Friedrich KUHL R-410A User manual

Service Manual
R-410A Models
Room Air Conditioners
2010
X-Star-ServMan (4-10)
115-Volt: XQ05M10A, XQ06M10A, XQ08M10A, XQ10M10A
Cool Only
115-Volt: EQ08M11A
Cool with Electric Heat
Money
Fan
SetHr.
Stop
Start
Temperature
Fan
Cool
On/
Cooler Warmer
Only Speed Saver
®
Power
TimerOperation

1
Table Of Contents
Important Safety Information .......................................................................................................................................... 2-4
Unit Identication ............................................................................................................................................................... 5
Performance Data ............................................................................................................................................................. 6
Chassis Specications ...................................................................................................................................................... 6
Installation Information/Sleeve Dimensions ...................................................................................................................... 6
Electrical Data ................................................................................................................................................................... 7
Before Operating the Unit ................................................................................................................................................. 8
For Best Cooling Performance and Energy Efciency ...................................................................................................... 8
How to Operate the XQ ..................................................................................................................................................... 9
How to Use the XQ Remote Control ............................................................................................................................... 10
How to Operate the EQ ................................................................................................................................................... 10
Electronic Control Sequence of Operation ...................................................................................................................... 11
Functional Component Denition .................................................................................................................................... 12
Components Testing .................................................................................................................................................. 13-16
Refrigeration Sequence of Operation ............................................................................................................................. 17
R-410A Sealed System Repair Considerations .............................................................................................................. 18
Sealed Refrigeration System Repairs ........................................................................................................................ 19-22
Compressor Checks ................................................................................................................................................... 23-24
Compressor Replacement .......................................................................................................................................... 25-26
Routine Maintenance ................................................................................................................................................. 27-28
Performance Test Data Sheet ......................................................................................................................................... 29
Troubleshooting ......................................................................................................................................................... 30-36
Wiring Diagrams ........................................................................................................................................................ 37-38
Instructions for using Cooling Load Estimate Form ........................................................................................................ 39
Cooling Load Estimate Form ........................................................................................................................................... 40
Heat Load Form ......................................................................................................................................................... 41-42
Warranty .......................................................................................................................................................................... 43
Technical Assistance ....................................................................................................................................................... 44

IMPORTANT SAFETY INFORMATION
The information contained in this manual is intended for use by a qualied service 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.
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.
PERSONAL INJURY OR DEATH HAZARDS
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.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read
and obey all safety messages.
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.
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:
You can be killed or seriously injured if you do not follow instructions.
You can receive minor or moderate injury if you do not follow instructions.
A message to alert you of potential property damage will have the
word “NOTICE”. Potential property damage can occur if instructions
are not followed.
WARNING
CAUTION
NOTICE
2

Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel,•
and sleeve on the room side of the air conditioning unit while cleaning.
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.
Never operate the A/C unit with wet hands.•
Use air conditioner on a single dedicated circuit within the specied amperage rating. •
Use on 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.•
Follow all safety precautions and use proper and adequate protective safety aids such as: gloves,•
goggles, clothing, adequately insulated tools, and testing equipment etc.
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.•
REFRIGERATION SYSTEM HAZARDS:
Use approved standard refrigerant recovering procedures and equipment to relieve pressure before•
opening system for repair.
Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor•
to moderate 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 sure to protect personal and surrounding property with re proof materials.•
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, ushing etc.
Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves,•
safety glasses, clothing etc.
Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.•
MECHANICAL HAZARDS:
Extreme care, proper judgment and all safety procedures must be followed when testing, •
troubleshooting, handling, or working around unit with moving and/or rotating parts.
Be careful when, handling and working around exposed edges and corners of 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.•
3

System Controls
Return Air Grille/Filter
Condenser Fan Blade
Liquid Filter Driers
Compressor
Condenser Coil
Discharge Air
Outdoor Grille
Sleeve
Basepan
Blower Motor
Blower Wheel
Evaporator Coil
Front Cover
PROPERTY DAMAGE HAZARDS
FIRE DAMAGE HAZARDS:
Read the Installation/Operation Manual for this 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.•
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, or not following the above•
Safety Warnings 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 result in damage to the unit and/or minor to serious•
property damage.
4
INTRODUCTION
This service manual is designed to be used in conjunction with the operation and installation manual provided
with each unit.
This service manual was written to assist the professional HVAC service technician to quickly and accurately
diagnose and repair any malfunctions of this product.
This manual, therefore, will deal with all subjects in a general nature. (i.e. All text will pertain to all models).
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.
(See Unit Identication.)

