Dri-Eaz LGR 3500i, F410, F411 Owner's Manual

Owner’s Manual

WARNING

LGR 2800i Portable Dehumidifier (F410)
LGR 3500i Portable Dehumidifier (F411)

Featuring integrated sensors and remote monitoring capability

DRI-EAZ PRODUCTS, INC.

15180 Josh Wilson Road, Burlington, WA 98233

Phone: [phone] Fax: [phone] www.dri-eaz.com

The Dri-Eaz® LGR i-Series dehumidifiers reduce humidity in enclosed structural
environments by removing water vapor from the air. The i-Series product line is engineered
to be rugged, durable and highly portable, making them ideally suited for water damage
restoration, structural drying, construction, and other applications requiring temporary,
high-performance dehumidification.

Product may be covered by: U.S. Patent Pending 12/272,455; 12/558,389; 12/767,526

READ AND SAVE THESE INSTRUCTIONS

SAFETY INSTRUCTIONS

WARNING! Electric shock hazard, rotating fan, hot
surface hazards. Unplug unit before opening cover
for cleaning or servicing. Unit must be grounded.

• Inspect the power cord before use. If cord is
damaged, do not use. Always grasp the plug (not
the cord) to unplug.

• Insert three-prong plug on power cor d i nto a
matching electrically grounded outlet. Do not use
adapter. Never cut off third prong. Do not use an
extension cord.

• The unit must be operated on a 115V/60 Hz ci r cuit
protected by a Ground Fault Circuit Interrupter
(GFCI) device.

• Keep motor and wiring dry.

• Do not attempt to repair the unit. F or A uthorized

Service Centers, call Dri–Eaz at 800-932-3030.

BEFORE YOU BEGIN

Unpacking your unit

Retain all packing material and boxes for possible
equipment returns. Find and retain the AA batteries,
which must be installed before using the unit.

Installing the sensor batteries

Two AA batteries are shipped with the 2800i and 3500i
to provide power to the built-in HygroTrac® wireless
transmitter when the unit is not connected to AC power.
The battery compartment is located directly under the
power cord socket on the back of the unit (see Figure C).
Use a flat-blade screwdriver to turn the battery
compartment cover 90° counter-clockwise and remove
the cover. Insert the batteries with the negative terminal
in first. After inserting the batteries, se cure the cover by
pressing it in with the screwdriver and turning it 90°
clockwise.

Warranty registration

Visit warranty.drieaz.com to register your purchase.
Registration allows us to better assist you with using,
maintaining or servicing your equipment, as well as to
contact you in case we have important safety i nformation
concerning your Dri-Eaz product. If you determi ne
service is required, have your equipment model , serial
number and original proof of purchase available and call
your distributor for assistance with obtaini ng a ret urn
material authorization (RMA).

IMPORTANT

To help prevent drip tray overflow after using the dehumidifier, always purge the unit before moving.

1. Turn the unit off and allow the plugged in dehumidifier to rest for 10 minutes.

2. Press the
unit in place until the purge cycle is complete. The m anual purge cycle lasts approximately 10 second s.

3. Return the unit to the upright position and press PURGE one more time to empty the pump.
Remove the dehumidifier promptly from the job site o nce these steps have been completed.

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PURGE key and while the purge pump is operat i ng, tip the unit back approximately 45° and hold the

CONTENTS GUIDE

Positioning a dehumidifier .............................. 2

Parts identification ........................................... 3

Operating your dehumidifier .......................... 3

Maintenance ..................................................... 5

Transport and storage ..................................... 7

Cleaning ............................................................ 8

System status and data messages ................ 9

Error messages ................................................ 9

Troubleshooting ............................................. 10

See “HygroTrac Remote Sensing” on p. 2 for an
overview of how to use the unit with the HygroTra c
Remote Monitoring System (purchased separately).

INTRODUCTION

Dri-Eaz dehumidifiers reduce humidity in enclo sed
structural environments by removing water vapor from
the air. With proper use, your dehumidifier can help dry
carpet, carpet pad, floors, walls, building cont ents and
more. Using Dri-Eaz dehumidifiers can also help prevent
secondary damage caused by high humidity. For best
results, use your dehumidifiers with Dri-Eaz TurboDry er
airmovers placed around the perimeter of the room to
distribute heat energy and release moisture from wet
surfaces into the air.

