Friedrich Kuhl KCM21A30A User manual

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Service Manual
Standard Chassis Models
Kühl KCS08A10A, KCS10A10A, KCS12A10A, KCS14A10A, KCM14A10A
KCS12A30A, KCS16A30A, KCM18A30A, KCM21A30A KCL24A30A,
KCL24A30B, KCL28A30A, KCL36A30A
KHS10A10A
KHM12A33A, KHM18A34A, KHL24A35A
115-Volt:
230-Volt:
Kühl +
Electric Heat
Kühl +
Heat Pump
230-Volt:
93001403_05
KES12A33A, KES16A33A, KEM18A34A, KEL24A35A, KEL24A35B,
KEL24A35C, KEL36A35A
115-Volt:
230-Volt:
THE EXPERTS IN ROOM AIR CONDITIONING
Kuhl ® Series
Room Air Conditioners
R-410A Refrigerant

2PB
Table of Contents
INTRODUCTION 3
Important Safety Information 3
Personal Injury Or Death Hazards 4
New Kühl Control Options 6
Component Identication 7
Model and Serial Number Location 7
Model Number Reference Guide 8
Serial Number Reference Guide 9
SPECIFICATIONS 10
Refrigeration Systems Performance Data 10
Installation 12
Electrical Data 13
OPERATION 15
Airow Selection and Adjustment 15
User Interface 16
Control Panel 28
Remote Control 29
Unit 30
General Knowledge Sequence Of Refrigeration 36
ROUTINE MAINTENANCE 37
Remove And Install The Front Cover 37
Standard Filter Removal / Installation Instructions 39
REMOVE AND INSTALL THE CHASSIS 41
TROUBLESHOOTING 43
Cooling Sizing Guide 43
Diagnostic Codes 44
Troubleshooting Tips 45
COMPONENT TESTING 53
Capillary Tube and Check Valve Assy (Heat Pump Units) 53
Capillary Tube Assy (Cool Only Units) 54
Reversing Valve Description And Operation 55
Testing The Reversing Valve Solenoid Coil 56
Checking The Reversing Valve 57
Touch Test Chart : To Service Reversing Valves 58
Compressor Checks 59
Fan Motor 61
Capacitors 61
Heating Element 62
Drain Pan Valve 62
Testing the User Interface and Electronic Control Board 63
Thermistors Description 63
Electronic Control Board Identication 64
Replace the Electronic Control Board 65
Replace the User Interface 65
R-410A SEALED SYSTEM REPAIR 66
Refrigerant Charging 67
Undercharged Refrigerant Systems 68
Overcharged Refrigerant Systems 69
Restricted Refrigerant System 70
Sealed System Method of Charging/ Repairs 71
Compressor Replacement 72
Replace The Reversing Valve 74
WIRING DIAGRAMS 75
INTERACTIVE PARTS VIEWER 86
Available Accessories 87
APPENDIX 88
Appendix 1 Thermistor Resistence Values (This Table Applies to All Thermistors) 88

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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 a 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 with the word
“WARNING”
or “CAUTION”. These words mean:
Indicates a hazard which, if not avoided, can result in severe personal
injury or death and damage to product or other property.
Indicates a hazard which, if not avoided, can result in personal injury and
damage to product or other property.
All safety messages will tell you what the potential hazard is, tell you
how to reduce the chance of injury, and tell you what will happen if the
instructions are not followed.
Indicates property damage can occur if instructions are not followed.
WARNING
Refrigeration system
under high pressure
Do not puncture, heat, expose to ame or
incinerate.
Only certied refrigeration technicians
should service this equipment.
R410A systems operate at higher pressures
than R22 equipment. Appropriate safe ser-
vice and handling practices must be used.
Only use gauge sets designed for use with
R410A.
Do not use standard R22 gauge sets.
NOTICE
CAUTION
WARNING
The information in this manual is intended for use by a qualied technician who is familiar with the safety procedures
required for installation and repair, and who is equipped with the proper tools and test instruments required to
service this product.
Due to continuing research in new energy-saving technology, all information in this manual is subject to change
without notice.
Installation or repairs made by unqualied persons can result in subjecting the unqualied person making such
repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which
can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered.
If you install or perform service on equipment, it is your responsibility to read and obey these warnings to guard
against any bodily injury or property damage which may result to you or others.
Important Safety Information INTRODUCTION

