LG RN1840 Series User manual

www.lg.com
Copyright © 2022 LG Electronics Inc. All Rights Reserved.
COMMERCIAL
DRYER
OWNER’S MANUAL
Before beginning installation, read these instructions carefully.
This will simplify installation and ensure that the dryer is installed
correctly and safely. leave these instructions near the dryer after
installation for future reference.
RN1840CD1
RN1840CN1
RN1840CD4
RN1840CN4
RN1840CD7
RN1840CN7
MFL67863753
Rev.00_122321
ENGLISH

2CONTENTS
CONTENTS
3PRODUCT FEATURES
4IMPORTANT SAFETY
INSTRUCTIONS
5 BASIC SAFETY PRECAUTIONS
10 GROUNDING INSTRUCTIONS
11 SAFETY INSTRUCTIONS FOR INSTALLATION
17 INTRODUCING YOUR DRYER
17 Specification
18 Control panel features
21 OPERATION YOUR DRYER
22 PROGRAMMING MODE
23 Structure of Programming mode – Card/Coin
type
24 Structure of Programming mode – OPL type
25 Programing Mode – Setup Mode
25 1. Regular Price Setup
26 2. Special Price Setup
27 3. Top Off Price Setup
28 4. Features of the Machine (1st Set)
29 4-1. Special Price Day Setup
30 4-2. Sense Dry Setup
31 4-3. Top Off Setup
32 4-4. Pause Function Setup
33 5. Special Price Day Setup
34 6. Special Price Beginning Time Setup
35 7. Special Price Ending Time Setup
36 8. Dry Time Setup
37 9. Special Day Dry Time Setup
38 10.Top Off Time Setup
39 11. Coin 1 Value Setup
40 12. Penny Increment Pricing Offset Setup
41 13. Beep Volume Setup
42 14.Thermistor control temperature Setup
43 15.Standby Return Time Setup
44 16. Type
45 16-1. Product Type Setup
46 16-2. Currency Type Setup
47 16-3. Vend Type Setup
48 16-4. Card Reader Type Setup
49 16-5.Coin Drop Type Setup
50 Programing Mode – Test Mode
50 1. Test
51 2. Diagnostic Test
52 3. Factory Reset
53 4. Time Setup
54 5. Courtesy Cycle
54 6. Kill Cycle
55 7. Duck Ceck
56 8. Password Setup
57 Programing Mode – Collect Mode
58 Collect Mode Data List
60 SMART FUNCTIONS
61 MAINTENANCE
62 STACK MACHINE INSTALLATION
INSTRUCTIONS
64 ERROR MODE
64 POWER FAIL RECOVERY
64 DEFAULT DRYER SETTINGS
65 INSTALLATION GUIDE FOR
HARMONICS AND FLICKER
66 SPECIFICATIONS

3
PRODUCT FEATURES
ENGLISH
PRODUCT FEATURES
ARTISTIC DESIGN
Modern front panel look and big clear glass door make your dryer look stylish
EASY OF USE
An entire selection of user-friendly functions makes operating the dryer easy.
COMMERCIAL LAUNDRY APPS
- Laundry Lounge Installer : This app allows installers to register products on the server. It is only available to
authorized users.
※Download Laundry Lounge Installer at shared link from Official LG B2B channel.
- Laundry Lounge : This app allows users to do real-time monitoring of registered stores and products.
※ Search for Laundry Lounge in the Google Play Store or Apple App Store.

4IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
WARNING
For your safety, the information in this manual must be followed to
minimize the risk of fire or explosion, electric shock, or to prevent
property damage, Injury to persons, or death.
Your Safety and the safety of others is very important.
We have provided many important safety messages in this manual and
on your appliance.
Always read and obey all safety messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you
and others.
All safety messages will follow the safety alert symbol and either the
word DANGER, WARNING, or CAUTION.
These words mean:
DANGER
You will be killed or seriously injured if you don’t immediately follow
instructions.
WARNING
You can be killed or seriously injured if you don’t follow instructions.
CAUTION
You may be slightly injured or cause damage to the product if you do
not follow instructions.
All safety messages will tell you what the potential hazard is, tell you
how to reduce the chance of injury, and tell
you what can happen if the instructions are not followed.

