Anden A210V1 User manual

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 FEATURES
INLET
FILTER
DRAIN
OUTLET
SAFETY INSTRUCTIONS
WARNING
1. 208-240 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. Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.
3. Dropping may cause personal injury or equipment damage. Handle with care and follow installation instructions.
CAUTION
1. Read all instructions before beginning installation.
2. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible
for their safety. Children should be supervised to ensure that they do not play with the appliance.
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. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
READ AND SAVE THESE INSTRUCTIONS
Model A210V1 Dehumidifier
Installation and Operating Instructions
90-2393
10013307 B2208162E 11.21 English 1

TABLE OF CONTENTS
SAFETY INSTRUCTIONS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1
SPECIFICATIONS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3
UNPACKING THE DEHUMIDIFIER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
LOCATION CONSIDERATIONS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
FLOOR MOUNTING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
SUSPENDING THE DEHUMIDIFIER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �5
Install Brackets for Suspending Unit � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �5
Hanging the Dehumidifier� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �5
Ducting� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �5
DRAIN INSTALLATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
Leveling � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
Condensate Pan, Condensate Pump and Float Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
HARD WIRING – LINE VOLTAGE� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �7
START UP AND SEQUENCE OF OPERATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
Using the Dehumidifier Control � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
Using Model A77 Control � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
SYSTEM SET UP & CHECKOUT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
Installer Test Mode� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
WIRING AND SET-UP� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10
Model A77 Control� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10
Alternative External Control � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 11
DAISY CHAIN WIRING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �12
Model A77 as Driving Control � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
Alternate External Dry Contact Control as Driving Control � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
CODES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �13
TROUBLESHOOTING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �14
Table 1 – Diagnostic Codes � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �14
Table 2 – Troubleshooting Guide � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �15
LIMITED WARRANTY � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �15
SERVICE PARTS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �16
2 English

SPECIFICATIONS
21.73
19.49
27.09
30.53
0.53 DIAMETER
22.73
18.85
90-2394
FIGURE 1 – DIMENSIONS (INCHES)
ENVIRONMENTAL
Operating Temperature Range: 50°F –104°F
Operating Dew Point Lower Limit: 40°F
MECHANICAL
Weight: 118 lbs (without packaging)
Drain Size: 3/4" FNPT
Capacity: 210 PPD @ 80°F, 60% RH
Filter: MERV 11, 17�75" x 13�75" x 1�75"
Airflow: 525 CFM (free flow)
ELECTRICAL
Voltage: 208-240 VAC ~, 1ø, 60 HZ
Operating Current: 8�6A @ 80°F, 60% RH
Efficiency: 3�0 L/kW-hr (6�3 pints/kW-hr)
@ 80°F, 60% RH
DIMENSIONS
English 3

UNPACKING THE DEHUMIDIFIER
Remove the unit from the carton� Cut the retaining band that secures
the compressor to the shipping bracket and remove the band and the
bracket� See FIGURE 2�
INCLUDED IN THE CARTON
• Dehumidifier
• Installation manual
• Hanging brackets
• Model A77 control
• 3/4" MNPT x 3/4" hose barb fitting
• 10 feet of 3/4" clear PVC flexible drain hose
• Terminal screwdriver
• 30 feet of thermostat cable
• MERV 11 filter
CLIP OFF
AND REMOVE
PLASTIC
STRAP
REMOVE SCREWS (2)
DISCARD SHIPPING BRACKET
REINSTALL SCREWS (2)
18" MIN.
18" MIN.
18" MIN.
SERVICE PANEL
INLET SIDE
90-2395
90-2396
FIGURE 2 – REMOVE SHIPPING BRACKET
FIGURE 3 – SPACE CLEARANCES
LOCATION CONSIDERATIONS
This appliance is classified as to not be accessible to the general public�
The dehumidifiers should be spaced evenly throughout the area to be
dehumidified with the following recommendations:
1. Avoid placement where the discharge of one dehumidifier is
pointing toward the inlet of another�
2. Avoid locating the dehumidifier inlet too near a supply register�
Space is not usually available to totally avoid this, but minimizing
the amount of cold air that is discharged to the dehumidifier inlet
will improve moisture removal performance of the dehumidifier�
3. Account for handling dehumidifier condensate by considering drain
or sump pump locations�
4. Leave appropriate room on the drain side of the dehumidifier for
wiring and service�
5. Allow 18" minimum clearance near the inlet and outlet of the
dehumidifier� This will allow easier removal/installation of the filter,
as well as ensure no loss of airflow due to restrictions� Clearance of
18" minimum is also recommend on the service panel side of the
dehumidifier, should any maintenance be needed�
FLOOR MOUNTING
The drain hose must continuously slope downward toward the drain� Use solid supports as needed to elevate the unit enough to allow for continuous
drain slope� Use the adjustable feet to level the unit right to left and front to back so that unit drains properly�
4 English

