Friedrich Wallmaster WET10A33A Service & Parts Manual
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Friedrich Wallmaster WET10A33A Service & Parts Manual

Thru - the wall air conditioners
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Thru - the Wall Air
Conditioners
Wallmaster Models
Cool Only
Electric Heat
Heat Pump
1
93001405_02
115-Volt:
WCT08A10A, WCT10A10A, WCT12A10A, WCT12A10B
230-Volt:
WCT10A30A, WCT12A30A, WCT16A30A
230-Volt:
WET10A33A, WET12A33A, WET16A33A
230-Volt:
WHT12A33A
PTAC Direct Sales, Inc. 185
S. Kimball Ave. Suite 130
Southlake, TX 76092
877.454.7822 (T)

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Summary of Contents for Friedrich Wallmaster WET10A33A

  • Page 1 PTAC Direct Sales, Inc. 185 S. Kimball Ave. Suite 130 Southlake, TX 76092 877.454.7822 (T) Thru - the Wall Air Conditioners Wallmaster Models Cool Only 115-Volt: WCT08A10A, WCT10A10A, WCT12A10A, WCT12A10B 230-Volt: WCT10A30A, WCT12A30A, WCT16A30A Electric Heat 230-Volt: WET10A33A, WET12A33A, WET16A33A 230-Volt: Heat Pump WHT12A33A...

  • Page 2: Table Of Contents

    Table of Contents INTRODUCTION Important Safety Information Personal Injury Or Death Hazards New Wallmaster Control Options Model and Serial Number Location Model Number Reference Guide Serial Number Reference Guide SPECIFICATIONS Refrigeration Systems Performance Data Electrical Data Circuit Rating/ Breaker/ power cord/ wall Receptacle OPERATION Airflow Adjustment User Interface...

  • Page 3: Introduction

    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.

  • Page 4: Personal Injury Or Death Hazards

    INTRODUCTION Personal Injury Or Death Hazards WARNING AVERTISSEMENT ADVERTENCIA Do not remove, disable or Ne pas supprime, désactiver ou No eliminar, desactivar o pasar SAFETY bypass this unit’s safety contourner cette l´unité des por alto los dispositivos de devices. Doing so may cause dispositifs de sécurité, faire vous seguridad de la unidad.
  • Page 5 INTRODUCTION PERSONAL INJURY OR DEATH HAZARDS • 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.

  • Page 6: New Wallmaster Control Options

    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. www.friedrich.com for complete details on Friedrich Connect.

  • Page 7: Model And Serial Number Location

    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 Model and Serial Number Information...

  • Page 8: Model Number Reference Guide

    INTRODUCTION Model Number Reference Guide K C M 21 A 3 0 A - A ENGINEERING REVSION LETTER INDICATES AN ENGINEERING MODIFI- CATION TO AN EXISTING MODEL TYPE MODEL K - KUHL W - WALLMASTER MARKETING SUFFIX LETTER INDICATES MODIFICATION TO FUNCTION AN EXISTING MODEL C - COOL ONLY...

  • Page 9: Serial Number Reference Guide

    19 = 2019 20 = 2020 21 = 2021 22 = 2022 MONTH OF MANUFACTURE 01 = JANUARY FACTORY DESIGNATION 02 = FEBRUARY M = FRIEDRICH MTY 03 = MARCH 04 = APRIL 05 = MAY 06 = JUNE 07 = JULY...

  • Page 10: Specifications

    SPECIFICATIONS Refrigeration Systems Performance Data R-410A Electrical Ratings REF. Breaker Condensor Discharge Suction LOCKED Temp Temp Temp AMPS AMPS ROTOR CHARGE HERTZ Model Deg F. Deg. F Deg F COOL HEAT AMPS IN OZ Voltage AMPS Cool Only WCT08A10A 30.5 23.5 WCT10A10A 26.6...
  • Page 11 SPECIFICATIONS Moisture Cooling Heating Cooling Cooling Heating Heating Removal- Model Volts Amps Watts Amps Watts CEER Pints/HR CFM Cooling Only WCT08A10A 8000 — — — 10.7 10.6 — 724587436655 WCT10A10A 10000 — — — 10.7 10.6 — 724587436662 WCT12A10A 12000 —...

  • Page 12: Electrical Data

    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 the National Electrical Code and all local codes or serious property damage.
  • Page 13 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.