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SAFETY
FIRST
WARNING AVERTISSEMENT ADVERTENCIA
Do not remove, disable
or bypass this unit’s
safety devices. Doing so
may cause re, Doing so
may cause re, injuries,
or death.
Ne pas supprime, désacti-
ver ou contourner cette
l´unité des dispositifs de
sécurité, faire vous risque-
riez de provoquer le feu, les
blessures ou la mort.
No eliminar, desactivar o
pasar por alto los dispositi-
vos de seguridad de la
unidad. Si lo hace podría
producirse fuego, lesiones
o muerte.
ELECTRICAL HAZARDS:
• Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service.
• Make sure to follow proper lockout/tag out procedures.
• Always work in the company of a qualied assistant if possible.
• Capacitors, even when disconnected from the electrical power source, retain an electrical charge potential
capable of causing electric shock or electrocution.
• Handle, discharge, and test capacitors according to safe, established, standards, and approved procedures.
• Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary to test or
troubleshoot equipment with the power on to the unit.
• Do not spray water on the air conditioning unit while the power is on.
• Electrical component malfunction caused by water could result in electric shock or other electrically unsafe
conditions when the power is restored and the unit is turned on, even after the exterior is dry.
• Use air conditioner on a single dedicated circuit within the specied amperage rating.
• Use on a properly grounded outlet only.
• Do not cut or modify the power supply cord or remove the ground prong of the plug.
• Never operate the unit on an extension cord.
• Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles,
clothing, properly insulated tools, and testing equipment etc.
• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
INTRODUCTION
Personal Injury Or Death Hazards
WARNING
ALWAYS USE INDUSTRY STANDARD PERSONAL
PROTECTIVE EQUIPMENT (PPE)

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• REFRIGERATION SYSTEM REPAIR HAZARDS:
• Use approved standard refrigerant recovering procedures and equipment to relieve high pressure before open-
ing system for repair. Reference EPA regulations (40 CFR Part 82, Subpart F ) Section 608.
• Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moder-
ate injury.
• Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s ame or hot surfaces
can cause serious burns.
• Make certain to protect personal and surrounding property with re proof materials and have a re extinguisher
at hand while using a torch.
• Provide adequate ventilation to vent off toxic fumes, and work with a qualied assistant whenever possible.
• Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, ush-
ing etc.
• MECHANICAL HAZARDS:
• Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, han-
dling, or working around unit with moving and/or rotating parts.
• Be careful when, handling and working around exposed edges and corners of the sleeve, chassis, and other unit
components especially the sharp ns of the indoor and outdoor coils.
• Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.
• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
• PROPERTY DAMAGE HAZARDS
• FIRE DAMAGE HAZARDS:
• Read the Installation/Operation Manual for the air conditioning unit prior to operating.
• Use air conditioner on a single dedicated circuit within the specied amperage rating.
• Connect to a properly grounded outlet only.
• Do not remove ground prong of plug.
• Do not cut or modify the power supply cord.
• Do not use extension cords with the unit.
• Be extremely careful when using acetylene torch and protect surrounding property.
• Failure to follow these instructions can result in re and minor to serious property damage.
• WATER DAMAGE HAZARDS:
• Improper installation, maintenance or servicing of the air conditioner unit can result in water damage to personal
items or property.
• Insure that the unit has a sufcient pitch to the outside to allow water to drain from the unit.
• Do not drill holes in the bottom of the drain pan or the underside of the unit.
• Failure to follow these instructions can result in damage to the unit and/or minor to serious property damage.
INTRODUCTION
PERSONAL INJURY OR DEATH HAZARDS

6PB
INTRODUCTION
New Kühl Control Options
The new Kühl gives you a variety of options for control, programming, and scheduling including wireless capabilities.
Wireless Programming and Control:
Friedrich Connect allows you to conveniently control, program, and monitor your air conditioning unit remotely from a smartphone
or computer.
Programmable Timer Options:
Your unit’s digital control comes equipped with a 24-hour timer.
24-Hour Timer
The 24-hour timer allows you to set 2 temperature changes at pre-set times on the unit control panel.
Customizable Programming Options:
Customizable timers, with up to four temperature adjustments per day, can be set using Friedrich Connect for one or multiple units.
See www.friedrich.com for complete details on Friedrich Connect.
Figure 101 (New Kuhl Options)