SUSPENDING THE DEHUMIDIFIER
INSTALL BRACKETS FOR SUSPENDING UNIT
The brackets are designed to accommodate up to 1/2" threaded rod�
1. Insert bracket into slots on the bottom of the base� See FIGURE 4�
2. Rotate the bracket up toward the dehumidifier� With a 5/16" hex socket (not provided), secure the bracket to the side of the dehumidifier using
#10 sheet metal screws (provided)� See FIGURE 5�
3. Repeat for remaining three brackets�
HANGING THE DEHUMIDIFIER
Use the threaded rod to suspend the unit from appropriate ceiling
structure� The unit weight is 118 lbs� Install vibration isolators if located in
an area where noise could be a concern� Level unit right to left and front
to back so that unit drains properly�
DUCTING
Use duct kit part number 5790 for installing ductwork to the
dehumidifier� Reference the instructions provided with duct kit 5790 for
installation details�
INSERT BRACKET INTO
OPENINGS ON BOTTOM
OF UNIT – 4 PLACES
ROTATE BRACKET INTO
PLACE AND SECURE WITH
SCREWS PROVIDED
4X VIBRATION ISOLATOR
(OPTIONAL)
90-2397 90-2398
90-2399
FIGURE 4 – INSTALL MOUNTING BRACKET IN BASE FIGURE 5 – SECURE BRACKET TO DEHUMIDIFIER
FIGURE 6 – SUSPENSION
English 5

DRAIN INSTALLATION
The drain outlet on the dehumidifier can be hard piped using a 3/4" PVC Slip x 3/4" MNPT fitting and 3/4" nominal drain tubing or the provided 3/4"
MNPT x 3/4" hose barb fitting and 3/4" 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� NOTE: PTFE thread seal tape is recommended for the
threaded connection and hand tighten only� If hard pipe is used, PVC primer and cement is recommended for the slip fit connection� Test all joints to
ensure they are leak free before completing the installation�
LEVELING
The feet can be adjusted to level the unit, and if
required, to accommodate drain fittings and a
secondary condensate pan� Leveling is required to
ensure proper drainage from the dehumidifier� See
FIGURE 7�
CONDENSATE PAN, CONDENSATE PUMP AND FLOAT SWITCH
A condensate pan is recommended when suspending
the dehumidifier over finished areas or product� 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 8� Overflow safety
switches on condensate pumps can be wired to the
Float Switch terminals in a similar fashion�
0.38" MIN.
2.00" MAX.
3/4" FNPT DRAIN
FLOAT
Switch
DH DH
NORMALLY CLOSED
FLOAT SWITCH
90-2400
90-1857
FIGURE 7 – LEVEL THE UNIT
FIGURE 8 – FLOAT SWITCH WIRING
6 English