How LGR dehumidifiers work

Dri-Eaz low-grain refrigerant dehumidifiers operate by
pulling moist air in across a very cold evaporator c ore.
The moisture in the air condenses on the coil. I n certain
conditions, the machine operates in defrost mode,
warming any frost that has accumulated on the
evaporator coil back into water. The water coll ects in a
tray and is pumped out through a hose. Onboard
sensors continually monitor environmental conditions
and system operations of the dehumidifier, including
temperature and relative humidity, which can b e viewed
on the display panel. The unit also transmits data to a
HygroTrac gateway, which can store the inform ation or
relay it to the HygroTrac website (see below).

LGR (Low Grain Refrigerant) dehumidifiers h ave better
heat exchange and defrost abilities than regular
refrigerant dehumidifiers, and are able to continue
removing moisture in drier environments .

HygroTrac remote sensing

The LGR “i-Series” dehumidifiers are equipped with
HygroTrac wireless sensor technology. When used with
the HygroTrac Remote Monitoring system, this
technology allows the user to monitor site conditions and
equipment performance in real time via the intern et.

Here’s how it works. The dehumidifier transmits humidity
and temperature values to a gateway placed at the
jobsite. The gateway can be configured to store this data
for later retrieval, or to transmit the data via an Internet

connection to a secure website. Users may log on to the
HygroTrac website from any computer with internet
access and view, print and download a wide variety of
customizable reports, charts and graphs.

Used in conjunction with additional sensors placed in the
drying environment, the HygroTrac system provides an
extremely accurate view of the drying environm ent,
equipment performance and drying progress. The
system can also be set to alert you via email or text
message on your cell phone if inlet or outlet conditi ons of
the dehumidifier exceed certain parameters y ou have set
on the HygroTrac website.

If the HygroTrac system reports a Power Off st atus for a
unit on a job site, you will know immediately that the unit
has been turned off or that the power has otherwise
been interrupted. HygroTrac can be configured to
automatically notify you by e-mail or text message if this
occurs.

Asset tracking

When the unit is disconnected from AC power, the
system will automatically go into in a “Standby” m ode,
periodically transmitting a Standby signal. T wo
replaceable AA batteries provide the power for this mode
of operation (see “Installing the Sensor Bat teries,” p. 1).

The Standby signal can be used to confirm the location
and status of your unit. A HygroTrac gateway place d i n
your storage area, for example, will receive S tandby
transmission from any 2800i and 3500i units in the
vicinity and report this status to your HygroTrac website.

Data transmitted

The information collected by the system includes the
temperature and relative humidity of the inlet and outlet.
The HygroTrac system uses this data to cal culate grain
depression (the amount of moisture bein g removed from
the air) and other important information about the unit’s
operating status. The system also transmit s all top level
status messages. For more information, see “System
status and data messages,” p. 9.

For more information about HygroTrac Remot e
Monitoring, please visit hygrotrac.drieaz.com or call Dri­Eaz at 800-932-3030.

POSITIONING A DEHUMIDIFIER

For best results, operate your dehumidifiers in a n
enclosed area, as this creates a drying chambe r. Close
all doors and windows that open to the outside to
maximize the unit’s water removal efficiency . Also, keep
traffic though the drying chamber to a minimum. Place
your dehumidifier against a wall, away from obstructions,
and keep it away from anything that could block airflow
into and out of the unit. For more information about
creating an optimum drying environment, cont act Dri­Eaz at 800-932-3030.

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FIG. C: POWER AND PUMP
ATTACHMENT POINTS

Control panel.

Power cord socket.

AA battery compartment. Provides

FIG. B: REAR

Integrated handle.

Lower back panel. Remove the

FIG. D: PUMP ACCESS PANEL

PARTS IDENTIFICATION

FIG. A: FRONT

Molded pocket
for cord storage.

Humid air inlet
(both sides).

Rugged rotomolded
housing resists dents
and scratches and is
easy to maintain.

Process (dehumidified)
air outlet. May be used
with standard 12" rigid
or layflat ducting.

Drain hose pocket.

Lower back panel. Remove
this panel to access the
pump for servicing.

power to HygroTrac wireless
transmitter when unit is not plugged in.

