Service/ Parts Manual Room Air Conditioners Q Chassis Models Kühl 115-Volt: KCQ06A10A, KCQ08A10A, KCQ10A10A, KCQ10A10B Kühl + 115-Volt: KEQ08A11A Electric Heat 1 93001404_02
Table of Contents INTRODUCTION 3 Important Safety Information 3 Personal Injury Or Death Hazards 4 Kühl Control Options 6 Component Identification 7 User Interface 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 11 Electrical Data 12 Circuit Rating/ Breaker/ power cord/ wall Receptacle 12 OPERATION 14 Airflow Direction 14 User Interface 15 Wi-Fi Set Up Instructions 27 Co
INTRODUCTION Important Safety Information The information in this manual is intended for use by a qualified 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.
INTRODUCTION Personal Injury Or Death Hazards WARNING SAFETY FIRST Do not remove, disable or bypass this unit’s safety devices. Doing so may cause fire, Doing so may cause fire, injuries, or death. AVERTISSEMENT Ne pas supprime, désactiver ou contourner cette l´unité des dispositifs de sécurité, faire vous risqueriez de provoquer le feu, les blessures ou la mort. ADVERTENCIA No eliminar, desactivar o pasar por alto los dispositivos de seguridad de la unidad.
INTRODUCTION PERSONAL INJURY OR DEATH HAZARDS 5 • REFRIGERATION SYSTEM REPAIR HAZARDS: • Use approved standard refrigerant recovering procedures and equipment to relieve high 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 flame or hot surfaces can cause serious burns.
INTRODUCTION 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. Pre-Programmed Timer Options: Your unit’s digital control comes equipped with a 24-hour timer.
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.
INTRODUCTION Model Number Reference Guide K C M 21 A 3 0 A - A MODEL TYPE K - KUHL W - WALLMASTER FUNCTION C - COOL ONLY E - ELECTRIC HEAT ENGINEERING REVSION LETTER INDICATES AN ENGINEERING MODIFICATION TO AN EXISTING MODEL MARKETING SUFFIX LETTER INDICATES MODIFICATION TO AN EXISTING MODEL HEAT STRIP 0 - STRAIGHT COOL 1 -1.
INTRODUCTION Serial Number Reference Guide 17 12 M 00001 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 NUMERIC SEQUENCE FIRST UNIT OF EACH MONTH = 00001 FACTORY DESIGNATION M = FRIEDRICH MTY Figure 105 (Serial Number Reference Guide) 9
SPECIFICATIONS Refrigeration Systems Performance Data Model Conden- Discharge Suction sor Temp Temp Temp Deg. F Deg F Deg F R-410A Electrical Ratings REF. LOCKED AMPS AMPS ROTOR CHARGE COOL HEAT AMPS IN OZ Voltage Breaker 60 HERTZ AMPS Kühl® (Cool Only) KCQ06A10A KCQ08A10A 119 116 148 150 55 56 4.8 6.5 25.2 30.5 18.8 15.2 115 115 15 15 KCQ08A10A-A KCQ08A10A-B KCQ08A10A-C KCQ08A10A-E 116 150 56 6.5 30.5 15.
SPECIFICATIONS Installation Sleeve Height Inches Width Inches Q 14 1/4" 19 3/4" Depth Shell with Front Depth Inches to Louvers Inches 21 3/8" 8 1/2" Window Width INCHES In-wall Installation Finished Hole Inches Minimum Extension Into Room* Inches Minimum Extension Outside * Inches Minimum** Maximum Height Width 5 1/2" 10 3/4" 22" 42" 14 1/2" 20" Max.
SPECIFICATIONS Electrical Data WARNING NOTICE ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. FIRE HAZARD All electrical connections and wiring MUST be electically unsafe conditions which could cause moderate or serious property damage. Read, understand and follow the above warning. the National Electrical Code and all local codes which have jurisdiction. Failure to do so can result in personal injury or death.
SPECIFICATIONS Electrical Data WARNING RESET Electrical Shock Hazard 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 death, fire, or electrical shock. TEST WARNING: TEST BEFORE EACH USE! 1. PRESS REST BUTTON. 2.