  • Page 14: Operation

    OPERATION Airflow Adjustment 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 left or right, 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.

  • Page 15: User Interface

    OPERATION User Interface All of the control panel function buttons and mode icons can be viewed in Figures 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.
  • Page 16 OPERATION User Interface Accessing Sub-Menus The MENU button accesses the sub-menu. See Figure 10. Press the Menu Button to enter the Menu. See Figure 303. The arrow buttons navigate the 6 menu options. See Figure 304. – LIM – LOCK –...
  • Page 17 OPERATION User Interface Navigating Inside the Sub-Menus The MENU button moves you forward through the sub-menu. See Figure 306. The return button moves you backward once inside the LIM, TM, F-C, LOCK, CnCt, and diag menus. See Figure 306. MENU RETURN Figure 306 (Menu and Return Buttons)
  • Page 18 OPERATION User Interface The LIM Menu (LIMIT) This is the limit menu. See Figure 307. Upon entering the menu, the first option will be to set the lower setpoint limit using the arrow buttons. See Figure 308. Then you can set the higher setpoint limit using the arrow buttons. See Figure 309. Pressing the menu button completes the limit setting.
  • Page 19 OPERATION User Interface The TM Menu (Timer) This is the TM menu used to set a timer. See Figure 310. In the menu, you set the current time using the arrow buttons. See Figure 311. (Note: These two “set clock” steps will be skipped if the unit is already connected to Wi-Fi.) First, set the hour.
  • Page 20 OPERATION User Interface The TM Menu (Timer) continued Auto mode selected. See Figure 313. Set the cool setpoint for your first timer period using the arrow buttons. The cooling mode timer only sets the cool setpoint. See Figure 314. Next, set the heat setpoint for your first timer period. The heating mode timer only sets the heat setpoint. See Figure 315. Note: The auto mode timer sets both the cool and heat setpoint.
  • Page 21 OPERATION User Interface The TM Menu (Timer) continued Set the cool setpoint for the second scheduled timer. See Figure 317. Set the heat setpoint for the second timer. Set the time to start the second timer period. See Figure 318. Press the MENU button to complete the time timer setup.
  • Page 22 OPERATION User Interface The F-C Menu (Fahrenheit/ Celsius) This menu is used to toggle between Fahrenheit and Celsius. See Figure 319. Using the arrow buttons on the right side switches it from Fahrenheit to Celsius. See Figures 320 and 321. Figure 319 MENU RETURN Figure 320...
  • Page 23 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 322. The menu lock is defaulted to off. Use the arrows to toggle between off and on. See Figure 323. This is LOCK on.
  • Page 24 OPERATION User Interface The Lock Menu continued The ON on the right side of the display shows the lock function is active. See Figure 326. To go back into the menu, select the menu button again. See Figure 306. Enter the password in the same manner it was created. See Figure 327. Entering the correct password will give the user access to all of the sub-menus.
  • Page 25 OPERATION User Interface The diAG Menu This menu is used to access the diagnostic codes. See Figure 330. Selecting this sub-menu shows the E that represents “Error.” See Figure 331. Toggle through the error codes using the arrow keys. See Figure 332. Figure 330 MENU RETURN Figure 331...
  • Page 26 OPERATION User Interface The CnCT Menu (WiFi Connection) This menu is used to turn on Wi-Fi connection. This is the CnCT menu. See Figure 333 Pressing the menu button will activate Wi-Fi. See Figure 306. 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.

  • Page 27: Wi-Fi Set Up Instructions

    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) __________________________ WI-FI Network Name (SSID)
  • Page 28 MENU RETURN 8. Click the menu button (see figure307) , this will begin the setup process for your Friedrich Connect enabled device. NOTE: When the setup process starts, the WI-FI symbol will begin to flash. This indicates the A/C unit is trying to connect to your Wi-Fi network NOTE: Once the setup process has been started, you will have five minutes to complete the setup.
  • Page 29 “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.
  • Page 30 FriedrichConnect account. NOTE: It will connect to the Friedrich unit before the 3 minute mark in most cases however it may take up 3 minutes to be connected. Once it is connected you will receive a successfully connected box.

  • Page 31: Control Panel

    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.

  • Page 32: Remote Control

    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.