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INTRODUCTION
This service manual is designed to be used in conjunction with the installation and operation manuals provided
with each air conditioning system.
This service manual was written to assist the professional service technician to quickly and accurately diagnose
and repair malfunctions.
Installation procedures are not given in this manual. They are given in the Installation/Operation manual which can
be aquired on the Friedrich website.
Model and Serial Number Location
MODELNUMBER
YS10M10A
SERIALNUMBER
LICY00008
VOLTS 115
60HZ / 1 PH
VOLTS MIN 108
COOLING
BTH/HR6500
EER12.0
AMPS8.0
HEATING
BTH/HR6500
EER10.4
AMPS7.0
REFRIGERANT
30.1OZ R410A
XXXXXXXXX
600PSIG HS
300PSIG LS
XXXXXXXXXX
XXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
FUSEPROTECTED
CIRCUITSUSE 15A
TIMEDELAY FUSE
X XX
XXXXX
XXXXXXXXXX
UL
AIRCONDITIONING CO.
SANANTONIO, TEXAS
ASSEMBLEDIN MEXICO
MODEL NUMBER
YS10M10A
SERIAL NUMBER
LICY00008
AIR CONDITIONING CO.
SAN ANTONIO, TEXAS
ASSEMBLED IN MEXICO
Accumulator
Compressor
Reversing Valve
Evaporator Coil
Blower Wheel
Electronic Control
Board
Control Key Pad
(User Interface)
Fan/Blower Motor
Fan Blade
Condenser Coil
Component Identication
Figure 102 (Component Identication)
Figure 103 (Model and Serial Number Location)

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INTRODUCTION
Model Number Reference Guide
MODEL TYPE
K - KUHL
W - WALLMASTER
FUNCTION
C - COOL ONLY
E - ELECTRIC HEAT
H - HEAT PUMP
APPLICATION
S - SMALL
M - MEDIUM
L - LARGE
APPROXIMATE COOLING
BTU / HR
ENGINEERING REVSION
LETTER INDICATES AN
ENGINEERING MODIFI-
CATION TO AN EXISTING
MODEL
MARKETING SUFFIX LETTER
INDICATES MODIFICATION TO
AN EXISTING MODEL
HEAT STRIP
0 - STRAIGHT COOL & HEAT
PUMP
3 -3.3 KW HEAT STRIP, NOMINAL
4 - 4.0 KW HEAT STRIP, NOMINAL
5 - 5.2 KW HEAT STRIP, NOMINAL
VOLTAGE
1 - 115 VOLTS
3 - 230 VOLTS
MODEL INTRODUCTORY
CHARACTER
A - 2019
B -
C -
D -
IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a
proper diagnosis and repair.
Figure 104 (Model Number Reference Guide)
K C M 21 A 3 0 A - A

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INTRODUCTION
Serial Number Reference Guide
YEAR OF MANUFACTURE
17 = 2017 18 = 2018
19 = 2019 20 = 2020
21 = 2021 22 = 2022
MONTH OF MANUFACTURE
01 = JANUARY
02 = FEBRUARY
03 = MARCH
04 = APRIL
05 = MAY
06 = JUNE
07 = JULY
08 = AUGUST
09 = SEPTEMBER
10 = OCTOBER
11 = NOVEMBER
12 = DECEMBER
FACTORY DESIGNATION
M = FRIEDRICH MTY
NUMERIC SEQUENCE
FIRST UNIT OF EACH MONTH = 00001
Figure 105 (Serial Number Reference Guide)
17 12 M 00001