OPERATION Airflow Direction The airflow 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 airflow positioning. To adjust airflow 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.
OPERATION User Interface All of the control panel function buttons and mode icons can be viewed in Figure 302. 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 efficiency LCD with a built-in backlight.
OPERATION User Interface Accessing Sub-Menus The MENU button accesses the sub-menu. See Figure 10. The arrow buttons navigate the 6 menu options (See Figure 306): – LIM – LOCK – TM – CnCT – F-C – diAG The return button exits the menu. See Figure 305.
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.
OPERATION User Interface The LIM Menu (Limit) This is the limit menu. See Figure 309. Upon entering the menu, the first 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.
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.
OPERATION User Interface The TM Menu (Timer)continued Auto mode selected. See Figure 317. Set the cool setpoint for your first timer period using the arrow buttons. The cooling mode timer only sets the cool setpoint. See Figure 318. Next, set the heat setpoint for your first timer period. The heating mode timer only sets the heat setpoint. See Figure 319. Note: The auto mode timer sets both the cool and heat setpoint. Set the time to start the first timer period. See Figure 320.
OPERATION User Interface The TM Menu (Timer) continued Set the cool setpoint for the second scheduled timer. See Figure 321. Set the heat setpoint for the second timer. Set the time to start the second timer period. See Figure 322. Press the MENU button to complete the time timer setup. See Figure 323.
OPERATION User Interface The F-C Menu (Fahrenheit/ Celsius) This menu is used to toggle between Fahrenheit and Celsius. See Figure 324. Using the arrow buttons on the right side switches it from Fahrenheit to Celsius. See Figures 325 and 326.
OPERATION User Interface The Lock Menu This menu is used to lock the settings with a four(4) digit passcode. This is the Lock Menu. See Figure 327. The menu lock is defaulted to off. Use the arrows to toggle between off and on. See Figure 328. This is LOCK on. See Figure 329. Set the first digit of the password using the arrow buttons. Use the menu button to proceed to the next digit. See Figure 330 Repeat the previous step for the remaining three(3) digits.
OPERATION User Interface The Lock Menu continued The ON on the right side of the display shows the lock function is active. To go back into the menu, select the menu button again. See Figure 331. Enter the password in the same manner it was created. See Figure 332. Entering the correct password will give the user access to all of the sub-menus. See Figure 333. Accessing the lock menu will allow you to toggle lock OFF if needed.
OPERATION User Interface The CnCT (WiFi Connection) Menu This menu is used to turn on Wi-Fi connection. This is the CnCT menu. Pressing the leftmost button will activate Wi-Fi. See Figure 335. To setup WiFi, refer to Wi-Fi setup instructions. The Wi-Fi symbol in the top right corner of the display shows Wi-Fi connection is on. See Figure 336.
OPERATION User Interface The diAG Menu This menu is used to access the diagnostic codes. See Figure 337. Selecting this sub-menu shows the E that represents “Error.” See Figure 338. Toggle through the error codes using the arrow keys. See Figure 339.
OPERATION Wi-Fi Set Up Instructions Below are the set-up instructions for Wi-Fi to use your unit wirelessly. Follow the instructions below: 1. Write down the following information prior to beginning this process (If you do not know this information you can check your router or contact your internet provider) a. WI-FI Network Name (SSID)__________________________ b. WI-FI Network Security Type (Open, wep, wpa, wpa2) _________ c. WI-FI Network Password ___________________________ 2.
OPERATION Wi-Fi SET UP INSTRUCTIONS (Continued) 6. To start the setup process click the menu button on the Control Panel of your Kühl model. NOTE: If the Display is not illuminated, you will need to need click the menu button to illuminate the Display and then click it again to start the setup process. 7. Using the up and down arrows, navigate to the CnCT screen. MENU RETURN Steps 6 and 7 (Get to the CnCT Screen) 8.