Serial Number
Decade Manufactured
L=0 C=3 F=6 J=9
A=1 D=4 G=7
B=2 E=5 H=8
A K A R 00001
Production Run Number
Year Manufactured
A=1 D=4 G=7 K=0
B=2 E=5 H=8
C=3 F=6 J=9
Product Line
R = RAC
Month Manufactured
A=Jan D=Apr G=Jul K=Oct
B=Feb E=May H=Aug L=Nov
C=Mar F=Jun J=Sept M=Dec
1st Digit – Function
E = Electric Heat
X = Straight Cool
2nd Digit
Q = Q-Star Chassis Size
3rd and 4th Digit - Approximate
BTU/HR in 1000s (Cooling)
Heating BTU/Hr capacity listed in the
Specication/Performance Data Section
8th Digit – Engineering
Major change
7th Digit – Options
0 = Straight Cool
1 = 1 KW Heat Strip, Nominal
6th Digit – Voltage
1 = 115 Volts
5th Digit
Alphabetical Modier
Model Number Code
X Q 08 M 1 0 A
RAC Serial Number Identication Guide
UNIT IDENTIFICATION
5

PERFORMANCE DATA
COOLING
PERFORMANCE DATA*
EVAP. AIR TEMP. DEG. F CONDENSER
TEMPERATURE DEG. F Discharge Temp Suction Temp Super Heat Sub-Cooling
OPERATING PRESSURES ELECTRICAL RATINGS R-410A
REF. Voltage
BREAKER FUSE
Discharge Air Temp.
Drop F. Suction Discharge Amps Cool Amps Heat Locked Rotor Amps
Charge in
OZ. 60 Hertz Amps
Q-Chassis
XQ05M10A 57 23 117 133 60 5 19 157 410 4.5 24.0 27.0 115 15
XQ06M10A 54 26 120 152 63 12 18 150 410 4.9 25.0 21.0 115 15
XQ08M10A 51 29 119 160 63 13 25 138 420 6.3 32.0 25.5 115 15
XQ10M10A 47 33 131 176 59 12 32 132 490 9.8 57.0 24.0 115 15
EQ08M11A 49 31 120 162 60 14 27 133 420 7.0 7.6 32.0 25.5 115 15
*Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp & 40% relative humidity, all systems use R410A.
Installation Information / Sleeve Dimensions
* Minimum extensions when mounted in a window.
** Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation.
Circuit Rating/ Breaker
(B)
(C)
Front
SIDE VIEW
Model
Circuit Rating
Breaker or
T-D Fuse
Plug
Face
(NEMA#)
Power Cord
Length (ft.)
Wall Outlet
Appearance
XQ05M10A, XQ06M10A,
XQ08M10A, XQ10M10A
EQ08M11A
7
125V - 15A 5 - 15P 6
Sleeve Height Width
Depth
with Front
Shell Depth to
Louvers Minimum
Extension
Into Room*
Minimum
Extension
Outside*
Window Width
Thru-the-wall Installation
Finished Hole
Minimum** Maximum Height Width Max. Depth
Q14" 19
¾ "21
3/8
"8 ½" 5 ½" 10 ¾" 22" 42" 14 ¼" 20" 8 ½”
All models use
environmentally
friendly R-410A
refrigerant.
R-410A
As an ENERGY STAR® partner, Friedrich Air Conditioning Co. has determined that the selected ENERGY STAR®() models
meet the ENERGY STAR®
Estimated yearly operating cost based on a 2007 national average electricity cost of 10.65 cents per kWh.
† The estimated yearly operating cost of this model was not available at the time the range was published.
Model
Cooling
Capacity Btu
Heating
Capacity Btu
Volts
Rated
Cooling
Amps
Cooling
Watts
Heating
Amps
Heating
Watts COP
Energy
Ratio
EER
Estimated
Yearly
Operating
Cost
Moisture
Removal
Pints/HR
Room Side
Air
Circulation
CFM Sleeve
Net
Weight
Lbs
XStar ®
XQ05M10A 5500 — 115 4.5 491 — — 11.2 $39 1.0 170 Q 72
XQ06M10A 6000 — 115 4.9 500 — — 12.0 † 1.0 175 Q 72
XQ08M10A 7500 — 115 6.9 701 — — 10.7 $56 1.7 175 Q 71
XQ10M10A 9500 — 115 9.0 970 — — 9.8 $56 2.5 180 Q 71
XStar ®
Electric Heat
EQ08M11A 7500 4000 115 6.3 701 11.2 1290 2.8 10.7 $56 1.9 175 Q 72
Window Mounting Kits
Heat/Cool Models Kit No.
EQ08M11A WIKQ
Friedrich heat/cool models include accessories for
thru-the-wall installation only. Window mounting requires
use of optional accessory kit as listed above.
6