L1
BLK
L2
WHT
GND
GND
L1
BLK
L2
WHT
GND
GND
DISCONNECT
POWER CORD
WIRES
CONNECT THE
LINE (BLK) AND
NEUTRAL (WHT)
WIRES TO THE
POWER BLOCK
AS SHOWN
CONNECT THE BARE OR
GREEN GROUND WIRE
TO THE GROUND LUG
AS SHOWN
90-2401
FIGURE 9 – HARD WIRING TO REPLACE THE POWER CORD
1. Disconnect electrical service at the main fuse or circuit breaker�
2. Run electrical service to where the dehumidifier is to be installed
following all required local and national codes and standards�
3. Remove the side panel from the dehumidifier�
4. Loosen the terminal screws securing the power cord wires to the
terminal blocks and ground lug�
5. Use channellock pliers to remove the strain relief and power cord
from the unit� Pinch the side of the strain relief to release it from the
opening in the sheet metal and pull it away from the dehumidifier�
6. Route the service wires through the opening in the dehumidifier and
secure the cable or conduit to the opening in the dehumidifier using
fittings/clamps intended for the conduit/cable used�
7. Insert the black service wire into the L1 terminal and the white
service wire into the L2 terminal� Secure the wires into the terminals
by tightening the terminal screws�
8. Insert the ground wire (bare or green) of the electrical service into
the ground lug and secure it in place by tightening the ground lug
screw�
9. Reattach the side panel to the dehumidifier�
10. Restore electrical service at the fuse or circuit breaker�
HARD WIRING – LINE VOLTAGE
CAUTION
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.
The dehumidifier comes with a power cord that has a NEMA 6-15P
plug that can simply be plugged into a corresponding NEMA 6-15R
receptacle� The plug can be removed and replaced by hard-wired
electrical service if desired�
United States Installation: Make all electrical connections in accordance
with the current edition of the NEC ANSI/NFPA 70 and any local codes
or ordinances that may apply�
Canada Installation: Make all electrical connections in accordance with
the current edition of the Canadian Electrical Code CSA C22�1 and any
local codes or ordinances that may apply�
Model A210V1
Voltage 208-240 VAC,
single phase, 60 Hz
Recommended Breaker Size 15A
Recommended Wire Gauge 14 AWG, Copper
Maximum Fuse or Breaker Size (MOC) 19A
Minimum Circuit Ampacity (MCA) 11A
English 7

START UP AND SEQUENCE OF OPERATION
USING THE DEHUMIDIFIER CONTROL
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�
The setting will be replaced by the measured humidity and “AIR SAMPLING” will show on the display�
2. Use the UP or DOWN button to adjust the humidity setting as desired�
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 after the number of minutes selected during the Air Sampling portion of the SYSTEM SET UP (see page 9), or
any time the humidity setting is lowered�
USING THE MODEL A77 CONTROL
1. Press the ON/OFF button to turn the dehumidifier control ON� “REMOTE” will show on the display to indicate that an external control is wired to
the dehumidifier�
2. At the Model A77, press the ON button; the Model A77 will display the measured RH�
3. Use the UP or DOWN button on the Model A77 to adjust the humidity setting as desired�
4. If the RH measured by the Model A77 rises above the setting, the dehumidifier will turn on� “DEHUMIDIFYING” will appear on the dehumidifier
control display to show that the Model A77 is calling for dehumidification� The dehumidifier will turn off when the RH measured by the Model A77
drops 3% RH below the setting�
8 English