OPERATION Wi-Fi SET UP INSTRUCTIONS (Continued) 10. Go to the Wi-Fi settings on your mobile device and connect to “FriedrichConnect_xxxx” network. (xxxx is the network name of the Friedrich unit) Step 10 (Connect WiFi to “Friedrich”) 11. Go back to the Friedrich instructions on your mobile device and click next. Step 11 (Click next) 12. A screen will appear asking you to enter your Wi-Fi credentials. 13. Enter the information as you recorded it at the beginning of the process.
OPERATION Wi-Fi SET UP INSTRUCTIONS (Continued) 14. Click next. NOTE: You will receive a pop up box message stating “Credentials successfully saved. Please connect back to your Wi-Fi network and click “Next”. NOTE: You will receive a message (Waiting for network connection). 15. Go back to the Wi-Fi settings on your mobile device and connect back to your Wi-Fi network. 16. Go back to the Friedrich instructions on your mobile device and click next.
OPERATION Control Panel SYSTEM - The MODE button allows you to sequentially select up to four modes of operation: AUTO Available on select models COOL HEAT Available on select models FAN ONLY AUTO FAN (No Cooling Demand) When in AUTO mode, the fan only operates when the system has a demand to cool or heat the room. In the ON fan mode, the fan operates all the time. The system periodically cools or heats the fan’s airflow but the flow of air does not stop.
OPERATION Remote Control Remote Control - Refer to Figure 340A during operation description. Getting Started - Install two (2) AAA batteries in the battery compartment located on the back of the unit. Operation - The remote control should be within 25 feet of the air conditioner for operation (refer to Figure 340B for effectiveness). Press the power button to turn the remote on. The remote will automatically power off after 15 seconds if the buttons are not being pressed.
Operation Unit Cooling Your air conditioner is designed to cool in warm weather when the outside temperature is above 60 °F (15.6 °C) and below 115 °F (46.1 °C), so it won’t cool a room if it is already cool outside. Condensation is normal Air conditioners actually pump the heat and humidity from your room to the outside. Humidity becomes water, and your air conditioner will use most of the water to keep the outside coil cool.
OPERATION Heat Control Operation - Electric Heat Only (KEQ08A11A) When in the Heat mode, with and without Fan Mode Auto (Fan cycling): If the indoor ambient temperature is below the Heat Demand Threshold (Heat Set Point minus 1.5 ˚F), turn on electric heat. If Ambient is 0.3 ˚F above the Heat Set Point turn off the electric heat. System Mode Auto This mode provides automatic change over between cool and heat. The auto mode runs based on the room ambient temperature vs. the Demand Thresholds.
OPERATION Heating Fan Delay This is only for fan Mode Auto (Fan cycles with cool/heat operation) and not for continuous fan mode. When unit cycles Heating ON – starts the fan 5 seconds EARLY. When unit cycles Heating OFF – DELAYS the fan off for 15 seconds. Fan Speed Change Delay Relay activation is delayed by a minimum number of seconds. The default for this value is 2 seconds and is used to eliminate relay chatter.
OPERATION Refrigeration Sequence Of Operation A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more difficult and time consuming, if not (in some cases) entirely impossible. The refrigeration system uses four basic principles (laws) in its operation they are as follows: 1. “Heat always flows from a warmer body to a cooler body.” 2.
ROUTINE MAINTENANCE REMOVE AND INSTALL THE FRONT COVER WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. Remove the decorative front cover. 1.Remove EntryGard™ screws if installed. 2. Open the decorative front cover door. 3. Locate and disconnect electronic control power cable harness. 4. Remove 4 screws attaching decorative front cover. Save to reinstall later. 5. Remove decorative front cover.
Routine Maintenance Coils & Chassis NOTE: Do not use a caustic cleaning agent on coils or base pan. Use a biodegradable cleaning agent and degreaser. The use of harsh cleaning materials may lead to deterioration of the aluminum fins or the coil end plates. The indoor coil and outdoor coils and base pan should be inspected periodically (annually or semi-annually) and cleaned of all debris (lint, dirt, leaves, paper, etc.) as necessary. Under extreme conditions, more frequent cleaning may be required.