10 PB
SPECIFICATIONS
Refrigeration Systems Performance Data
Model
Condensor
Temp
Deg F.
Discharge
Temp
Deg. F
Suction
Temp
Deg F
Electrical Ratings R-410A REF. Breaker
AMPS
COOL AMPS HEAT
LOCKED
ROTOR
AMPS CHARGE IN OZ Voltage
60
HERTZ
AMPS
Kühl® (Cool Only)
KCS08A10A 111 154 59 6.5 30.5 24.5 115 15
KCS10A10A 114 155 56 8.5 49 32 115 15
KCS12A10A 118 159 54 9.5 52 33 115 15
KCS12A30A-A 117 170 69 4.8 29 35.9 230 15
KCS12A30A-B 117 170 69 4.8 29 35.5 230 15
KCS12A30A-C 117 170 69 4.8 29 35.9 230 15
KCS12A30A-D 117 170 69 4.8 29 27.7 230 15
KCS14A10A-C 120 169 57 11.8 54.5 26 115 15
KCS14A10A-D 120 169 57 11.8 54.5 25 115 15
KCS16A30A-(A THRU D) 121 163 45 6.6 33 38.3 230 15
KCS16A30A-E 121 163 45 6.6 33 31 230 15
KCM14A10A 113 147 49 10.9 54.5 38 115 15
KCM18A30A 119 180 61 9.6 46 46 230 15
KCM21A30A 123 171 53 9.6 46 46 230 15
KCL24A30A
KCL24A30B 122 168 55 11.1 52 46 230 20
43
KCL28A30A-A, -C, -D 126 167 45 13.4 60 58.5 230 20
KCL28A30A-A, -C, -D 126 167 45 13.4 60 51.2 230 20
KCL36A30A 130 179 44 18.2 76 68 230 30
Kühl® + (Heat Pump)
KHS10A10A-A 116 153 54 8.8 9.1 50 28.5 115 15
KHS10A10A-B, -C 25.6 115
KHS12A33A 120 163 53 54.7 29 28 230 20
KHM18A34A 117 160 52 7.4 7.4 37 43.1 230 30
KHL24A35A 122 175 64 11.1 10.3 52 48 230 30
Kühl® + (Electric Heat)
KES12A33A 117 170 69 4.9 29 33 230 20
KES16A33A-(A THRU D) 121 163 45 6.6 33 38.3 230 20
KES16A33A-E 121 163 45 6.6 33 31 230 20
KEM18A34A 119 180 61 9.6 46 230 30
KEL24A35A
122 168 55 11.1 52
46
230 30
KEL24A35B 50
KEL24A35C 10.9 52
KEL36A35A 130 179 44 18.2 76 68 230 30
*Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp &
40% relative humidity, all systems use R-410A. Test done at highest unit fan speed.
Figure 201 (Refrigeration Systems Performance Data)

11 PB
Model UPC
Cooling
Btu
Heating
Btu Volts
Cooling
Amps
Cooling
Watts
Heating
Amps
Heating
Watts EER CEER COP
Moisture
Removal-
Pints/HR CFM Sleeve
Kühl®(Cool Only)
KCS08A10A 724587436631 8000 — 115 6.5 661 — — 12.1 12.0 —1.9 255
S
KCS10A10A 724587432640 10000 —115 8.5 826 — — 12.1 12.0 —2.9 300
KCS12A10A 724587432688 12000 —115 9.5 1000 — — 12.0 12.0 —3.5 300
KCS12A30A 724587432695 12000 —230 4.8 992 — — 12.1 12.0 —3.5 300
KCS14A10A 724587432701 13600 —115 11.8 1236 — — 11.0 10.9 —4.3 275
KCS16A30A 724587436678 15700 —230 6.6 1454 — — 10.8 10.7 —5.0 330
KCM14A10A 724587432435 13800 —115 10.9 1140 — — 12.1 12.0 —3.0 360
M
KCM18A30A 724587436617 20000 —230 9.6 1923 — — 10.4 10.3 —6.0 425
KCM21A30A 724587436624 21500 —230 9.6 2067 — — 10.4 10.3 —6.0 425
KCL24A30A
KCL24A30B 724587436549
24000
—230 11.1 2308 — — 10.4 10.3 —7.5 640
L
23000
KCL28A30A 724587432657 28000 —230 13.4 2800 — — 10.0 9.9 —9.3 640
KCL36A30A 724587436556 35000 —230 18.2 3846 — — 9.1 9.0 —11.0 725
Kühl®+ (Heat Pump)
KHS10A10A* 724587432541 10000 8800 115 8.8 917 9.1 978 10.9 10.8 2.6 2.0 300
S
KHS12A33A 724587436525 12000 9800 230 5.0 1101 4.7 1257 10.9 10.8 2.9 3.0 375
KHM18A34A 724587436532 17500 14900 230 7.4 1606 7.4 1568 10.9 10.8 2.8 5.6 370 M
KHL24A35A 724587432633 24000 21000 230 11.1 2330 10.3 2211 10.3 10.2 2.8 7.0 600 L
Kühl®+ (Electric Heat)
KES12A33A 724587430004 12000 10700 230 4.9 1091 16.0 3500 11.0 10.9 —3.6 325
S
KES16A33A 724587436678 15700 10700 230 6.6 1454 16.0 3500 10.8 10.7 —3.4 300
KEM18A34A 72458743249 20000 13000 230 9.6 1923 19.5 4200 10.4 10.3 —6.0 750 M
KEL24A35A
KEL24A35B 724587431612
24000
17300 230
11.1
2308 24.0 5500 10.4 10.3 —7.0 425
L
KEL24A35C 23000 10.9
KEL36A35A 724587436563 35000 17300 230 18.2 3846 24.0 5500 9.1 9.0 —11.0 725
* KHS10A10A heat pump operates on 115 volt and is not equipped with supplemental heat. Will not provide heat at tem-
peratures below 40˚F.
Friedrich room air conditioners are designed to operate in cooling mode with outdoor temperatures from 60˚F to 115˚F.
SPECIFICATIONS
Figure 202 (Specications)