  • Page 33: Unit

    Noises All air conditioners make some noise. Friedrich units are designed to operate as quietly as possible. An air conditioner mounted in a wall is quieter than one mounted in a window. It is important to ensure that the chassis seal gasket is properly installed.
  • Page 34 OPERATION Unit Cooling Mode Once the ambient temperature rises past the cool demand threshold (Cool Set Point + 1.5 ˚F) (see figure below), and the compressor is not locked out, the cooling cycle begins. As shown in the figure below, the fan is started 5 seconds prior to the compressor.
  • Page 35 OPERATION Unit Heat Control Operation - HeatPump With Electric Heat This heating is more complex due to the possibility of two heating methods. If the ambient indoor temperature is be-low the heat demand threshold (1.5˚F below the heat set point temperature), and the compressor is not locked out, turn on compressor.

  • Page 36: Indoor Ambient Temperature

    OPERATION Unit Heat Control Operation - Heat Pump With Electric Heat (Continued) Automatic Emergency Heat If the sealed system fails with a bad reversing valve or anything that causes the indoor coil to get colder than the indoor ambient temperature: 1) If the indoor coil thermistor senses a 5 degree temperature drop as compared to the ambient temperature thermistor and this lasts up to 5 minutes, the control board will switch the unit to electric heat and continue heating with it.
  • Page 37 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.

  • Page 38: Refrigeration Sequence Of Operation

    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.

  • Page 39: Routine Maintenance

    ROUTINE MAINTENANCE Remove And Install The Front Cover and Filter 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 the FRONT PANEL. Using the handles, pull panel out until it is released from the two retaining snaps. Place the cover aside carefully.
  • Page 40 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.

  • Page 41: Remove And Install The Chassis

    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. 1. Remove the front grill. See Routine Maintenance Figure 401. 2.

  • Page 42: R-410A Sealed System Repair

    11. Introduce liquid refrigerant charge into the high side of the system. 12. For low side pressure charging of R-410A, use a charging adaptor. 13. Use Friedrich approved R-410A filter dryers only. IMPORTANT SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER.

  • Page 43: Refrigerant Charging

    R-410A SEALED SYSTEM REPAIRS WARNING RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service. Failure to do so could result in electric shock, serious injury or death. WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure.

  • Page 44: Undercharged Refrigerant Systems

    R-410A SEALED SYSTEM REPAIRS Undercharged Refrigerant Systems An undercharged system will result in poor WARNING performance (low pressures, etc.) in both the heating and cooling cycle. RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections, Whenever you service a unit with an undercharge of maintenances or service.

  • Page 45: Overcharged Refrigerant Systems

    R-410A SEALED SYSTEM REPAIRS Overcharged Refrigerant Systems WARNING Compressor amps will be near normal or higher. Noncondensables can also cause these symptoms. RISK OF ELECTRIC SHOCK To confirm, remove some of the charge, if conditions Unplug and/or disconnect all electrical power improve, system may be overcharged.

  • Page 46: Restricted Refrigerant System

    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.

  • Page 47: Sealed System Method Of Charging/ Repairs

    R-410A SEALED SYSTEM REPAIRS Sealed System Method of Charging/ Repairs CAUTION WARNING FREEZE HAZARD BURN HAZARD Proper safety procedures must be followed, Proper safety procedures must be followed, and proper protective clothing must be worn and proper protective clothing must be worn when working with liquid refrigerant.

  • Page 48: Component Testing

    COMPONENT TESTING Hermetic Components Check WARNING WARNING BURN HAZARD CUT/SEVER HAZARD Proper safety procedures must be followed, Be careful with the sharp edges and corners. and proper protective clothing must be worn when working with a torch. Wear protective clothing and gloves, etc. Failure to follow these procedures could Failure to do so could result in serious injury.

  • Page 49: Reversing Valve Description And Operation

    COMPONENT TESTING Reversing Valve Description And Operation The Reversing Valve controls the direction of refrigerant flow to the indoor and outdoor coils. It consists of a pressure-operated, main valve and a pilot valve actuated by a solenoid plunger. The solenoid is energized during the heating cycle only.

  • Page 50: Testing The Reversing Valve Solenoid Coil

    COMPONENT TESTING Testing The Reversing Valve Solenoid Coil WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle.

  • Page 51: Checking The Reversing Valve

    COMPONENT TESTING Checking The Reversing Valve 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.