ELECTRICAL DATA
ELECTRIC SHOCK HAZARD
WARNING
Turn off electric power before service or
installation.
All electrical connections and wiring MUST be
installed by a qualied electrician and conform to
the National Electrical Code and all local codes
which have jurisdiction.
Failure to do so can result in personal injury or
death.
Not following the above WARNING could result in re or
electically unsafe conditions which could cause moderate
or serious property damage.
Read, understand and follow the above warning.
NOTICE
FIRE HAZARD
Wire Size Use ONLY wiring size recommended 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.
The consumer - through the AHAM Room Air Conditioner Certication Program - can
be certain that the AHAM Certication Seal accurately states the unit’s cooling and
heating capacity rating, the amperes and the energy efciency ratio.
*HACR: Heating Air Conditioning and Refrigeration
7

ELECTRICAL SHOCK HAZARD
WARNING
Make sure your electrical receptacle has the same
configuration 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
electrical shock, serious injury or death.
Keep the filter clean
Make sure that your air conditioner is always in top performing condition
.ylralugerretlifehtgninaelcyb
Provide good air flow
Make sure the airflow to and from the unit is clear. Your air conditioner puts the
conditioned air out at the top of the unit, and takes in unconditioned air at the
bottom. Airflow is critical to good operation. It is just as important on the outside
.dekcolbtonsiroiretxetinuehtdnuorawolfri
aehttahtgnidliubehtfo
Unit placement
If your air conditioner can be placed in a window or wall that is shaded by a tree
rosepardgnisU.yltneiciffeeromneveetarepolliwtinueht,gnidliubrehtonaro
blinds on the sunny side of the dwelling will also add to your unit’s efficiency.
Insulation
Good insulation will be a big help in maintaining desirable comfort levels.
Doors should have weather stripping. Be sure to caulk around doors and
windows.
Proper installation of schassis eal gasket
Make sure the seal gasket has been installed properly to minimize noise
and improve efficiency. If the sealchassis gasket has not been installed,
please refer to Step 14 of the installation instructions.
Also, if you switch from Cool mode to Fan Only, and switch back to
COOL mode, there is a three minute delay before the compressor comes
back on.
For the best cooling performance and highest energy efficiency
WARNING: Before operating unit
Make sure the wiring is adequate for your unit.
If you have fuses, they should be of the time delay type. Before you install
rekaerbtiucricehtfognitaregarepmaehttahteruseb,tinusihtetacolerro
or time delay fuse does not exceed the amp rating listed in Figure 1.
DO NOT use an extension cord.
The cord provided will carry the proper amount of electrical power to the
.tonlliwdrocnoisnetxena;tinu
Make sure that the receptacle is compatible with
the air conditioner cord plug provided.
This insures proper grounding. If you have a two prong receptacle you
will need to have it replaced with a grounded receptacle by a certified
electrician. The grounded receptacle should meet all national and local
codes and ordinances. Under no circumstances should you remove the
ground prong from the plug. You must use the three prong plug furnished
with the air conditioner.
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 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 2).
3. Press TEST (listen for click; Reset button trips and pops out).
4. Press and release RESET (listen for click; Reset button latches and
remains in). The power supply cord is ready for operation.
NOTE: LCDI device is not intended to be used as a switch.
Once plugged in the unit will operate normally without the need to reset
the LCDI device.
If the device fails to trip when tested or if the power supply cord is
damaged it must be replaced with a new supply cord from the manufac-
turer. We recommend you contact our Technical Assistance Line at
[phone] ext. 845. To expedite service, please have your model
and serial number available.
MODEL
CIRCUIT RATING
OR TIME DELAY
FUSE
REQUIRED WALL
RECEPTACLE
AMP VOLT NEMA
NO.
XQ06 ••XQ08 •XQ10
EQ08
XQ05 15 125 5-15R
Figure 2
Figure 1
WARNING
TEST BEFORE EACH USE
1. PRESS RESET BUTTON
2. PLUG LDCI INTO POWER
RECEPTACLE
3. PRESS TEST BUTTON,
RESET BUTTON SHOULD
POP UP
4. PRESS TEST BUTTON,
FOR USE
DO NOT USE IF ABOVE TEST
FAILS
WHEN GREEN LIGHT IS ON
IT IS WORKING PROPERLY
RESET TEST
NOTE: Your LCDI device will resemble one of these illustrations.
8