ROUTINE MAINTENANCE Filter Removal / Installation Instructions 1. Swing the door open, See Figure 402,and remove the filter by grasping the filter grips and pulling the bottom towards you. . See Figure 403. 2. Clean the front frame by removing the carbon filter (if installed) and washing the dirt from the filter. Use a mild soap solution if necessary. Allow filter to dry. NOTE: 3. 4. The carbon filter is not a reusable filter, and needs to be replaced every three months for optimum efficiency.
REMOVE AND INSTALL THE CHASSIS REMOVE AND INSTALL THE CHASSIS WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. Remove the chassis 1. Remove the EntryGard™ Screws. (Refer to Figure 501) 2. Hold the cabinet stationary then carefully slide the unit out of the sleeve. Make sure to fully support the unit. (Refer to Figure 502) Install the Chassis 1. Carefully team lift the chassis and set it into the cabinet.
R-410A SEALED SYSTEM REPAIR WARNING Refrigeration system under high pressure The following is a list of important considerations when working with R-410A equipment 1. R-410A pressure is approximately 60% higher than R-22 pressure. 2. R-410A cylinders must not be allowed to exceed 125 F, they may O leak or rupture. service this equipment. 3. R-410A must never be pressurized with a mixture of air, it may R410A systems operate at higher pressures than R22 equipment.
R-410A SEALED SYSTEM REPAIRS WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants. Failure to follow these procedures could result in serious injury or death. WARNING RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service.
R-410A SEALED SYSTEM REPAIRS WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Whenever you service a unit with an undercharge of refrigerant, always suspect a leak. The leak must be repaired before charging the unit. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants.
R-410A SEALED SYSTEM REPAIRS WARNING Overcharged Refrigerant Systems Compressor amps will be near normal or higher. Noncondensables can also cause these symptoms. To confirm, remove some of the charge, if conditions improve, system may be overcharged. If conditions don’t improve, Noncondensables are indicated. RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service.
R-410A SEALED SYSTEM REPAIRS Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions. A partial restriction allows some of the refrigerant to circulate through the system. With a complete restriction there is no circulation of refrigerant in the system.
R-410A SEALED SYSTEM REPAIRS Sealed System Method of Charging/ Repairs WARNING CAUTION BURN HAZARD Proper safety procedures must be followed, and proper protective clothing must be worn when working with a torch. FREEZE HAZARD Proper safety procedures must be followed, and proper protective clothing must be worn when working with liquid refrigerant. Failure to follow these procedures could result in moderate or serious injury.
COMPONENT TESTING Compressor Checks WARNING ELECTRIC SHOCK HAZARD Turn off electric power before installation. WARNING service or 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. BURN HAZARD Proper safety procedures must be followed, and proper protective clothing must be worn when working with a torch.
COMPRESSOR CHECKS WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants.
COMPONENT TESTING Compressor Replacement WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. 2. Recover all refrigerant from the system thoughthe process tubes.
COMPONENT TESTING Compressor Replacement -Special Procedure in Case of Compressor Burnout WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants. Failure to follow these procedures could result in serious injury or death. 1. Recover all refrigerant and oil from the system. 2.
COMPONENTS TESTING Fan Motor A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A selfresetting overload is located inside the motor to protect against high temperature and high amperage conditions. WARNING Figure 23 Blower/Fan Motor ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied.
COMPONENTS TESTING Heating Element WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Heating Element Example Failure to do so could result in serious injury or death. Figure 704 (Heating Element) Electric heat models are equipped with a heating element The KEQ08A11A Model is equipped with a 1.15 kw(@115 Volts) Heating Element.
COMPONENTS TESTING WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. Testing the User Interface and Electronic Control Board If the User Interface does not turn on: 1. Make sure the unit has the proper voltage and that it is turned on. Check power at Terminals L1 and L2.