INSTALLER TEST MODE
If everything is properly wired, the dehumidifier and all of the
wired components will turn on and off during Installer Test
Mode to demonstrate that all are properly operating� Installer
Test Mode lasts for four (4) minutes� If the ON/OFF button is
pressed during test mode, the dehumidifier will exit Installer
Test Mode and return to the OFF screen�
DEHUMIDIFICATION ONLY
90-1854
If the dehumidifier is not
already OFF, press the ON/
OFF button to turn it off�
90-1854
Press and hold the ON/
OFF button and MODE
buttons for 3 seconds� The
measured humidity, AIR
SAMPLING and TEST will
show on the display�
90-1854
After three (3) minutes the
dehumidifier compressor
will turn on and
DEHUMIDIFYING will
replace AIR SAMPLING on
the control screen�
90-1854
After one minute of
compressor operation, all
outputs will turn off and
DONE will blink for 3
seconds and then return to
the OFF screen�
90-1854
SYSTEM SET-UP & CHECKOUT
Skip set up and proceed to INSTALLER TEST MODE on page 9 unless:
• A Model A77 or other external control is to be installed
• changing the air sampling rate
1. Check all wiring�
2. Make sure the wire access cover has been snapped back onto the
on-board control�
3. Plug unit in and turn power switch to ON�
4. The on-board control screen should display OFF�
90-1854
NOTE: If the display backlight is not on, the first button press (any
button) will only turn on the backlight� Press the button a second time
to achieve function�
5. Hold the MODE button on the on-board control for 3 seconds to
enter the Installer Set-up Menu�
6. Navigate through the following screens to set up the dehumidifier
for the installed application�
Use the UP or DOWN arrows to select items and use MODE to
switch to the next set-up option� To exit installer set-up, all options
must be scrolled through using the MODE button�
7. After the installer set up options have been completed, DONE will
blink for 3 seconds and the control will return to the OFF screen�
90-1854
90-1854
AIR SAMPLING
90-1854
Use the UP or DOWN button to
adjust how frequently the
dehumidifier samples the air to
determine whether or not to
dehumidify� Fewer minutes means
the dehumidifier will sample more
frequently to minimize humidity swings, but increases cost to operate
due to more frequent fan operation� Press MODE when done to move to
the next screen�
RH OFFSET
90-1854
An offset can be applied to the
on-board humidity reading to avoid
discrepancies with other humidity
measuring devices in the home� Use
the UP/DOWN arrows to select an
offset from -5% to 5%� Press MODE
to exit the installer set-up screens�
English 9

+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
MODEL A77
CONTROL
DH
DH
R/+
C/-
B
A
90-2490
WIRING AND SET-UP
MODEL A77 CONTROL
The Model A77 will measure the relative humidity and turn the dehumidifier on and off to control the humidity level to the desired setting� The
humidity setting can be adjusted from the control, while the display allows easy access and monitoring of the humidity level in the space� It is
recommended that the Model A77 be mounted at/near canopy height� Shield the Model A77 from direct exposure to HPS or LPS lighting�
NOTE: Use 18-22 AWG wire for control wiring�
Humidity can be controlled using the internal dehumidifier control, a Model A77 control, or a different external control like a thermostat�
Installing an external control eliminates the need to run the dehumidifier blower for sampling, as the control is constantly measuring the humidity
close to the canopy� When the humidity level rises above the setting, the dehumidifier is turned on�
FIGURE 10 – MODEL A77 REMOTE CONTROL WIRING
TO INSTALL AND USE THE MODEL A77 CONTROL,
COMPLETE ALL STEPS:
1. Unplug the dehumidifier or turn off power to the circuit at the
breaker or fuse�
2. Run thermostat cable (use 18-22 AWG wire) from the Model A77 to
the control of the dehumidifier�
3. Trim about 1/4" of insulation from the end of the wires on each
end� Insert the wire into the terminals as shown in FIGURE 10�
4. Restore dehumidifier power�
TO SET THE DEHUMIDIFIER TO USE THE MODEL A77 CONTROL,
COMPLETE ALL STEPS:
1. With power to the dehumidifier, use the ON/OFF button to set the
dehumidifier to the OFF position�
NOTE: If the display backlight is not on, the first button press (any
button) will only turn the backlight on� Press the button a second
time to achieve the desired function�
2. Hold the MODE button on the on-board control for 3 seconds to
enter the Installer Set-up Menu�
3. The display should now read REMOTE on the left and DISABLED
on the right� Use the UP or DOWN arrow buttons to set this to
ENABLED�
90-1854
4. Once the display reads REMOTE ENABLED, press the MODE button
to cycle through the other settings until the display blinks DONE
for 3 seconds�
5. Use the ON/OFF button to turn the dehumidifier ON� The display
on your unit should read REMOTE�
6. Locate the Model A77 that you just set up� On the Model A77, press
the ON button and use the arrow buttons to set your preferred
%RH setpoint� When setting up in REMOTE mode for the first
time, your dehumidifier will wait 3 minutes before starting to
dehumidify, regardless of ambient conditions�
10 English