5
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
•Read all instructions before using
the dryer.
•Before use, the dryer must be
properly installed as described in
this manual.
•Do not place items exposed to
cooking oils in your dryer. Items
contaminated with cooking oils
may contribute to a chemical
reaction that could cause a load
to catch fire.
•Do not dry articles that have been
previously cleaned in, washed
in, soaked in, or spotted with
gasoline, dry-cleaning solvents,
or other flammable or explosive
substances as they give off vapors
that could ignite or explode.
This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way
and understand the hazards involved. Children shall not
play with the appliance. Cleaning and user maintenance
shall not be made by children without supervision.
Children of less than 3 years should be kept away unless
continuously supervised.
Before installation, check that the local distribution
conditions, nature of gas and pressure, and the
adjustment of the appliance are compatible.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
BASIC SAFETY PRECAUTIONS
WARNING
To reduce the risk of fire, electric shock, or injury to persons when using
this appliance, follow basic precautions, including the following:

6IMPORTANT SAFETY INSTRUCTIONS
•Do not reach into the dryer if the
drum or any other part is moving.
•Do not repair or replace any
part of the dryer or attempt
any servicing unless specifically
recommended in this Owner’s
Manual or in published user-
repair instructions that you
understand and have the skills to
carry out.
•Do not tamper with controls.
•Before the dryer is removed from
service or discarded, remove the
door to the drying compartment.
•Do not allow children to play on
or in the dryer. Close supervision
of children is necessary when the
dryer is used near children.
•Do not use fabric softeners or
products to eliminate static
unless recommended by the
manufacturer of the fabric
softener or product.
•Do not use heat to dry articles
containing foam rubber or
similarly textured rubber-like
materials.
•Keep area around the exhaust
opening and adjacent
surrounding areas free from the
accumulation of lint, dust, and
dirt.
•The interior of the dryer and
exhaust vent should be cleaned
periodically by qualified service
personnel.
•Do not install or store the dryer
where it will be exposed to the
weather.
•Always check the inside of the
dryer for foreign objects.
•Clean lint screen before or after
each load.
•Do not dry unwashed items in
the tumble dryer.
•Items that have been soiled
with substances such
as cooking oil, acetone,
alcohol,petrol,kerosene,spot
removers, turpentine, waxes and
wax removers should be washed
in hot water with an extra amount
of detergent before being dried
in the tumble dryer.
•Items such as foam rubber(latex
foam), shower caps, waterproof
textiles, rubber backed articles
and clothes or pillows fitted with
foam rubber pads should not be
dried in the tumble dryer.
•Fabric softeners, or similar
products, should be used as
specified by the fabric softener
instructions.

7
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
WARNING
Never stop a tumble dryer before the end of the drying cycle unless
all items are quickly removed and spread out so that the heat is
dissipated.
•The lint filter should be cleaned
after every cycle or every day.
•Lint must not to be allowed to
accumulate around the tumble
dryer.
•Adequate ventilation has to be
provided to avoid the back flow
of gases into the room from
appliances burning other fuels,
including open fires.
•Gas Dryer Max capacity is 13,6kg
•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
not to play with the appliance.
•The tumble dryer is not to be
used if industrial chemicals have
been used for cleaning
•The final part of a tumble dryer
cycle occurs without heat(cool
down cycle) to ensure that the
items are left at a temperature
that ensures that the items will
not be damaged.
•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.
•Never operate the dryer without
lint filter in place. Never operate
the dryer with a wet lint filter.
•This appliance is intended to be
used in areas for communal use
or in launderettes only and not in
household applications.
•Remove all objects from pockets
such as lighters and matches.
•The fixed wiring insulation must
be protected by insulating
sleeving having an appropriate
temperature rating.
•If the appliance is not fitted
with a supply cord and a plug,
means for disconnection must be
incorporated in the fixed wiring in
accordance with the wiring rules.

8IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
Disposal of your old appliance
1. This crossed-out wheeled bin symbol indicates that
waste electrical and electronic products (WEEE) should
be disposed of separately from the municipal waste
stream.
2. Old electrical products can contain hazardous
substances so correct disposal of your old appliance
will help prevent potential negative consequences for
the environment and human health. Your old appliance may contain
reusable parts that could be used to repair other products, and other
valuable materials that can be recycled to conserve limited resources.
3. You can take your appliance either to the shop where you purchased
the product, or contact your local government waste office for details
of your nearest authorised WEEE collection point. For the most up to
date information for your country please see www.lg.com/global/
recycling
What is not covered.
Service trips to instruct you on the product.
If the product is connected to any voltage other than that shown on the
rating plate.
Damage caused by lightning strike or power surge.
If the fault is caused by accidents, neglects, misuses and atural disasters.
If the fault is caused by reasons except for normal use or use in
accordance with the owner’s manual.
If the fault is caused by pests, for example, rats or cockroaches etc...
Correcting the installation for example, leveling the product. Normal
maintenance recommended by the owner’s manual. Removal of foreign
objects/substances from the machine, for example, grit, nails, bra wires
and buttons etc...
Replace fuses in or correct wiring or correct gas supply.