COMPONENTS TESTING Thermistor Resistence Values (This Table Applies to All Thermistors) TEMP F -25 RESISTENCE (K Ohms) -20 -15 -10 -5 0 5 10 15 20 25 30 31 32 33 34 35 36 37 38 39 40 45 50 55 60 65 66 67 68 69 70 71 72 73 74 75 76 MIN 210.889 178.952 151.591 128.434 108.886 92.411 78.541 66.866 57.039 48.763 41.786 35.896 34.832 33.803 32.808 31.846 30.916 30.016 29.144 28.319 27.486 26.697 23.116 20.071 17.474 15.253 13.351 13.004 12.668 12.341 12.024 11.716 11.418 11.128 10.846 10.574 10.308 10.
COMPONENTS TESTING Electronic Control Board Identification USER INTERFACE AMB TEMP SENSOR ID COIL TEMP SENSOR OD COIL TEMP SENSOR DISCH AIR TEMP SENSOR HIGH PRESSURE SWITCH/JUMPER HPS LOW SPEED FAN Reversing Valve Relay FAN 1 RELAY L2 / RV2 L2 / RV2 FAN 2 RELAY MED SPEED FAN HIGH SPEED FAN RV1 HEATER RELAY FAN 3 RELAY N/L2 FAN 4 RELAY MAX SPEED FAN COOLING ONLY MODELS IF INSTALLED ON MODELS WITH HEAT THIS IS A POWER RELAY L2 HEATER POWER L1 HEATER POWER COMP RELAY HEATER RELAY N / L2 L1 (
COMPONENT TESTING Replace the Electronic Control Board WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. 1. Unplug the unit 2. Remove the Front Cover (refer to Routine Maintenance, Figure 401) 3. Remove the unit from the sleeve.(Refer to Figure 502) 4.
TROUBLESHOOTING ROOM AIR CONDITIONER UNIT PERFORMANCE TEST DATA SHEET JOB NAME______________________ TECH’S NAME_________________________ DATE___________ MODEL#_______________ SERIAL #______________________ CHECK THE INSTALLATION ACCEPTABLE NOT ACCEPTABLE YES NO IS A CHASIS GASKET INSTALLED? _____ ____ IS THE FRESH / EXHAUST AIR VENT OPEN? _____ ____ IS A FRIEDRICH SLEEVE INSTALLED? _____ ____ IS A FRIEDRICH OUTDOOR GRILLE INSTALLED? _____ ____ IS MAINTENANCE BEING PERFORMED? ____
TROUBLESHOOTING Diagnostic Codes FAULT CODE PROBLEM CONTROL BOARD'S ACTION 1 Front Panel Button Stuck For More Than 20 Seconds Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch input. ENSURE FRONT COVER DOES NOT DEPRESS BUTTONS 3 Indoor Temperature Sensor is Open or Shorted Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to operate 4 Indoor Coil Temperature Sensor is Open or Shorted Control Board sets temp to a default of 40°F. Override sensor.
TROUBLESHOOTING Problem Unit does not operate. Unit Trips Circuit Breaker or Blows Fuses. LCDI Power Cord Trips (Reset Button Pops Out). Possible Cause The power button is off or the set point temperature is satisfied. Push the power button on and raise or lower temperature setting (as appropriate) to call for operation. The LCDI power cord is unplugged. Plug into a properly grounded 3 prong receptacle. (See Electrical Rating Tables, Figure 205) for the proper receptacle type for your unit.
TROUBLESHOOTING Tips Continued COMPLAINT Unit Does Not Cool/ Heat Room Sufficiently, or Cycles On And Off Too Frequently (continued). CAUSE Operating in Cooling mode while the outside temperature is below 60 °F (16 °C). Do not try to operate your air conditioner in the cooling mode when the outside temperature is below 60 °F (16 °C). The unit will not cool properly, and the unit may be damaged. The digital control is set to fan cycling mode.
TROUBLESHOOTING Tips Continued COMPLAINT Fan motor does not run.
TROUBLESHOOTING Tips Continued COMPLAINT Electronic control board does not turn unit off Compressor runs for short periods only.
TROUBLESHOOTING Tips Continued COMPLAINT Water “spitting” into room Excessive moisture Unit short cycles Prolonged off cycles Outside water leaks Room temperature uneven (Heating cycle) CAUSE SOLUTION Sublimation: When unconditioned saturated, outside air mixes with conditioned air, condensation forms on the cooler surfaces Ensure that foam gaskets are installed in between window panes & in between the unit & the sleeve.