FLOAT DH DH
SWITCH
EXTERNAL
CONTROL
90-2542
ALTERNATIVE EXTERNAL CONTROL
Alternatively, use any other humidity control system as long as it has a dry contact, normally open output dedicated to controlling the dehumidifier�
Reference the installation literature provided with the alternative control for wiring, set-up, and operating details�
FIGURE 11 – ALTERNATIVE EXTERNAL CONTROL WIRING
TO INSTALL AND USE AN ALTERNATIVE EXTERNAL CONTROL,
COMPLETE ALL STEPS:
1. Unplug the dehumidifier or turn off power to the circuit at the
breaker or fuse�
2. Run thermostat cable (use 18-22 AWG wire) from the alternative
external control to the control of the dehumidifier�
3. Trim about 1/4" of insulation from the end of the wires on each
end� Insert the wire into the terminals as shown in FIGURE 11�
4. Restore dehumidifier power�
TO SET THE DEHUMIDIFIER TO USE THE ALTERNATIVE CONTROL,
COMPLETE ALL STEPS:
1. With power to the dehumidifier, use the ON/OFF button to set the
dehumidifier to the OFF position�
NOTE: If the display backlight is not on, the first button press (any
button) will only turn the backlight on� Press the button a second
time to achieve the desired function�
2. Hold the MODE button on the on-board control for 3 seconds to
enter the Installer Set-up Menu�
3. Press MODE again and the display should change to EXTERNAL in
the center, and DISABLED on the right� Use the UP or DOWN arrow
buttons to set this to ENABLED�
90-1854
4. Once the display reads EXTERNAL ENABLED, press the MODE
button to cycle through the other settings until the display blinks
DONE for 3 seconds�
5. Use the ON/OFF button to turn the dehumidifier ON� The display
on your unit should read EXTERNAL� Even if there is a demand for
dehumidification according to your external control, the dehumidifier
will wait 3 minutes before turning on for the first time only�
English 11

DAISY CHAIN WIRING
Anden dehumidifiers can be wired in a daisy chain application, allowing one Model A77 or alternate dry contact dehumidistat to control any number
of dehumidifiers wired together� Reference the dehumidifier Installation and Operation Manual for detailed set-up and operation�
MODEL A77 AS DRIVING CONTROL
When a Model A77 is used to control the first dehumidifier, Unit #1 must be set to ENABLE REMOTE in the set-up menu� All downstream units must
be set up to ENABLE EXTERNAL in each set-up menu� See page 9 for set up details, and wire as shown in FIGURE 12�
SEQUENCE OF OPERATION
Each unit in the daisy chain responds to the first unit being controlled by the A77� When the humidity level rises above the humidity setting, all units
will dehumidify until the humidity measured by the A77 falls below the setting�
IMPORTANT: If the A77 or first dehumidifier experiences a fault or loses power, all downstream dehumidifiers will also stop function� If any
dehumidifier in the daisy chain other than Unit #1 experiences a fault, that unit will stop operation as determined by the fault but all other units will
continue operating� If any dehumidifier loses power, all downstream units will stop function�
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
DH
DH
R/+
C/-
B
A
Float
Switch
DHDH
Vent
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
Float
Switch
DHDH
Vent
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
Float
Switch
DHDH
Vent
DEH DEH DEH
UNIT #1
SET UP FOR REMOTE CONTROL
MODEL A77 CONTROL
UNIT #2
SET UP FOR EXTERNAL CONTROL
UNIT #3
SET UP FOR EXTERNAL CONTROL
90-2508
FIGURE 12 – WIRING WITH A77 CONTROL
12 English

