.
 Yourcomfortisthebestmeasureofhowtoadjustyoursetting.Whenfirstinstalled,
your dehumidifier has to remove all the moisture that is initially in your home. The
home acts like a sponge so the moisture in the materials of your home is at the same
level as the air. After drying the air, the materials of the home will release moisture
back into the air until they are again at the same level. As a result, it is not uncommon
for the dehumidifier to operate for an extended period when first installed.
3. After three (3) minutes of sampling, the measured humidity will be compared to the setting:
 a.Ifthehumidityisabovethesetting,thedehumidifiercompressorturnsonand“AIRSAMPLING”willbereplacedby“DEHUMIDIFYING”.
The compressor remains on until the measured humidity falls 3% RH below the setting.
 b.Ifthemeasuredhumidityisbelowthesetting,theblowersturnoffandthedisplayreturnstoshowingtheRHsetting.
4. The dehumidifier will sample again every 60 minutes, or at any time if the humidity setting is lowered.
Yourdehumidifierisequippedwithtwofeaturesthatprotectagainstunwantedenergyconsumption.Defrostisanormaloperatingmodethat
helpstopreventsignificanticeformationontherefrigerationsystemcoil.Thedehumidifierdisplaywillshow“DEFROSTING”whenoperating
in this mode. This mode can occur when there is not enough air moving through the dehumidifier or if the temperature and/or humidity of
the incoming air is too low. The second protection feature is the E8 code. E8 on the dehumidifier display indicates that the air entering the
dehumidifier is below 50°F or above 104°F, or the dew point of the incoming air is below 40°F. There would be a significant reduction in
dehumidifier efficiency if the dehumidifier operated outside of these conditions. Low dew point conditions can be seen in some basements
orcrawlspacesandusuallyoccurintheWinterandSpringmonths.Thedehumidifiercontinuestomonitortheincomingairandwhenthe
conditions are within the operating range, E8 will be removed from the display and dehumidification will begin as needed.
ENERGY SAVINGS TIPS
Energy Savings Tip #1: Adjust the humidity
setting to be as high as is comfortable to
reducedehumidifierruntime.Ifitfeels
clammyor“smellsmusty”,lowerthehumidity
setting. To save energy, turn the dehumidifier
toOFFwhenyouopenyourwindows,justas
you would with air conditioning.
Energy Savings Tip #2:Ifvacatingyourhome
for an extended period in the summer, set the
RH at 55% and set your thermostat as high as
you are comfortable setting it to in the cooling
mode. Consult with appropriate professionals
regarding the highest temperature that is safe
for your pets or possessions. This will keep the
humidity at a controlled level while minimizing
the amount of cooling energy used.
90-1853
5

MAINTENANCE
CLEAN OR REPLACE THE AIR FILTER
After initial installation the air filter should be checked and cleaned every 6 months.
TheCLEANFILTERservicereminderwilldisplayontheon-boardcontrolscreenevery6months.
Tocleartheservicemessage,presstheUPandDOWNarrowssimultaneouslyfor3seconds.
Filter Cleaning Procedure
1.TurntheON/OFFswitchOFF.
2. Remove the filter access door from either side of the dehumidifier.
3. Slide the filter out of the dehumidifier.
4. Flush the filter with warm water and a mild detergent solution.
5. Shake off the excess water from the filter.
6. Replace the filter, making sure the filter is secured in both the top and bottom filter rails.
7. Replace the filter access door.
8.TurntheON/OFFswitchON.
9.PresstheUPandDOWNbuttonssimultaneouslyfor3secondstocleartheservicemessage.
CAUTION
Do not use spray solvents or cleaners on or near the inlet side of the dehumidifier.
If desired, apply cleaner to a cloth and use to clean the cabinet.
CHECK THE DRAIN
Thedrainshouldbecheckedannuallytoensuretherearenoblockagesorairlockinthedrainsystem.Iftheunitisnotdrainingproperly,haveit
checkedbyaqualifiedserviceprofessional.
90-1854
6

MODEL 76 – EXTERNAL CONTROL OR CRAWL SPACE/SEALED ATTIC
CONTROL AND WIRING
Whenthedehumidifierislocatedinacrawlspace,sealedattic,orotherhardtoaccess
area, a Model 76 can be installed in the living space and will operate as a remote control.
RefertotheModel76InstallationInstructionsandOwner’sManualforinstallationand
operating instructions.
NOTE:Use18-22AWGwireforcontrolwiring.
Model 76 Control
7