  • Page 52: Replace The Reversing Valve

    COMPONENT TESTING Replace The Reversing Valve WARNING NOTICE FIRE HAZARD HIGH PRESSURE HAZARD The use of a torch requires extreme care and proper Sealed Refrigeration System contains refrigerant judgment. Follow all safety recommended precautions and and oil under high pressure. Proper safety procedures must be followed, notice could result in moderate to serious property damage.

  • Page 53: Touch Test Chart : To Service Reversing Valves

    COMPONENT TESTING Touch Test Chart : To Service Reversing Valves NORMAL FUNCTION OF VALVE NOTES: VALVE OPERATING * TEMPERATURE OF VALVE BODY CONDITION ** WARMER THAN VALVE BODY POSSIBLE CAUSES CORRECTIONS Cool Normal Cooling Cool *TVB as (2) as (1) Cool Normal Heating Cool...

  • Page 54: Compressor Checks

    COMPONENT TESTING Compressor Checks WARNING WARNING ELECTRIC SHOCK HAZARD BURN HAZARD Turn off electric power before service or installation. Proper safety procedures must be followed, All electrical connections and wiring MUST be and proper protective clothing must be worn when working with a torch. the National Electrical Code and all local codes which have jurisdiction.
  • Page 55 COMPRESSOR CHECKS WARNING WARNING HIGH PRESSURE HAZARD ELECTRIC SHOCK HAZARD Sealed Refrigeration System contains refrigerant Turn off electric power before service or and oil under high pressure. installation. Extreme care must be used, if it Proper safety procedures must be followed, becomes necessary to work on equipment with and proper protective clothing must be worn power applied.

  • Page 56: Compressor Replacement

    COMPONENT TESTING Compressor Replacement 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. WARNING 2. Recover all refrigerant from the system though the process tubes. PROPER HANDLING OF RECOVERED REFRIGERANT ELECTRIC SHOCK HAZARD ACCORDING TO EPA REGULATIONS IS REQUIRED.
  • Page 57 COMPONENT TESTING Compressor Replacement -Special Procedure in Case of Compressor Burnout 1. Recover all refrigerant and oil from the system. 2. Remove compressor, capillary tube and filter drier from the system. 3. Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent.

  • Page 58: Fan Motor

    COMPONENTS TESTING Fan Motor A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A self-resetting overload is located inside the motor to protect against high temperature and high amperage conditions. (See Figure 23) Figure 23 WARNING Blower/Fan Motor...

  • Page 59: Heating Element

    COMPONENTS TESTING Heating Element WARNING Heating Element Example 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.

  • Page 60: Testing The User Interface And Electronic Control Board

    COMPONENTS TESTING Testing the User Interface and Electronic WARNING Control Board ELECTRIC SHOCK HAZARD If the User Interface does not turn on: Turn off electric power before service or 1. Make sure the unit has the proper voltage and that it is installation.
  • Page 61 COMPONENTS TESTING Thermistor Resistence Values (This Table Applies to All Thermistors) RESISTANCE TEMP RESISTENCE (K Ohms) TOLERANCE % CENTR 210.889 225.548 240.224 6.50 6.51 178.952 190.889 202.825 6.25 6.25 151.591 161.325 171.059 6.03 6.03 128.434 136.363 144.292 5.81 5.81 108.886 115.340 121.794 5.60...

  • Page 62: Electronic Control Board Identification

    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 Reversing L2 / RV2 Valve Relay FAN 1 LOW SPEED RELAY L2 / RV2 FAN 2 RELAY HEATER...

  • Page 63: Replace The Electronic Control Board

    COMPONENT TESTING Replace the Electronic Control Board 1. Unplug the unit WARNING 2. Remove the Front Cover. Refer to Routine Maintenance, Figure 401. ELECTRIC SHOCK HAZARD 3. Slide the unit out approximately 3 inches Turn off electric power before service or installation.

  • Page 64: Troubleshooting

    IS THE FRESH / EXHAUST AIR VENT OPEN? _____ ____ AREA TO BE APPROXIMATE IS A FRIEDRICH SLEEVE INSTALLED? _____ ____ CONDITIONED COOLING BTU IS A FRIEDRICH OUTDOOR GRILLE INSTALLED? _____ ____ IN SQ. FT. REQUIRED IS MAINTENANCE BEING PERFORMED? _____ ____ 100 - 150 5000...