ALTERNATE EXTERNAL DRY CONTACT CONTROL AS DRIVING CONTROL
When a dry contact control is used to control the first dehumidifier, Unit #1 must be set to ENABLE EXTERNAL in the set-up menu� All downstream
units must be set up to ENABLE EXTERNAL in each set-up menu� See page 9 for set up details and wire as shown in FIGURE 13�
SEQUENCE OF OPERATION
Each unit in the daisy chain responds to the first unit being controlled by the external control� When the humidity level rises above the humidity
setting, all units will dehumidify until the humidity measured by the external control falls below the setting�
IMPORTANT: If the external control experiences a fault, all downstream dehumidifiers will also stop function� If any dehumidifier experiences a fault,
that unit will stop operation as determined by the fault but all other units will continue operating� If any unit loses power, all downstream units will
stop function�
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
Float
Switch
DHDH
Vent
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
Float
Switch
DHDH
Vent
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
Float
Switch
DHDH
Vent
DEH DEH DEH
TO EXTERNAL DRY CONTACT CONTROL
UNIT #1
SET UP FOR EXTERNAL CONTROL
UNIT #2
SET UP FOR EXTERNAL CONTROL
UNIT #3
SET UP FOR EXTERNAL CONTROL
90-2509
FIGURE 13 – WIRING WITH ALTERNATE EXTERNAL CONTROL
CODES (LOCATED ON BACK OF WIRE ACCESS COVER)
See the Installation Instructions for troubleshooting error codes� For additional
assistance, Technical Support is available Monday through Friday, 7:00a�m� to
5:00p�m� CST, at (800)972-3710�
Contact Technical Support before replacing the unit or components and for
additional troubleshooting.
ERROR CODE FAILURE MODE
E1 Internal %RH/Temperature Sensor Failure
E3 Model A77 Remote Control Communication Loss
E4 Insufficient Capacity
E5 High Temperature Thermistor Failure
E6 Low Temperature Thermistor Failure
E7 Float Switch Open
E8 Inlet Air Temperature Out of Range
English 13

TABLE 1 – DIAGNOSTIC CODES
Diagnostic
Code Failure Mode Action Reset
E1 Internal Humidity or
Temperature Sensor
Open or Shorted
1. If connection okay, replace User Interface, Part No� 71000062� Cycle Power
E3 Model A77
Remote Control
Communication Loss
1. Check connections between Model A77 and dehumidifier control board� Terminals should be fully
inserted and secured in the control board and Model A77 control terminals�
2. If connections are correct and secure, turn off the dehumidifier and remove the Model A77� Use a
short section of 4-wire cable to reconnect the Model A77 to the control board� Turn the dehumidifier
back on and increase the dryness level setting on the Model A77� 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� 71000035 – 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� 71000034 – contact Technical Support to confirm�
Self-Correcting
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. Verify all ductwork is properly sealed�
2. If no signs of leak points, contact Technical Support�
Self-Correcting
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� If a 71000087 Alert Light is used, the light will turn on when an error occurs�
90-1854
14 English

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 too high�
• Check dehumidifier air filter and replace if necessary�
• Check for blocked duct work and clear�
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 – defrost� • Lack of or reduced airflow� Check dehumidifier air filter and replace if necessary�
• Check for blocked duct work�
• 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�
• Verify all ductwork is properly sealed�
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, this is
normal�
LIMITED WARRANTY
Your Research Products Corporation Anden™ 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�
WARRANTY REGISTRATION
Visit us online at anden.com to register your Anden product� If you do not have online 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.
English 15

anden.com
P.O. Box 1467
Madison, WI 53701-1467
800.972.3710 F: 608.257.4357
Printed in USA. ©2021 Anden.
SERVICE PARTS
1
2
3
5
4
6
78
10
11
12
9
No. Part Description Part No.
1MERV 11 Replacement Filter 5781
2User Interface 71000062
3Fan with Mounting Bracket 71000067
4Compressor Run Capacitor (40MFD, 370VAC) 71000068
5240:24 VAC Transformer, 40 VA 71000069
6Internal Power PCB 71000026
7Fuse, 1A Slow Blow 71000070
8Compressor Contactor 71000061
9Fan Relay 71000072
10 Low Temperature Sensor 71000034
11 High Temperature Sensor 71000071
No. Part Description Part No.
12 Leveling Foot 71000036
Not Shown
Digital Dehumidifier Control A77
Drain Tubing, 3/4" ID x 10' L 71000063
Duct Kit 5790
Hanging Bracket Kit 71000075
Parts Bag
• Screwdriver
• T20 Drive Bit
• 3/4 MNPT x 3/4 Hose Barb Drain Fitting
• Model A77 Control
• 30 ft� 20 AWG, 3-wire Thermostat Cable
71000076
Alert Light 71000087
90-2402
16 English