Bottom of back
polyethylene housing.
Remove two bolts to
remove pump for cleaning.

five retaining screws to remove
pump for cleaning.

OPERATING YOUR DEHUMIDIFIER
Set unit upright

NOTICE: If you transport an i-Series dehumidifier in a
horizontal position, set it upright and let it st and f or at
least 30 minutes before you turn it on. When the
machine is horizontal, the oil from the compresso r flows
into the refrigerant coils reducing the ability of the
dehumidifier to function. Letting the unit st and upright for

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30 minutes allows the oil to flow back into the
compressor.

Set up drain hose

The i-Series condensate pump connects to a plastic
drainage hose that is located in the pocket on the back
of the unit. This hose is equipped with a quick-connect
fitting for quick attachment to the provided 40-ft. drain
hose. Unwrap the entire hose and place the unattached
end in a sink, drain, bucket or outside – anywhere that
water can drain out safely. If you use a bucket or other

ON/OFF

DISPLAY

receptacle for water collection, check it regularly to
prevent spills.

NOTE: Uncoil and straighten the entire drain h ose.
Do not leave any of part of the hose coiled on the
unit and do not place the end of the hose higher
than 20 ft. (6 m) above the top of the unit. Also
check for kinks, or obstructions that would restrict
the flow of water. Failure to do so may cause a water
backup in the pump resulting in leakage.

Plug in electrical cord

The i-Series dehumidifier should be plugged into a
GFCI-protected 115 volt outlet rated for at least 15
Remove the cord from its storage pocket and uncoil it.
Always plug the cord firmly into the unit first, and then
plug the other end into a suitable outlet.

amps.

Turn the unit on

The control panel on the i-Series dehumidifier has a
display and a touchpad with four keys. Press the

ON/OFF to turn the unit on.

CONTROL PANEL

DISPLAY
MENU

PURGE PUMP

MENU
SELECTION /
UP KEY

How to use the control panel

The control panel on the LGR 2800i has a display and a
touchpad with four keys.

ON/OFF. Press the ON/OFF key to turn the unit on or

off. When the machine turns on, the display normally
reads PLEASE WAIT COMP. DELAY and performs a
numeral count down from a maximum of 60 seconds
to 0. This delay allows time for refrigerant pressures to
equalize for easier starting. If you don’t see a
compressor delay countdown, a delay is not necessary
and the machine will begin operation immediately. Once
the unit completes the compressor delay, the display
shows UNIT ON XX HRS and cycles between
INLET XX°F and INLET XX%.

DISPLAY MENU. Press the DISPLAY MENU key to

cycle through the display of additional dehumidifie r
conditions and User Settings. To return to the main
menu, press the ON/OFF button once.

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MENU SELECTION. Press the MENU SELECTION

key to change the values on the "User Defined" set tings.
The MENU SELECTON key acts as the UP key for
adjusting the setpoint for Humidistat mode operation.
See User Settings Menu (below) for details.

PURGE. Press the PURGE key to manually empty

water from the condensate pump reservoir. NOTICE:
Always press the purge key prior to moving the uni t.
During normal operation, the pump purges autom atically
every six minutes, or whenever the reservoir is full. The
display will read PUMP PURGING with a nume ral
countdown.

Main menu display

When unit is first plugged in to AC power, the control
panel display will briefly cycle through a serie s of
displays. This is part of the unit’s self-diagnosis
procedure and no user intervention is required.

Once the self-diagnosis is complete, the display will
show the following information:

UNIT ON 00 HRS

INLET 00°F / INLET 00%

The first line of the display shows the total number of
hours the unit has been in operation. This value may be
reset to zero to track job hours (see “Job Hours Reset”
below). The second line of the display alternates
between inlet temperature and inlet humidity.

The i-Series wireless transmitter continuously seeks a
connection with a HygroTrac gateway. When a
connection is established, a wireless symbol
in the lower right corner of the display.

No information is presented on the display when the unit
is not plugged in. However, the wireless transmitter will
continue to communicate with a HygroTrac gateway. AA
batteries supply power for the transmitt er to send a basic
“Standby” message to the gateway. This signal may be
used to track the location of i-Series units in storage.
See “Asset Tracking,” p. 2.