  • Page 65: Diagnostic Codes

    TROUBLESHOOTING Diagnostic Codes DIAG PROBLEM CONTROL BOARD'S ACTION CODE Front Panel Button Stuck For More Continue to monitor for "OPEN" (Unstuck) switch. Do not process Than 20 Seconds switch input. ENSURE FRONT COVER DOES NOT DEPRESS BUTTONS Indoor Temperature Sensor is Open Set temp to 75°F in COOLING or 68°F in HEATING.

  • Page 66: Troubleshooting Tips

    TROUBLESHOOTING Troubleshooting Tips Problem Possible Cause Possible Solution Push the power button on and raise or lower The power button is off or the set point temperature setting (as appropriate) to call for temperature is satisfied. operation. Plug into a properly grounded 3 prong recep- The LCDI power cord is unplugged.
  • Page 67 TROUBLESHOOTING Tips continued COMPLAINT CAUSE SOLUTION Do not try to operate your air conditioner in the Operating in Cooling mode while the cooling mode when the outside temperature is outside temperature is below 60 °F below 60 °F (16 °C). The unit will not cool prop- (16 °C).
  • Page 68 TROUBLESHOOTING Tips continued COMPLAINT CAUSE SOLUTION Test button & replace user interface if inopera- Inoperative system button tive Broken, loose or incorrect wiring Refer to applicable wiring diagram Fan motor does not run. Open capacitor Test capacitor & replace if inoperative Fan speed button defective Replace user interface if inoperative Test fan motor &...
  • Page 69 TROUBLESHOOTING Tips continued COMPLAINT CAUSE SOLUTION Compressor relay contacts stuck Replace electronic control board Incorrect wiring Refer to appropriate wiring diagrams Electronic control board does not turn unit off Unit undersized for area to be cooled Refer to industry standard sizing chart Defective thermistor Replace thermistor or electronic control board Incorrect wiring...
  • Page 70 TROUBLESHOOTING Tips continued COMPLAINT CAUSE SOLUTION Ensure that foam gaskets are installed in Sublimation: between window panes & in between the unit & When unconditioned saturated, outside the sleeve. Also, ensure that fresh air mixes with conditioned air, conden- air/exhaust vents (on applicable models) are in sation forms on the cooler surfaces the closed position &...
  • Page 71 TROUBLESHOOTING Cool with Heat Units COMPLAINT CAUSE SOLUTION Check diagnostic codes. Check Thermistors. Bad indoor ambient thermistor Room temperature uneven Replace as needed. (Heating cycle) Fan speed too low Set at higher fan speed. Check if operating properly. Instruct customer Exhaust or fresh air door open on proper use of control Dirty filter...
  • Page 72 TROUBLESHOOTING HEAT PUMP ROOM AIR CONDITIONERS: TROUBLE SHOOTING TIPS REFRIGERANT SYSTEM DIAGNOSIS - HEATING CYCLE LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Outdoor Ambient Too Outdoor Ambient Too Refrigerant System Low Airflow Across High For Operation In High for Operation in Restriction Outdoor Coil...
  • Page 73 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 High Load Conditions Low Load Condi�ons Low Air Flow Across High Air Flow Across Refrigerant System Low Airflow Across Indoor Coil...

  • Page 74: Wiring Diagrams

    WIRING DIAGRAMS Figure 801 (Wiring Diagrams)
  • Page 75 WIRING DIAGRAMS Figure 802 (Wiring Diagrams)
  • Page 76 WIRING DIAGRAMS Figure 803 (Wiring Diagrams)