To startunit
siti,elcatpecerreporpaotnideggulpdnadellatsnisirenoitidnocriaruoyfI
ready to go.The firsttimethe unit is started, thecompressorwilldelay for three
minutes.See AutomaticComponentProtectiononthe followingpage.
1Touchthe Power button once.The unitwill automaticallybeinCool
mode with the temperature setat75°F (24°C) andthe fanspeed at
F1, thesleep setting.
To setmodeofoperation
When yourstturnthe uniton, it will be in theCool mode (lighton),with
constant fan.
2Touchthe Modebutton once to activatethe MoneySaver®(lighton).
MoneySaver®rosserpmocehthtiwnafehtselcyctahterutaefasi
so that thefan does notrun allthe time.Thissaves energy and
eromrofnaftnatsnocreferpyamuoyrO.noitac
idimuhedsevorpmi
ehthcuot,naftnatsnocotnruterot(tnemevomria Modebutton two
more times).
In order to runthe fanbyitself, do thefollowing:
3Continuing from MoneySaver®mode (light on), touchthe Mode button
once to activate theFANONLYfeature(lighton).
The FANONLYsettingwillcirculate air in the roomwithout thecom-
pressorcomingon.
To adjusttemperature
4Usethe Modebutton to select eitherthe COOL or MoneySaver®
function
5COOLER – Touch the button to lower theroomair temperature.
6WARMER – Touch the button to raisethe roomair temperature.
7Pressboth the and ehthctiwsotemitemasehttasnottub
temperature readoutfrom Fahrenheit(°F)toCelsius(°C).
Repeat step 7 to switch from °C back to °F.
To adjust fan speed
8Touchthe FanSpeed button to seethe currentsetting. Touchitagain
to change speed. F1isthe lowest setting(SLEEPSETTING/LOW),
F2 is MEDIUM,and F3 is HIGH.
To activate SmartFan
9Thereisafourth option,SF, when selectingthe fanspeed.Thisis
the SMARTFAN function.SMART FANDOESNOT OPERATEIN
CONJUCTION WITH THEFAN ONLY MODE.
SmartFan will adjustthe fanspeed automaticallytomaintain the
desiredcomfort level. Forexample,ifthe outsidedoors in your home
are opened foranextended period of time,ormorepeople entera
room,Smart Fanmay adjusttoahigherfan speedtocompensate
forthe increasedheatload. This keepsyou from having to adjustthe
fanspeed on your own.
Howtooperate the Friedrich room airconditioner(XQmodels)
PM
Temp/Hour
Cool
Money Saver
®
Fan Only
Clock
Start Time
Stop Time
Power
Fan
SpeedMode
Timer Set
Hour
10 11 12
13 7
3 4
56
18 9 2 Figure 5
To setthe hour clock
10 Touchthe SetHourbutton to seethe currentsetting (clock light
comeson).The numberthatisdisplayed is the approximatetime
(hour only).Use theandbuttonstochange thesettings.BE
SURETO SETA.M.AND P. M. ACCORDINGLY. (P.M.isindicated
by ared lightinthe upperleftcornerofthe display).
To setthe timer
NOTE:Setthe HOUR CLOCKbefore attempting to settimer functions.
Youcan setthe STARTandSTOP timesaminimumofone hour apart,and
amaximumoftwenty-three hours apart.
11 Aftersetting thetime,press theSet Hour button once (Start light
comeson).Use theandbuttonsto selectthe time that the
unit will START.
12 After selectingthe START time,press theSetHourbutton once more
(Stoplight comeson).Use theandbuttonstoselect the time
that the unitwillSTOP.After selecting the stoppingtime, pressthe
Set Hourbutton once.
13 Pressthe TimerOn/Offbutton (light turnson) to activate thetimer
function. To deactivate this function, press theTimerOn/Offbutton
once again (lightturns off).Oncethe on andoff timeshavebeen
selected,theywillremaininmemoryand cycle dailyuntil changed.
NOTE:If the unitisunplugged or thepower is interrupted,the HOUR
mustbereset or theTimerOn/Offwill notfunctionwhendesired.
Automatic componentprotection
Your unit is equipped with Automatic Component Protection. To protectthe
compressorofthe unit, thereisathree minutestart delayifyou turn the unit
offorifpowerisinterrupted.The fanoperation will notbeaffected. Also,ifyou
switch from Cool mode to Fan Only,and switch back to Cool mode,there
is athree minute delaybeforethe compressor comesbackon.
9
Figure 3
PM
X Star
Temp/Hour
Cool
MoneySaver
®
Fan Only
Clock
Start Time
Stop Time
Power
Fan
SpeedMode
Timer
On/Off Set
Hour
10 11 12
13 7
3 4
56
18 9 2