User settings menu

A number of settings may be changed by the user.
System information is also available. These items are
accessed by pressing the
press of the key will display the next parameter (see li st
below). When you reach the parameter you wish to
adjust, press the
the value. Press
setting and re-start the display cycle. If no keys are
selected for 20 seconds the display will automatically
reset and return to the normal display mode.

Note that only menu items followed by a greater-than
symbol ( > ) may be adjusted.

MENU SELECTON key to increase

DISPLAY MENU again to accept the

DISPLAY MENU key. Each

appears

JOB HOURS

RESET? >

Press to reset hours to zero. NOTE: When in
Humidistat mode, the unit will display HUMI DI STAT on
the top line during normal operation rather than JOB
HOURS.

LIFE HOURS

00 HRS

Shows total unit operating hours. Value cannot be
modified.

INLET OUTLET
00° 00% 00° 00%

Shows current temperature and RH of inlet and outlet.
The HygroTrac system uses these values to calculate
grain depression.

HUMIDISTAT MODE

ON/OFF >

In ON mode, unit will maintain the humidistat setpoint
(see below). Press
NOTE: When in Humidistat mode, the unit will di splay
HUMIDISTAT on the top line during normal operation
rather than JOB HOURS.

HUMIDISTAT

SETPOINT 00% >

Sets humidity level when unit is in Humidistat Mode (see
above). Press
Settings cycle upward through 90%RH and start again at
30%RH.

TEMP UNITS

Shows current temperature scale. Press to select
Fahrenheit or Centigrade scale.

LANGUAGE

ENGLISH >

Shows current display panel language. Press to
select Spanish, German, French or English.

COIL TEMP

Displays the cold (evaporator) coil temperature.

to toggle between ON and OFF.

to change RH value at 5% increments.

F° >

00°F

SENSOR ID >

00000000

Shows built-in wireless transmitter number. The
HygroTrac system uses this to uniquely identify your i­Series unit. NOTE: For convenience, this same number
is shown on the barcode label affixed to the cont rol
panel.

Press
TYPE, SENSOR REVISION, and SENSOR CONF REV.
A Dri-Eaz service technician may ask you for these
values when diagnosing a problem.

Shows compressor current draw in amps.

Error messages

If the i-Series onboard diagnostics discover a problem,
the unit will display an error message. If t he uni t is used
with the HygroTrac system, it will also transmit most
error messages to the user’s HygroTrac website. See
“System Status and Data Messages” and “Error
Messages,” p. 9, for a summary of messages.

At the end of the job

As with all dehumidifiers, once the drying job i s
completed, it is important to make sure the unit i s
completely purged of water before moving it. To ensure

that all water has drained into the pump, follow
these steps:

1. Turn the unit off and allow the plugged in dehumidifier
to rest for 10 minutes.

2. Press the PURGE key and while the purge pump is
operating, tip the unit back approximately 45° and hold
the unit in place. The manual purge cycle lasts
approximately 10 seconds.

3. Return the unit to the upright position and press

PURGE one more time to empty the pump.
Remove the dehumidifier promptly from the job site
once these steps have been completed.

Before transporting, be sure to remove the external drain
hose, drain it carefully, and return it to the pocket
provided on the back of the unit.

to cycle through the following values: SENSOR

COMPRSSR CURRENT

0.0 A

MAINTENANCE

WARNING! ELECTRIC SHOCK HAZARD. Unplug the

dehumidifier before performing any mai ntenance.

Before each use

Inspect the electrical cord for damage. Look for

fraying, cuts, etc. Do not use the unit if you f ind any
damage. Call Dri-Eaz for the nearest Service Center at
800-932-3030.

Inspect and vacuum filter as needed. The i-Series
dehumidifiers are equipped with a 3M™ High Air-Flow

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filter. The HAF filter may be vacuumed clean and reused

FIG. E: ELECTRIC BOX
ATTACHMENT SCREWS

detach the electric junction box.

up to three times. Do not rinse or wash the HAF filter,
as it will reduce the effectiveness of the elect rostatic
material.

Keep a clean filter in the unit at all times to protect
internal components from dust and other parti culate
build-up. Vacuum or replace filter before each job.
Replace only with a new 3M HAF Filter (Dri-Eaz part no.
F421). For parts and service call your local distrib utor or
contact the Dri-Eaz Service Department at
800-932-3030 or 360-757-7776.