12 PB
Sleeve
Height
Inches
Width
Inches
Depth
with Front
Inches
Shell
Depth
to Louvers
Inches
Minimum
Extension
Into Room*
Inches
Minimum
Extension
Outside
* Inches
Window Width
INCHES
In-wall Installation
Finished Hole Inches
Carton Dimensions
Inches
Minimum** Maximum Height Width
Max. Depth
Height Width Depth
S15 15/16" 25 15/16" 29" 8 3/4" 5 3/4" 16 15/16" 27 3/8" 42" 16 3/16" 263/16" 7 3/8" 19"29"34 1/2"
M17 15/16" 25 15/16" 29" 8 3/4" 5 3/4" 16 15/16" 27 3/8" 42" 18 3/16" 26 3/16" 7 3/8" 21" 29" 34 1/2"
L20
3
/ 16 "28" 35
1
/ 2 "16
1
/ 2 " 5
3
/ 8 "18
15
/ 16 " 29
7
/ 8 "42" 20
3
/ 8 "28
1
/ 4 "15
1
/ 8 " 24
1
/ 2 " 31
5
/ 8 " 38
7
/ 8 "
SPECIFICATIONS
Installation
FRONT
SIDE VIEW
SLEEVE DIMENSIONS DRAWING
CHASSIS SEAL GASKET
NOTE: WHEN INSTALLING THE CHASSIS
SEAL GASKET, BEGIN AT EITHER BOTTOM
CORNER AND GO UP THE SIDE & ACROSS
THE TOP & DOWN THE OPPOSITE SIDE.
Improper installation of chassis seal gasket can cause performance problems and excessive noise or vibration.
If chasis seal damage is worn, damaged, or missing, install new gasket.
For further instructions on the installation of this unit refer to the Installation / Operation Manual (93001015_00)
Installation Clearances
Improper installation of the Air Conditioner can cause poor performance and premature wear of the unit.
Ensure that the KUHL unit is installed with proper clearances as described below.
Ensure no obstructions. or enclosures are within clearances limits to allow for proper airow.
Clearances
Top and Bottom of Unit - One (1) foot
Sides of Unit - One (1) foot
Front of Unit - Three (3) feet
Rear of Unit - Three (3) feet
Figure 203 (Installation Specications)
Figure 204 (Sleeve Dimensions) Figure 205 (Chasis Gasket)