9
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
Correction of unauthorized repairs.
Incidental or consequential damage to personal property caused by
possible defects with this appliance.
If the product is installed outside the normal service area, any cost of
transportation involved in the repair of the products, or the replacement
of a defective part, shall be borne by the owner.
READ ALL INSTRUCTIONS BEFORE USE
WARNING
For your safety, the information in this manual must be followed to
minimize the risk of fire or explosion, electric shock, or to prevent
property damage, Injury to persons, or death.
•Do not store or use gasoline
or other flammable vapors
and liquids in the vicinity of
this appliance or any other
appliances.
•Installation and service must
be performed by a qualified
installer, service agency, or the
gas supplier.
WHATTO DO IFYOU SMELL GAS: (APPLICABLE FOR
GAS MODELS)
1. Do not try to light a match or
cigarette, or turn on any gas
or electrical appliance.
2. Do not touch any electrical
switches. Do not use any
phone in your building.
3. Clear the room, building, or
area of all occupants.
4. Immediately call your gas
supplier from a neighbor’s
phone. Follow the gas
supplier’s instructions
carefully.
5. If you cannot reach your gas
supplier, call the fire
department.

10 IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
WARNING
For your safety, the information in this manual must be followed to
minimize the risk of fire or explosion, electric shock, or to prevent
property damage, injury to persons, or death.
GROUNDING INSTRUCTIONS
This appliance must be grounded.
In the event of malfunction or
breakdown, grounding will reduce
the risk of electric shock by
providing a path of least resistance
for electric current. This appliance
must be equipped with a cord
having an equipmentgrounding
conductor and a grounding plug.
The plug must be plugged into an
appropriate outlet that is properly
installed and grounded in
accordance with all local codes and
ordinances. Do not use an adapter
or extension cord. Do not remove
ground prong. If you don’t have
the proper outlet, consult an
electrician.
Do not modify the plug provided
with the appliance.
If it will not fit the outlet, have a
proper outlet installed by a
qualified electrician.
This appliance must be connected
to a grounded metal, permanent
wiring system or an
equipmentgrounding conductor
must be run with the circuit
conductors and connected to the
equipmentgrounding terminal or
lead on the appliance. Electric
shock can result if the dryer is not
properly grounded. The appliance
may only be installed in a room if
the room meets the appropriate
ventilation requirements specified
in the national installation
regulations. Minimum required
spacing of 2,54cm to adjacent
appliances, walls and furniture.
WARNING
Improper connection of the equipment-grounding conductor can
result in a risk of electric shock. Check with a qualified electrician or
service person if you are in doubt as to whether the appliance is properly
grounded.

11
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
SAFETY INSTRUCTIONS FOR INSTALLATION
WARNING
To reduce the risk of fire, electric shock, or injury to persons when using
this appliance, follow basic precautions, including the following:
•Properly ground dryer to
conform with all governing
codes and ordinances. Follow
details in the installation
instructions. Electric shock can
result if the dryer is not properly
grounded.
•Before use, the dryer must be
properly installed as described
in this manual. Electric shock can
result if the dryer is not properly
grounded.
•Install and store the dryer
where it will not be exposed to
temperatures below freezing
or exposed to the weather.
•All repairs and servicing must
be performed by an authorized
servicer unless specifically
recommended in this Owner’s
Manual. Use only authorized
factory parts. Failure to follow
this warning can cause serious
injury, fire, electric shock, or
death.
•To reduce the risk of electric
shock, do not install the dryer
in humid spaces. Failure to
follow this warning can cause
serious injury, fire, electric shock,
or death.
•Connect to a properly rated,
protected, and sized power
circuit to avoid electrical
overload. Improper power circuit
can melt, creating electric shock
and/or fire hazard.
•Remove all packing items
and dispose of all shipping
materials properly. Failure to do
so can result in death, explosion,
fire, or burns.
•Place dryer at least 18 in.
above the floor for a garage
installation. Failure to do so can
result in death, explosion, fire, or
burns.
•Keep all packaging from
children. Packaging material
can be dangerous for children.
There is a risk of suffocation.
•Keep the area underneath and
around your appliances free of
combustible materials such as
lint, paper, rags, chemicals, etc.
Failure to do so can result in fire.
•Do not place candles, smoking
materials, or other flammables
on to top of the product.
Dripping wax, smoke, or fire can
result.

