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SETTING THE DESIRED HUMIDITY LEVEL

1. 

Plug in dehumidifier and turn on/off switch ON� See 

FIGURE 4

2. 

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�

3. 

The 

 and 

 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� See 

FIGURE 5

• 

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�

4. 

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� See 

FIGURE 6

b. 

If the measured humidity is below the setting, the blowers turn off and the display 
returns to showing the RH setting�

5. 

The dehumidifier will sample again every 60 minutes, or at any time if the humidity setting 
is lowered�

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�

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�

ON/OFF

SWITCH

90-1908

90-1853

90-1853

FIGURE 4 

– ON/OFF SWITCH

FIGURE 5

FIGURE 6

4

Summary of Contents for 1872

Page 1: ...tenance 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 ...

Page 2: ...F 0 RH 99 RH non condensing Filter MERV 8 washable Airflow EXTERNAL STATIC PRESSURE w c AIRFLOW CFM 0 0 310 0 2 270 0 4 225 0 6 175 0 7 w c is maximum design external static pressure REMOVE SHIPPING BRACKET IMPORTANT Cut the strap securing the compressor shipping support bracket and remove the strap shipping bracket screws and bracket See FIGURE 1 CLIP OFF PLASTIC STRAP REMOVE SCREWS 2 DISCARD SHI...

Page 3: ...the slip fit connection A level surface is required to ensure proper drainage from the dehumidifier 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 CONDENSATE PUMP AND FLOAT SWITCH If a condensate pump is needed install it in the condensate pan if installed Install a condensate overflow sa...

Page 4: ... for an extended period when first installed 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 ...

Page 5: ...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 and buttons simultaneously for 3 seconds to clear the service message CHECK THE DRAIN The drain should be checked annually to ensure there are no ...

Page 6: ... The on board control can be located on the top of the dehumidifier or can be relocated to the front of the dehumidifier if the control can not be seen accessed in the top orientation TO MOVE THE CONTROL 1 Remove the front control panel cover 2 Remove the filter access door and filter 3 Detach the on board control by removing the four 4 screws around the control Note Use one hand to support the bo...

Page 7: ...ted to the supply side of the HVAC system Use a minimum of 12 of flex duct at the dehumidifier inlet and outlet to prevent vibration noise transmission When ducting return to return preferred the dehumidifier must be wired to turn on the HVAC fan when operating When ducting return to supply allow adequate space before the first branch duct to ensure the warm dehumidified air is thoroughly mixed wi...

Page 8: ...is not ducted to the HVAC system REQUIRED COMPONENTS 10 Ductwork Grilles with 10 Duct Collars DEHUMIDIFIER DEHUMIDIFIED AIR IS SUPPLIED TO DUCTED SPACE AIR IS PULLED FROM DUCTED SPACE 10 MIN GRILLE WITH 10 DUCT COLLAR 2 PLACES DEHUMIDIFIED SPACE 90 2026 FIGURE 11 STAND ALONE DUCTED 8 ...

Page 9: ...ower 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...

Page 10: ...nstalled on the outlet side of the dehumidifier Check if backflow damper is blocked or stuck and remove obstruction 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 frostin...

Page 11: ...Deh 5449 8 Backflow Damper 10 Deh 5450 9 Inlet Duct Panel AA Deh 5451 10 Cover Outlet AA Deh 5452 No Part Description Part No 11 Fan 130pt Deh with 10MFD Capacitor 5572 12 Wire Harness Power Deh 5454 13 Sensor Low Temperature Deh 5455 14 Sensor High Temperature Deh 5456 15 Capacitor 50MFD 370VAC 5594 16 Capacitor 10MFD 250VAC 5573 17 RH Sensor Deh 5460 18 Drain Tube Fitting 5665 19 Compressor Over...

Page 12: ...ULTING 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 INSTA...

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