CAUTION: Dust can cause the unit to ov erheat and
shut down. Do not operate when excessive dust or
airborne particles are present, such as during
sanding or spray-painting. Inspect and clean air fi l ter
elements and coils frequently.

IMPORTANT: Replace the HAF fi lter whe nev er 1)

it has been vacuumed clean 3 times or 2) it has
been used on a mold remediation job or
otherwise exposed to potentially dangerous
contaminants.

Monthly

Check coils. Dirty coils can cause the unit to overheat.

Clean when visibly dirty. See “Instructions for Cleani ng,”
p. 8.

Check heat exchange block. Clean out with
compressed air only. Take care not to damage the block.

Inspect and clean the pump. To remove the
condensate pump unit:

SERVICING THE PUMP AND DRAIN PAN

To maintain proper operation, the pump and drain pan
assembly should be periodically removed and cleaned.
Follow these steps to clean the pump and drain pan
assembly:

Tools Needed

Philips screwdriver
Flat blade screwdriver

⅜ in. and

15

∕

in. sockets and driver

16

Cleaning cloths

DISASSEMBLY AND CLEANING

1. Unplug unit, then remove the power cord from the
socket at the base of the unit. Remove pump hose at
quick-connect.

2. Remove HAF filter.

3. Remove the two bolts from the upper front cover.

4. Remove one bolt each from the upper back corner of
side covers A and B (see Fig. A)

5. Remove four bolts from the lower back panel. The
back/top panel may now be removed.

6. Remove lower back metal panel (unscrew the five
attachment screws).

7. Place a firm support under the base of the unit so that
the left wheel may be removed.

8. Using the flat blade screwdriver, carefully pry the
center hub cap loose from the left wheel. Use the

15

∕

in.

16

socket to remove the retaining nut and slide the wheel
off. See Fig E, #1.

9. Remove the two electric box retaining screws (see Fig
E, #2.).

10. Tilt the bottom of the electric box to the right and
slide outward (Fig F). It is not necessary to di sconnect
any electrical cables.

11. Remove drain hose from pump assembly and slide

1. After placing a firm support under the base of the unit, remove
the center hub cap and remove the axle nut. The wheel will now
slide off. 2. Remove the two screws (shown in the circles above) to

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FIG. F: ELECTRIC BOX LOCATION

After removing attachment screws (Fig. E), tilt the bottom of the
electrical box to the right and slide it out. Set aside. It is not necessary
to disconnect any electrical cable s.

pump and tray assembly out of the unit.

12. Lift pump body out of plastic catch tray.

13. Wipe or rinse off all surfaces of the plastic cat ch tray
with a damp cloth.

CLEANING THE PUMP AND PUMP TRAY

14. Remove the pump assembly from the pum p tray and
set pump aside. Wipe or rinse out pump tray and wipe
dry.

15. Remove pumpout hose from the check valve out let.

16. Unscrew check valve. Using needle nose pliers
carefully remove bottom of check valve assembly by
inserting one side of pliers approximately ⅛ in. into hole,
grasp and pull out carefully. A small ball bearing should
fall out so be careful not to lose it. Inspect asse m bl y for
debris in assembly and clean accordingly. Reinstall t he
ball bearing and reinstall the check valve assembly.

Reassemble in reverse order. The dehumidifier i s now
ready for use.

Annually

Have the pump system inspected by the Dri-Eaz Service
Department (800-932-3030) or by a qualified service
center.

TRANSPORTATION AND STORAGE

NOTICE: Handle the unit carefully. Do not drop, throw,
or place the unit where it could fall. Rough treatment
can damage this equipment and may create a
hazardous condition or void warranty.

IMPORTANT: Be sure to purge the water from the
pump reservoir before moving the unit. See the
PURGE function under "How to use the contr ol panel"
on p. 4. Note that the unit must be plugged in for the
Purge function to operate.

1. Do not expose the control panel to moisture, snow or
rain when transporting in uncovered vehicles such as
flatbed trucks.

2. Store and transport securely to avoid any damaging
impact to internal parts.

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CLEANING

Side cover A

HAF filter

FIG. G: CLEANING

Condenser coil

Evaporator (cold) coil

Air-to-air heat

for installation.