AIR CONDITIONERS: TROUBLE SHOOTING TIPS REFRIGERANT SYSTEM DIAGNOSIS – COOLING CYCLE LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Load Condi�ons High Load Conditions Low Load Condi�ons High Load Conditions Low Air Flow Across Indoor Coil High Air Flow Across Indoor Coil Refrigerant System Restriction Low Airflow Across Outdoor Coil Refrigerant System Restriction Reversing Valve not Fully Seated Reversing Valve not Fully Seated Overcharged Undercharged O
DISHCHARGE AIR NOTE: COMPRESSOR TERMINAL ORIENTATION MAY VARY. REFER TO MARKINGS ON COMPRESSOR.
BLUE WHITE BLACK AMBIENT AIR DISHCHARGE AIR YELLOW INDOOR COIL OUTDOOR COIL Color SENSORS Table 1 HARNESS COMPR WIRE COMPRESSOR -F- S -F- -F- BLUE RED RED BLACK R C BLACK c WHITE BROWN WHITE RED BLUE BLACK BLACK BLUE RED HPS DISCH AIR TEMP SENSOR OD COIL TEMP SENSOR ID COIL TEMP SENSOR AMB TEMP SENSOR FOR SENSOR CONNECTIONS SEE TABLE 1 FOR COLOR CODE PIN CONNECTIONS H ER M BLUE OLP JUMPER IF REQ'D COMPRESSOR WIRING NOTE: COMPRESSOR COMMON-START- RUN TERMINAL POSITION
PARTS CATALOG Introduction This illustrated part catalog has been written to help assist the technician to quickly locate the parts that he or she needs to make a repair. The catalog is broken down into different figures which represent different modules of the air conditioning unit. For example; the chassis, refrigeration system, blower system, or electrical controls. Each figure contains an illustration(s) containing item numbers and a corresponding item list.
PARTS CATALOG A 30 5 10 15 20 25 45 50 35 Detail A FIgure 901 (Exterior Parts) 68 40
PARTS CATALOG FIGURE 901 ITEM PART NUMBER PART DESCRIPTION USED ON MODEL 5 62400701 ASSY FRNT PLSTC Q ALL 1 10 62400715 ASSY DOOR Q ALL 1 15 62400122 PIN HINGE DOOR ALL 2 20 62400726 ASSY FILTER MESH Q ALL 1 25 62400144 ASSY FILTER CARBON SQ ALL 1 30 61625815 ASSY SHELL S/W SQ VENTED 2015 ALL 1 35 62601080 RAC GEN IV - REMOTE CONTROL UNIT ALL 1 40 61818523 EXPANDED METAL GRILLE PAINTED KUHLQ ALL 1 45 60169120 SCRIPT FRIEDRICH 2010 "FESTOON" ALL 1 50 91002900
PARTS CATALOG CONDENSER COIL (5) AND CAP TUBE ASSY KIT (45)MAY VARY BY MODEL SUB-REVISION VERIFY THE ENTIRE MODEL NUMBER AS SHOWN ON NAMEPLATE BEFORE ORDERING THE PART 10 15 65 5 20 50 55 45 60 35 25 30 FIgure 902 (Refrigeration) 70 40
PARTS CATALOG ITEM 71 PART NUMBER FIGURE 902 PART DESCRIPTION USED ON MODEL QTY 5 61850204 CONDENSOR COIL QCS5MMX4X16RC9X39A15H2 KCQ06A10A, KCQ08A10A, KEQ08A11A KCQ06A10A-A KCQ0610A-B, KCQ06A10A-C KCQ08A10A-A, KCQ08A10A-B, KCQ08A10A-C KEQ08A11A-A, KEQ08A11A-B, KEQ08A11A-C 1 5 61850268 CONDENSOR COIL KCQ06A10A-D KCQ08A10A-D, KCQ08A10A-E, KCQ0810A-F KEQ08A11A-D, KEQ08A11A-E, KEQ0811A-F 1 5 61850206 CONDENSOR COIL QCS5MMX4X16RC9X39A15H2 KCQ10A10A 1 5 61600529 CONDENSOR COIL 1/4 KCQ10A1
PARTS CATALOG ITEM PART NUMBER PART DESCRIPTION USED ON MODEL QTY 45 67000207 "CAP TUBE ASSY KIT (INCLUDES CAP TUBE ASSY (PN 61922919), STRAINER, AND STRAINER HOLDER) USED WITH CONDENSOR COIL 61600529" KCQ10A10B-A, KCQ10A10B-B, KCQ10A10B-C 1 45 67000203 CAP TUBE ASSY KIT (INCLUDES CAP TUBE ASSY (PN 61922925), STRAINER, AND STRAINER HOLDER USED WITH CONDENSOR COIL 61850269 KCQ10A10B-D 1 50 61834800 STRAINER .