13 PB
SPECIFICATIONS
Electrical Data
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
All electrical connections and wiring MUST be
the National Electrical Code and all local codes
which have jurisdiction.
Failure to do so can result in personal injury or
death.
NOTICE
FIRE HAZARD
electically unsafe conditions which could cause moderate
or serious property damage.
Read, understand and follow the above warning.
Circuit Rating/Breaker/power cord/ wall Receptacle
Model
Circuit Rating
Breaker or
T-D Fuse
Plug Face
(NEMA#)
Power Cord
Length (ft.)
Required Wall
Receptacle
NEMA NO.
Wall Outlet
Appearance
KCS08A10, KCS10A10, KCS12A10
KCS14A10, KHS10A10, and
KCM14A10.
125V - 15A 5 - 15P 6 5-15R
KCS12A30, KCS16A30,
KCM18A30, and KCM21A30. 250V - 15A 6 - 15P 6 6-15R
KES12A33, KES16A33,
KHS12A33, KCL24A30, and
KCL28A30.
250V - 20A 6 - 20P 6 6-20R
KEM18A34, KHL24A35,
KHM18A34A, KCL36A30,.
KEL24A35, and KEL36A35.
250V - 30A 6 - 30P 6 6-30R
Wire Size - Use ONLY wiring size recommended by the National Electric Code (NEC) for single outlet branch
circuit.
Fuse/ Circuit Breaker - Use ONLY the correct HACR type and size fuse/circuit breaker. Read electrical ratings on
unit’s rating plate. Proper circuit protection is the responsibiity of the homeowner.
Grounding - Unit MUST be grounded from branch circuit through service cord to unit, or through separate ground
wire provided on permanently connected units. Be sure that branch circuit or general purpose outlet is grounded.
Receptacle - The eld supplied outlet must match plug on service cord and be within reach of service cord. Do
NOT alter the service cord or plug. Do NOT use an extension cord. Refer to the table above for proper receptacle
and fuse type.
Figure 206 (Circuit Breaker / Plug / Receptacle / Cord Rating)

14 PB
WARNING
Electrical Shock Hazard
Make sure your electrical receptacle
has the same conguration as your air
conditioner’s plug. If different, consult
a Licensed Electrician.
Do not use plug adapters.
Do not use an extension cord.
Do not remove ground prong.Always
plug into a grounded 3 prong outlet.
Failure to follow these instructions
can result in death, re, or electrical
shock.
Make sure the wiring is adequate for your unit.
If you have fuses, they should be of the time delay type. Before you install or relocate this unit, be sure that the
amperage rating of the circuit breaker or time delay fuse does not exceed the amp rating listed in Table 206.
DO NOT use an extension cord.
The cord provided will carry the proper amount of electrical power to the unit; an extension cord may not.
Make sure that the receptacle is compatible with the air conditioner cord plug provided.
Proper grounding must be maintained at all times. Two prong receptacles must be
replaced with a grounded receptacle by a certied electrician.
The grounded receptacle should meet all national and local codes and ordinances. You must use the three prong plug
furnished with the air conditioner. Under no circumstances should you remove the ground prong from the plug.
Test the power cord.
All Friedrich room air conditioners are shipped from the factory with a Leakage Current
Detection Interrupter (LCDI) equipped power cord. The LCDI device on the end of the cord
meets the UL and NEC requirements for cord connected air conditioners.
To test your power supply cord:
1. Plug power supply cord into a grounded 3 prong outlet.
2. Press RESET (see Figure 207).
3. Press TEST, listen for click; the RESET button trips and pops out.
4. Press and release RESET (Listen for click; RESET button latches and remains in). The power cord is ready for use.
Once plugged in, the unit will operate normally without the need to reset the LCDI device. If the LCDI device fails to trip when
tested or if the power supply cord is damaged, it must be replaced with a new power supply cord from the manufacturer.
NOTICE
Do not use the LCDI device as an ON/OFF
switch.
Failure to adhere to this precaution may
cause premature equipment malfunction.
WARNING:
TEST BEFORE EACH USE!
1. PRESS RESET BUTTON.
2. PLUG LCDI INTO POWER
RECEPTACLE.
3. PRESS TEST BUTTON,
RESET BUTTON SHOULD
POP UP.
4. PRESS RESET BUTTON
FOR USE.
DO NOT USE IF ABOVE
TEST FAILS.
RESET
TEST
Green LED
Indicator
Light
(Illuminated
when ready
for use)
SPECIFICATIONS
Electrical Data
Figure 207 (LCDI Power Cord)