COILS AND HEAT
EXCHANGE
BLOCK

Warning! Unplug

unit before servicing.

To help keep the unit
operating efficiently,

exchange block.
Arrows printed on
the block indicate
correct orientation

keep the coils and the
air-to-air heat exchange
block clean. These
components are easily
accessed by removing
the side and rear covers
of the unit as described
below:

1. Unplug unit.

2. Unplug the power
cord from the socket at
the base of the unit.
Remove pump hose at
quick-connect.

3. Remove HAF filter.

4. Remove both side
covers A and B
(unscrew two bolts
shown for each panel).

5. Remove back cover
(unscrew the four bolts
shown on the back
and the two bolts on
the upper front panel).

6. Remove the heat
exchange block.

Inspect the heat exchange block carefully. If necessary,
use compressed air to clear the channels of t he bl ock,
taking care not to damage the block.

NOTICE: The unit is fitted with sensitive electronic
sensors. Protect the sensors from impact and do not
expose them to water or cleaning solution.

Vacuum or use compressed air on both sides of the
upright (condenser) coil until it is clean. Take care not to
let the nozzle touch the fins; as this may damage the
fins.
NOTICE: Dri-Eaz Coil Cleaner (Dri-Eaz part no. S402)
may be used on the horizontal cold (evaporator) coil
only. Follow instructions on product label. Take care not

Side cover B

Pump hose – thread up
through hole in bottom of
rear hose pocket before
reinstalling cover.

to spray or wipe Coil Cleaner on or near any electrical
components or sensors. To clean the vertical
(condenser) coil, contact Service for inst ruct ions.

To reassemble, follow the above steps in reverse. Be
sure to reinstall heat exchange block in the origi nal
orientation. When installing the rear cover, carefully
thread the pump hose through the hole in the back
pocket before putting the cover in place.

NOTICE: Rubber strips are attached to the outside
edges of the evaporator and condenser coils to
provide an airtight seal around the heat exchange
block. When reinstalling the block, make sure the
seals are in place and are not kinked or folded.

Rear cover

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Unit experienced a power failure but has

message.

action required.

SYSTEM STATUS AND DATA MESSAGES

The table below is a summary of status and data messages prod uced by the i-Series dehumidifers. The left column sho ws
the messages that appear on the control panel display. The center column shows the message s t hat are relayed to the
HygroTrac remote monitoring system and di splayed on the HygroTrac website. The HygroTrac website will also display
one of three status messages for each i-Serie s uni t detected by a HygroTrac gateway: S for standby (the unit is
disconnected from AC power but the wirel ess transmitter is working properly), A for active (t he unit is sending normal data
and status messages), or I for inactive (the uni t is sending no messages).

CONTROL PANEL

MESSAGE

UNIT ON 00 HRS Dehumidifier On Normal operation.

HYGROTRAC

WEBSITE MESSAGE

EXPLANATION

UNIT ON 00 HRS
DEFROST CYCLE

OFF

UNIT ON 00 HRS
POWER FAILURE>

HUMIDISTAT
INLET XXX°F

SYSTEM STATUS

HI TEMP CYCLE
REMAINING 00 MIN

In Defrost Mode

Dehumidifier Off AC power
present.

Dehumidifier Restarted after
Power Failure

Humidistat Controlled

In High Temp mode

[display is blank] Stand-by Mode

Normal operation. Unit is in defrost mode. No
action required.

Unit is turned off. AC power present.

successfully restarted. Press > to clear this

Humidistat mode is active and dehumidifier
energized.

LGR 2800i only. Indicates normal operation. Unit
has detected higher ambient temperatures and
switched modes to operate more efficiently. No

No AC power. Wireless transmitter functioning
normally. No action required.

ERROR MESSAGES

The table below shows error messages that the sy st em may display. If the display shows an “ER” message, first unpl ug
the unit and then plug it back in. This may re-set the electronics, and if so, no further action is required. If the error
message reappears, try the solution shown under “Explanation.” If this still does not fix the problem, contact your local
authorized service center or the Dri-Eaz Service Department at 800-932-3030.