  • Page 77: Parts Catalog

    Items with a - in front of the item number (for example -10), are non illustrated items. Items with an * in front of the number (for example *10) are non-stocked items. If you require these items contact Friedrich customer service at (1-800-541-6645) to check for availability and lead time.
  • Page 78 PARTS CATALOG FIgure 901 (Exterior Parts)
  • Page 79 PARTS CATALOG FIGURE 901 ITEM PART PART DESCRIPTION USED ON MODEL NUMBER 61612706 INTAKE GRILLE WM 60865812 FILTER AIR W/M 61607012 ASSY DECO FRONT W/ SEAL GASKET (WMT) 2019 62602100 RAC GEN IV - REMOTE CONTROL UNIT- - XYX-0601 61717306 GASKET CHASSIS SEAL LONG 61717307 GASKET CHASSIS SEAL...
  • Page 80 PARTS CATALOG 10 SEE DETAIL A DETAIL A FIgure 902 (Refrigeration)
  • Page 81 PARTS CATALOG FIGURE 902 ITEM PART PART DESCRIPTION USED ON MODEL NUMBER 61606219 BASEPAN ASSY WHT12A33A 61606217 BASEPAN ASSY WET10A33A, WET12A33A 61606220 BASEPAN ASSY WET16A33A 62100914 BASEPAN ASSY WCT08A10A, WCT10A10A, WCT12A10A, WCT12A10B, WCT10A30A, WCT12A30A, WCT12A30B 62100916 BASEPAN ASSY WCT16A30A 62104937 SUCTION TUBE ASSY WET16A33A, WCT16A30A 62104939...
  • Page 82 PARTS CATALOG FIGURE 902 ITEM PART PART DESCRIPTION USED ON MODEL NUMBER 61896042 EVAPORATOR COIL ASSY WCT08A10A-D USED ON WCT08A10-D AND LATER 62103319 EVAPORATOR COIL ASSY WET16A33A, WCT16A30A WES.312X4X16RC2E45A23X11H6 62103318 EVAPORATOR COIL ASSY WCT10A10A, WCT10A30A WES.375X3X16RC2V45A23X11H6 61850266 CONDENSOR COIL ASSY WET16A33A, WCT16A30A WCS.250X5X16XC9K45A17X15H3 61850207...
  • Page 83 PARTS CATALOG FIGURE 902 ITEM PART PART DESCRIPTION USED ON MODEL NUMBER CAP TUBE ASSY KIT WCT12A10B (INCLUDES CAP TUBE ASSY (PN 62104640), STRAINER, AND STRAINER HOLDER CAP TUBE ASSY KIT WCT12A30B (INCLUDES CAP TUBE ASSY (PN 62104645), STRAINER, AND STRAINER HOLDER 67000215 CAP TUBE ASSY KIT...
  • Page 84 PARTS CATALOG DETA IL MOTOR MOU N T A SY DETA IL TYP 3 - P LC S TERMINAL "C" FACING FORWARD FIgure 903 (Blower Module)
  • Page 85 PARTS CATALOG FIGURE 903 ITEM PART PART DESCRIPTION USED ON MODEL NUMBER 62101210 HEATER 3.4 KW TTW @ 230V WHT12A33A, WET10A33A, WET12A33A, WET16A33A 61999802 FLANGE AIR DEFLECTOR 61821800 SHIELD HEAT SMALL WHT12A33A, WET10A33A, WET12A33A, WET16A33A 62101400 INSUL R/SIDE TTW 62100601 BLOWER FRONT 2"...
  • Page 86 PARTS CATALOG FIgure 904 (User Interface)
  • Page 87 PARTS CATALOG FIGURE 904 ITEM PART PART DESCRIPTION USED ON MODEL NUMBER 62100007 PANEL CONTROL MOUNTING WM 2019 67000182 ELECTRONIC CONTROL BOARD KIT WHT12A33A RAC MASTER POWER/RELAY MODULE SMPS - 3SP/ COOL/EH/HP (PN 62603075) PIN, CIRCUIT BOARD 4 EA (PN 61600527) 67000178 ELECTRONIC CONTROL BOARD KIT WET10A33A, WET12A33A, WET16A33A...

  • Page 88: Available Accessories

    AVAILABLE ACCESSORIES WSE Sleeve/ Exterior Grilles Standard Grille Premium, expanded metal Optional Architectural Grille- AG grille with powder coat paint. Premium extruded aluminum Ships with WSE sleeve. grille. INCORRECT Horizontal Louvers IMPORTANT: CORRECT Vertical Louvers Operating the air conditioner with incorrect rear grille or without Baffle Adapter Kit (on 19 ¾"...
  • Page 89 FRIEDRICH in your Room Air Conditioner fails because of a defect in workmanship or material within sixty months from date of purchase, FRIEDRICH will pay a labor allowance of $100 and parts necessary to repair the Sealed Refrigeration System;...
  • Page 90 THIS PAGE LEFT INTENTIONALLY BLANK.
  • Page 91 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. This information is used to identify product failure trends, initiate corrective action, and improve product quality, thereby further reducing warranty expenses while increasing customer satisfaction levels.

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