PARTS CATALOG 60 105 100 75 50 80 95 60 90 40 100 10 15 5 65 JHUI 55 45 20 FIgure 903 (Blower Module) 73 70
PARTS CATALOG FIGURE 903 ITEM 5 PART NUMBER 67000204 PART DESCRIPTION USED ON MODEL USER INTERFACE KIT (INCLUDES FRONT PANEL ASSY (PN 62606000 - REPLACES 62603000) AND U/I CABLE (PN 62603096) ALL 1 10 67000181 ELECTRONIC CONTROL BOARD KIT RAC MASTER POWER/RELAY MODULE SMPS - 3SP/COOL (PN 62603074) PIN, CIRCUIT BOARD 4 EA (PN 61600527 KCQ06A10A, KCQ08A10A, KCQ10A10A, KCQ10A10B 1 10 67000178 ELECTRONIC CONTROL BOARD KIT RAC MASTER POWER/RELAY MODULE SMPS - 3SP/COOL/EH (PN 62603071) PIN, CIRCUIT
PARTS CATALOG FIGURE 903 ITEM PART NUMBER PART DESCRIPTION USED ON MODEL 75 61990500 DECK, EVAP Q CHASSIS KCQ06A10A, KCQ08A10A, KCQ10A10A, KCQ10A10B 1 75 61619405 DECK (EQ08) KEQ08A11A 1 80 61597317 INNERWALL XQ KCQ06A10A, KCQ08A10A, KCQ10A10A, KCQ10A10B 1 80 61597318 INNERWALL EQ KEQ08A11A 1 -85 60217902 SEAL FAN MTR TO INNER WALL ALL 1 90 61871515 “MTR 1/10 1 4P CCW 2 ECM (FUSED) INTERCHANGEABLE WITH 61871519 (OVERLOAD AUTO RESET)” KEQ08A11A, KCQ08A10A, KCQ10A10A, KCQ10A10B
AVAILABLE ACCESSORIES Premium Carbon Filters Remove odors and VOCs (volatile organic compounds). Achieve up to a MERV 6 rating when used with standard filter. 3 pack Model Kit No. KCQ and KEQ KWCFQ Drain Kit Allows field installed drain tube to be installed to the bottom of the sleeve to route the condensate from the unit. Model All Kühl Series Models Window Mounting Kits: Kühl+ Window kits are included with cooling only models, but are an accessory item for Kühl+ heat/cool models.
Friedrich Air Conditioning Company 10001 Reunion Place, Suite 500 San Antonio, TX 78216 800-541-6645 www.friedrich.com KUHL® ROOM AIR CONDITIONERS LIMITED WARRANTY FIRST YEAR ANY PART: If any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from date of original purchase, FRIEDRICH will repair the product at no charge, provided room air conditioner is reasonably accessible for service.
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CUSTOMER SATISFACTION and QUALITY ASSURANCE Friedrich is a conscientious manufacturer, concerned about customer satisfaction, product quality, and controlling warranty costs. As an Authorized Service Provider you play a vital role in these areas. By adhering to the policies and procedures you provide us with vital information on each warranty repair you complete.