CONTROL PANEL

MESSAGE

HYGROTRAC

WEBSITE MESSAGE

EXPLANATION

ER1 CONTACT SERVICE
CENTER

ER2 CONTACT SERVICE
CENTER

SYSTEM ERROR

ER3 CONTACT SERVICE
CENTER

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Failure: Contact Service
Center

Failure: Contact Service
Center

Failure: Contact Service
Center

Check AC power for inadequate voltage. The
electronic control panel may require replacement.
Contact service.

The electronic control panel may require
replacement. Contact service.

Check defrost sensor for proper connection.
Check sensor cable for damage. Sensor assem­bly may need replacement. Contact service.

ER4 √ DEFROST SENSOR

unit

CONNECT
– or –
ER4 √ OUTLET SENSOR
CONNECT

ER5 √ SENSOR
CONNECTION ON BD

ER6 CONTACT
SERVICE CENTER

ER7 INVALID
MODEL SETTING

ER8 BUTTON STUCK √
ALL BUTTONS

ER9 PUMP BLOCKED √
CHECK PUMP & HOSE

Check Sensor Connections

Check Temp/RH Sensor
Connections

Failure: Contact Service
Center

Failure: Contact Service
Center

Dehumidifier Off. Button
Stuck on Controller

Dehumidifier Off: Check
Hose and Pump

Check defrost sensor for proper connection.
Check sensor cable for damage. Sensor assem­bly may need replacement. Contact service.

Check temp/RH sensor connections.

The high voltage board may need replacing.
Contact service.

Incorrect DIP switch settings or firmware versi o n
for that specific model. Contact service.

Press each membrane button and check for
proper operation. Membrane overlay may require
replacement. Contact service.

Check for obstructions in drain hose. Check the
pump.

TROUBLESHOOTING

FAULT CAUSE SOLUTION

Water drips out
when moving

Unit does not
operate

Blower wheel
not turning

Unit operating,
but room not dry

Unit collects too
little water

If the problem you are experiencing is not list ed here, call your local distributor or contact
our Service Department toll-free at 800-932-3030 for further assistance.

Unit was unplugged before
purging was complete.

No power to machine.
Unit not switched on.

Obstructed blower.

Not enough time to dry.
Poor air movement in room.
Excessive moist air infiltration.

Room air is dry.
Room temperature is too low.

Purge unit before moving. See “At the End of the Job,” p. 5.

Plug in unit; check power at outlet and at base of unit . Switch
unit on.

Remove duct ring and grill.
Remove obstruction.
Replace duct ring and grill.

Allow more time for drying.
Increase air movement with air movers.
Reduce infiltration.

Check humidity with hygrometer.
Increase room temperature.
Check filter and coils; clean as necessary.

07-01674F 2011-04 Warranty 07-00420 10 Dri-Eaz Products, Inc.

Dimensions
(H × D × W)

48.5 × 23 × 24 in.
123 × 58 × 61 cm

48.5 × 23 × 24 in.
123 × 58 × 61 cm

8 amps,
115 volts

10.5 amps,
115 volts

Water removal
(80°F/60% RH)

Water removal
RH)

Water removal
80°F/20% RH

20 pts. | 9.5 liters /
day

22 pts. | 10.4 liters /
day

400 CFM | 679.7
CMH*

400 CFM | 679.7
CMH*

SPECIFICATIONS

Model LGR 2800i F410 LGR 3500i F411
Weight 165 lbs | 75 kg 165 lbs. | 75 kg

Power

AHAM

130 pts. | 61.5 liters /
day

170 pts. | 80.4 liters /
day

Warranty information is available at www.dri-eaz.com.
Be sure to visit warranty.drieaz.com and regist er your

purchase to ensure you receive any important product
releases.

MICROBAN® is a registered trademark of Microban
Products Company.

max. (90°F/90%

Max process air

Air filter

Power cord
Construction Rotomolded shell Rotomolded shell

Safety

Specifications are subject to change without notice. Some values
may be approximate.

*Automatic variable speed for optimized performance.

200 pts. | 94.6 liters /
day

3M HAF filter
(part no. F421)

Detachable
25 ft. | 7.6 m

ETL certified to UL
474 and CSA 22.2
no. 92

240 pts. | 113.6 liters
/ day

3M HAF filter
(part no. F421)

Detachable
25 ft. | 7.6 m

ETL certified to UL
474 and CSA 22.2
no. 92

07-01674F 2011-04 Warranty 07-00420 11 Dri-Eaz Products, Inc.