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
8

TABLE 2 – Troubleshooting Guide
Symptom Possible Reason Troubleshooting Procedure
Dehumidifier does not
turn on/run.
Nopowertounit. • Checkthatthedehumidifierispluggedin.
• CheckthatthepowerswitchisturnedON.
• CheckthatthecontrolisturnedON.
• Checkthatthecircuitbreakerhasnottripped.
Dehumidifier blower is
running but with little or
no airflow.
Pressure drop across dehumidifier
is higher than 0.6”w.c.
• Checkdehumidifierairfilterandwashorreplace.
Dehumidifier blower is
running but compressor
is not.
Float switch open. • Iffloatswitchinstalled,checkconnectionsatcontrolboardandemptycondensatepan.
• Ifnofloatswitchinstalledcheckthatthejumperisinstalledatthefloatswitchterminals
on the control board.
Coil frosting. • Lackoforreducedairflow.Checkdehumidifierairfilterandwashorreplace.
• Checkthatthereisnothingblockingtheinletoroutletofthedehumidifier.
• Inletairconditionsbelow60°F.Increasethehumiditysetting.
Inletairtemperatureisoutsideof
the 50°F – 104°F range or the dew
point is below 40°F and there is a
demand for dehumidification.
• Noaction.Thecompressorwillnotrunifinletconditionsareoutofrange.
Dehumidifier is not
draining properly.
Drain line blocked or unit not level. • Verifythattheunitislevel.
• Checkthedrainlineblockagesandforacontinuousdownwardslope.
Dehumidifier is
producing hot air.
Normalfunction. • Airisreheatedacrossthecondensercoil,resultinginatemperaturerisebetweeninlet
and outlet.
TROUBLESHOOTING (CONTINUED)
TABLE 1 – Diagnostic Codes (continued)
Diagnostic
Code Failure Mode Action Reset
E7 FloatSwitchOpen 1. Empty the condensate pan.
2. Check the float switch connection at the control board.
3. Ifnotusingafloatswitch,verifyjumperisbetweenfloatswitchterminalsondehumidifier
control board.
4. Iftheproblempersists,replacethefloatswitch.
Self-Correcting
E8 InletAirTemperature
Outof50°F–104°F
range, or dew point
below 40°F
1. Iftemperatureisoutofrange,noaction,normaloperation.
2. Ifairtemperatureisbetween50°F –104°Fwithadewpointabove40°F,contactTechnical
Support.
Self-Correcting
9

SERVICE PARTS
No. Part Description Part No.
1Filter, 12” x 12” x 1” EZK 5569
2InternalControlBoard,Deh 5444
3UserInterfaceAssembly,Deh 5445
4WiringAccessDoor,AADeh 5446
5Door, Filter Access, AA Deh 5571
6Fan, 130pt Deh, with 8MFD Capacitor 5588
7WireHarness,Power,Deh 5454
No. Part Description Part No.
8Sensor, Low Temperature, Deh 5455
9Sensor, High Temperature, Deh 5456
10 Capacitor, 50MFD, 370VAC, (compressor) 5594
11 Capacitor, 8MFD, 450VAC, Deh, (fan) 5459
12 RH Sensor, Deh 5460
13 Drain Tube + Fittings 5585
14 CompressorOverloadSwitch 5574
1
412
3
14
13
7
9
8
2
10
11
6
5
90-2041
10

LIMITED WARRANTY
WARRANTY REGISTRATION
Your Research Products Corporation Aprilaire®Dehumidifier is expressly warranted for five (5) years from date of installation to be free from defects in materials
or workmanship.
ResearchProductsCorporation’sexclusiveobligationunderthiswarrantyshallbetosupply,withoutcharge,areplacementforanycomponentwhichisfoundto
be defective within such five (5) year period and which is returned not later than thirty (30) days after said five (5) year period by you to either your original supplier
ortoResearchProductsCorporation,Madison,Wisconsin53701,togetherwiththemodelnumberandinstallationdateofthedehumidifier.
THISWARRANTYSHALLNOTOBLIGATERESEARCHPRODUCTSCORPORATIONFORANYLABORCOSTSANDSHALLNOTAPPLYTODEFECTSINWORKMANSHIP
ORMATERIALSFURNISHEDBYYOURINSTALLERASCONTRASTEDTODEFECTSINTHEDEHUMIDIFIERITSELF.
IMPLIEDWARRANTIESOFMERCHANTABILITYOR FITNESSFOR APARTICULARPURPOSESHALLBELIMITEDINDURATIONTOTHEAFORESAIDFIVEYEAR
PERIOD. RESEARCH PRODUCTS CORPORATION’S LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, OTHER THAN DAMAGES FOR PERSONAL
INJURIES, RESULTING FROM ANY BREACH OF THE AFORESAID IMPLIED WARRANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED.
THISLIMITEDWARRANTYISVOIDIFDEFECT(S)RESULTFROMFAILURETOHAVETHISUNITINSTALLEDBYAQUALIFIEDHEATINGANDAIRCONDITIONING
CONTRACTOR.IFTHELIMITEDWARRANTYISVOIDDUETOFAILURETOUSEAQUALIFIEDCONTRACTOR,ALLDISCLAIMERSOFIMPLIEDWARRANTIESSHALL
BEEFFECTIVEUPONINSTALLATION.
Somestatesdonotallowlimitationsonhowlonganimpliedwarrantylastsortheexclusionorlimitationofincidentalorconsequentialdamagessotheabove
exclusion or limitations may not apply to you.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
Visit us on-line at www.aprilaire.comtoregisteryourAprilaireproduct.Ifyoudonothaveon-lineaccess,pleasemailapostcardwithyour
name, address, phone number, email address, product purchased, model number, date of purchase and dealer name and address to:
Research Products Corporation, P.O. Box 1467, Madison, WI 53701
Your Warranty Registration information will not be sold or shared outside of this company.
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P.O.Box1467•Madison,WI53701-1467•Phone:800/334-6011 •Fax:608/257-4357•www.aprilairepartners.com
10011031 5.15
B2206518A
Printed in U.S.A.
© 2015 Aprilaire – A division of Research Products Corporation
For product support, contact Aprilaire at 1-800-334-6011.
For sales inquiries, contact Sylvane at 800-934-9194, or visit Sylvane.com.
For product support, contact Aprilaire at 1-800-334-6011.
For sales inquiries, contact Sylvane at 800-934-9194, or visit Sylvane.com.