15 PB
The airow path may be adjusted to distribute air independently from the left or right side of the discharge opening. Each of the
banks of louvers can be directed left, right, up, or down in order to achieve the most optimum airow positioning.
To adjust airow direction, grab the lever in the center of the louver bank and move it in the direction that you would like the air
to be directed. Please note that it is normal that airow may be stronger out of one side of the louvers than the other.
Fresh air and exhaust control
Your air conditioner has the ability to bring fresh air into the room or exhaust stale air out of the room. The control slide is found on
the upper part of the unit (see Figure 301).
TO BRING IN FRESH AIR – Move the lever to the Fresh Air position which allows outside air to enter the room. This is useful
in fall and spring as a means of bringing in fresh outside air when using FAN ONLY. It can also be used in the summer with the
compressor in the Cooling Mode if you wish.
TO EXHAUST INDOOR AIR – Move the lever to the Exhaust position. This will allow stale air to be expelled to the outside of
the dwelling. This is especially handy in the spring or fall when indoor air tends to get stale, or after a social gathering involving
smokers, or to remove cooking odors.
BEST PERFORMANCE – Move the lever to the Re-Circulate Position. This is the most efcient mode for cooling and heating. In this
mode the unit will not bring air in or exhaust air.
OPERATION
Airow Selection and Adjustment
Air Lever
Figure 301 (AIRFLOW SELECTION AND ADJUSTMENT)

16 PB
OPERATION
User Interface
All of the control panel function buttons and mode icons can be viewed in Figures 302 and 303.
Power On – Press the button to turn on the air conditioner. The power button illuminates to indicate that the power is on. The
backlight on the power switch will automatically turn off after 20 seconds of inactivity. The remote control can also be used to
turn power ON / OFF (see Remote Control).
Display – The display is a high efciency LCD with a built-in backlight. After 20 seconds of inactivity, the display switches off.
Touching any button automatically changes the display to full brightness.
There are three control push buttons on each side of the display.
MODE
Cycles between AUTO,
HEAT, COOL, or FAN
ONLY
CONTROL PANEL
TEMPERATURE
INCREMENT UP
AND DOWN
ON / OFF
Turns unit on / off
IR WINDOW
Do not block
FAN
Sets fan to either:
-automatically cycle
-continuosuly run
SPEED
Sets fan speed
LOW, MED, HIGH, OR MAX
(Actual settings are model
dependent)
DISPLAY
Figure 303
Figure 302
Unit
Mode
Display
Disconnected From
Power Board
Control
Locked
Wi-Fi Operating
State
2 Digit Display
Shows Settings for:
-Set Point
(Temperature)
-Clock (AM/PM)
Filter
Check /
Clean
Timer/
Schedule
Shows
On / Off

17 PB
OPERATION
User Interface
Accessing Sub-Menus
The MENU button accesses the sub-menu. See Figure 10.
Figure 304
MENU RETURN
Press the Menu Button to enter the Menu. See Figure 304.
The arrow buttons navigate the 6 menu options. See Figure 305.
– LIM – LOCK
– TM – CnCT
– F-C – diAG
The return button exits the menu. See Figure 305.
Figure 305
Figure 306
MENU RETURN
MENU RETURN

18 PB
OPERATION
User Interface
Navigating Inside the Sub-Menus
The MENU button moves you forward through the sub-menu. See Figure 307.
The return button moves you backward once inside the LIM and TM menus. See Figure 308.
Figure 307
MENU RETURN
Figure 308
MENU RETURN

19 PB
OPERATION
User Interface
The LIM Menu (LIMIT)
This is the limit menu. See Figure 309.
Upon entering the menu, the rst option will be to set the lower setpoint limit using the arrow buttons. See Figure 310.
Then you can set the higher setpoint limit using the arrow buttons. See Figure 311.
Pressing the menu button completes the limit setting. See Figure 312.
Figure 309
MENU RETURN
Figure 310
MENU RETURN
Figure 311
Figure 312
MENU RETURN
MENU RETURN

20 PB
MENU RETURN
MENU RETURN
OPERATION
User Interface
The TM Menu (Timer)
This is the TM menu used to set a timer. See Figure 313.
In the menu, you set the current time using the arrow buttons. See Figure 314. (Note: These two “set clock” steps will be
skipped if the unit is already connected to Wi-Fi.)
First, set the hour.
Using the MENU button, you switch to the minutes and complete setting the time. See Figure 315.
You select your mode. Either cool, heat, or auto. Toggle these using the mode button. See Figure 316. (Note: cooling-only mod-
els skip this step.)
The process is the same for all three modes. Auto mode will be shown as the example.
Figure 313
MENU RETURN
Figure 314
MENU RETURN
Figure 315
Figure 316