12 IMPORTANT SAFETY INSTRUCTIONS
•Remove all protective vinyl film
from the product. Failure to do
so can cause product damage,
smoke or fire.
•Means for disconnection
with contact separation at
least 3mm is that the means
for disconnection must be
incorporated in the fixed wiring
according to the wiring rules.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
WARNING
For your safety, the information in this manual must be followed to
minimize the risk of fire or explosion, electric shock, or to prevent
property damage, injury to persons, or death.
SAFETY INSTRUCTIONS FOR INSTALLATION
•The appliance is not to be used by
children or persons with reduced
physical, sensory or mental
capabilities, or lack of experience
and knowledge, unless they
have been given supervision or
instruction.
Children being supervised not to
play with the appliance.
•That the appliance must not be
installed behind a lockable door,
a sliding door or a door with a
hinge on the opposite side to that
of the tumble dryer, in such a way
that a full opening of the tumble
dryer door is restricted.

13
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
Exhaust/Ducting:
•Gas dryers MUST be exhausted
to the outside. Failure to follow
these instructions can result in
fire or death.
•The dryer exhaust system must
be exhausted to the outside
of the dwelling. If the dryer is
not exhausted outdoors, some
fine lint and large amounts
of moisture will be expelled
into the laundry area. An
accumulation of lint in any area of
the home can create a health and
fire hazard.
•Use only rigid metal or flexible
metal 4-inch (10,2 cm) diameter
ductwork inside the dryer
cabinet or for exhausting to the
outside. Use of plastic or other
combustible ductwork can
cause a fire.
Punctured ductwork can cause
a fire if it collapses or becomes
otherwise restricted in use or
during installation.
•Ductwork is not provided with
the dryer, and you should
obtain the necessary ductwork
locally. The end cap should
have hinged dampers to
prevent backdraft when the
dryer is not in use. Failure to
follow these instructions can
result in fire or death.
•Exhaust air must not be
discharged into a flue which
Is used for exhausting fumes
from appliances burning gas or
other fuels.
•The exhaust duct must be 4
inches (10,2 cm) in diameter
with no obstructions. The
exhaust duct should be kept
as short as possible. Make
sure to clean any old ducts
before installing your new
dryer. Failure to follow these
instructions can result in fire or
death.
•DO NOT use sheet metal screws
or other fasteners which extend
into the duct that could catch
lint and reduce the efficiency
of the exhaust system. Secure
all joints with duct tape. For
complete details, follow the
Installation Instructions. Failure
to follow these instructions can
result in fire or death.
•In the appliance enclosure or
in the built-in structure, keep
ventilation opening clear of
obstruction.

14 IMPORTANT SAFETY INSTRUCTIONS
•Adequate ventilation has to be
provided to avoid the back flow
of gases into the room from
appliances burning other fuels,
including open fires Do not dry
unwashed items in the tumble
dryer.
•Installation is to be in
accordance with the local gas
authority.
•A carpet must not obstruct the
openings.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
WARNING
For your safety, the information in this manual must be followed to
minimize the risk of fire or explosion, electric shock, or to prevent
property damage, injury to persons, or death.
WARNING
To reduce the risk of fire, electric shock, or injury to persons when using
this appliance, follow basic precautions, including the following:
•Do not, under any
circumstances, cut or remove
the ground prong from the
power cord. To prevent injury
to persons or damage to the
dryer, the electrical power cord
must be plugged into a properly
grounded outlet.
•For personal safety, this dryer
must be properly grounded.
Failure to do so can result in
electric shock or injury.
•Refer to the installation
instructions in this manual for
specific electrical requirements
for your model.
Failure to follow these
instructions can create an electric
shock hazard and/or a fire hazard.
•This dryer must be plugged into
a properly grounded outlet.
Electric shock can result if the
dryer is not properly grounded.
Have the wall outlet and
circuit checked by a qualified
electrician to make sure the
outlet is properly grounded.
Failure to follow these
instructions can create an electric
shock hazard and/or a fire hazard.

15
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
•The dryer should always be
plugged into its own individual
electrical outlet which has a
voltage rating that matches
the rating plate. This provides
the best performance and also
prevents overloading house
wiring circuits which could cause
a fire hazard from overheated
wires.
•Never unplug your dryer by
pulling on the power cord.
Always grip plug firmly and
pull straight out from the
outlet. The power cord can be
damaged, resulting in a risk of fire
and electric shock.
•Repair or replace immediately
all power cords that have
become frayed or otherwise
damaged. Do not use a cord
that shows cracks or abrasion
damage along its length or at
either end. The power cord can
melt, creating electric shock and/
or fire hazard.
•When installing or moving the
dryer, be careful not to pinch,
crush, or damage the power
cord. This will prevent injury and
prevent damage to the dryer
from fire and electric shock.
•To reduce the risk of injury
to persons, adhere to all
industry recommended safety
procedures including the use of
long sleeved gloves and safety
glasses. Failure to follow all of the
safety warnings in this manual
could result in property damage,
injury to persons or death.
•The final part of the tumble dryer
cycle occurs without heat (cool
down cycle) to ensure that the
items are left at a temperature
that ensures that the items will
not be damaged.
SAVE THESE INSTRUCTIONS

16 IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
CAUTION
These instructions are only valid if the following country code is on the
appliance. If this code is not present on the appliance, it is necessary to
refer to the technical instructions which will provide the necessary
information concerning the modification of the appliance to the
condition of use for the country Before installation, check that the local
distribution conditions, nature of gas and pressure, and the adjustment
of the appliance are compatible.
•the method of connection and the installation regulations in the
country where the appliance is to be installed (if such regulations
exist); also the ventilation dimensions shall be given for the purposes
of installation in those countries where there are no appropriate
regulations.
WARNING
Never stop a tumble dryer before the end of the drying cycle unless all
items are quickly removed and spread out so that the heat is dissipated.
WARNING
The appliance must not be supplied through an external switching
device, such as a timer, or connected to a circuit that is regularly switched
on and off by a utility.
SAVE THESE INSTRUCTIONS

17
INTRODUCING YOUR DRYER
ENGLISH
INTRODUCING YOUR DRYER
Specification
Type : Gas fired tumble dryer
Rating : Please refer to the rating label regarding detailed information.
Single dryer size : 737 mm(W) x 810 mm(D) x 1022 mm(H)
Stack dryer size : 737 mm(W) x 810 mm(D) x 2040 mm(H)
Capacity : 13,6 kg
Weight : 68,2 kg
A-weighted emission sound pressure lebel : < 70dB(A)
Specifications are subject to change by manufacturer.
※ Model nomenclature “Ra1840wxyz”
- a : dryer type →N(LNG) / P(LPG)
- w : body color →A(White) / C(Silver)
- x : vend type →N(Coin type) / D(Card/OPL type) / blank(OPL type)
- y : installation type →1(Lower) / 4(Side by side) / 7(Upper)
- z : product type →blank(Light Titan-C)
Specifications subject to change by manufacturer.
NOTE
3”
(7,6 cm)
18”
(45,72 cm)
14”max
(35,6 cm)
ventilation
hole
ventilation
hole
Closet door
Closet-Front door
Closet-Side view
Stacking Kit view
48”
(310 cm2)
24”
(155 cm2)
3”
(7,6 cm)
0”
(0 cm) 29” (73,7 cm) 0” (0 cm) 1”
(2,5 cm)
1”
(2,54 cm) 1” (2,54 cm)(81,2 cm)
1”
(2,5 cm)
80,3”
(204,0 cm)
29”
(73,7cm)

18 INTRODUCING YOUR DRYER
Control panel features
Card type
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
OPL type
- Side by Side (RN1840CD4)
- Stack upper (RN1840CD7)
- Stack lower (RN1840CD1)
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1. Display LED
2. Cycle button
3. Start/Pause button
4. Status LED

19
INTRODUCING YOUR DRYER
ENGLISH
Control panel features
Coin type
- Side by Side (RN1840CN4)
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
- Stack upper (RN1840CN7)
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
- Stack lower (RN1840CN1)
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1. Display LED
2. Cycle button
3. Start/Pause button
4. Status LED

20 INTRODUCING YOUR DRYER
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
1 24
3
Display LED Cycle button
Start button
Status LED
Display LED
The Display shows the vend price, remaining time, and
programming options.
Error codes are also displayed here.
Cycle button
Press the cycle button to Select the desired cycle based
on laundry types and conditions.
High Temp.
Use this cycle to get high heat for heavy fabrics, such
as jeans corduroys or work clothes (High heat).
Med Temp.
Use for drying sturdy fabrics such as work casual
clothes (Medium heat).
Low Temp.
Use for drying synthetic fabrics,washable knit fabrics
and noiron finishes (Low heat).
No Heat
Use for items that require heat-free drying such as
plastics or rubber.
Start/Pause button
The Start LED flashes when the full vend price has been
satisfied then the cycle has been chosen or the machine
is paused.
The Start LED flashes when a card is inserted to add time
to the current cycle.
Status LED
LED Description
LED flashes when the duct is blocked by
lint.
Check and clean the duct.
LED flashes whenever the heating cycle
is in operation.
LED flashes whenever the cool down
cycle is in operation.
LED flashes when the Wi-Fi is connecting.
LED stays lit when the Wi-Fi is connected.