Friedrich CEW18B33A Service Manual
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Friedrich CEW18B33A Service Manual

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RoomAir Conditioners
Chill Premiere Series Models (R-410A Refrigerant)
Unifit Series Models (R-410A Refrigerant)
1
93011400_06
Fixed chassis, cool only
CCF05A10A, CCF06A10A, CCF08A10A, CCF10A10A
CCF12A10A
Slide out chassis, cool only
CCW06B10A, CCW08B10A, CCW10B10A, CCW12B10A
CCW15B10A, CCW18B30A, CCW24B30A
Slide out chassis, heat & cool
CEW08B11A, CEW12B33A, CEW18B33A, CEW24B33A
Cool Only
UCT08A10A, UCT10A10A, UCT10A30A,
UCT10A30B,UCT12A10A, UCT12A30A, UCT14A30A,
UCT14A30B
Cool with Electric Heat
UET08A11A, UET10A33A, UET12A33A, UET14A33A

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Summary of Contents for Friedrich CEW18B33A

  • Page 1 CCF05A10A, CCF06A10A, CCF08A10A, CCF10A10A CCF12A10A Slide out chassis, cool only CCW06B10A, CCW08B10A, CCW10B10A, CCW12B10A CCW15B10A, CCW18B30A, CCW24B30A Slide out chassis, heat & cool CEW08B11A, CEW12B33A, CEW18B33A, CEW24B33A Unifit Series Models (R-410A Refrigerant) Cool Only UCT08A10A, UCT10A10A, UCT10A30A, UCT10A30B,UCT12A10A, UCT12A30A, UCT14A30A, UCT14A30B...

  • Page 2: Table Of Contents

    Table of Contents INTRODUCTION Important safety information Personal injury or death hazards Personal Injury Or Death Hazards SPECIFICATIONS Electrical Data Product Dimensions OPERATION Remote Control Control Panel Sequence of Operation TROUBLESHOOTING Check Thermistors Check Thermistors -Resistance Table of Thermistors (5K) Product Does Not Operate At All Indoor Fan Does Not Operate At All Compressor Or Outdoor Fan Does Not Operate At All...

  • Page 3: Introduction

    Installation procedures are not given in this manual. They are given in the Installation/Operation manual which can be aquired on the Friedrich website. 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.

  • Page 4: Personal Injury Or Death Hazards

    INTRODUCTION Personal injury or death hazards WARNING AVERTISSEMENT ADVERTENCIA SAFETY FIRST Do not remove, disable Ne pas supprime, désactiver No eliminar, desactivar o or bypass this unit’s ou contourner cette l´unité pasar por alto los safety devices. Doing so des dispositifs de sécurité, dispositivos de seguridad de may cause fire, injuries, faire vous risqueriez de...

  • Page 5: Personal Injury Or Death Hazards

    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. Reference EPA regulations (40 CFR Part 82, Subpart F ) Section 608. •...

  • Page 6: Specifications

    CEW08B11A 7800 4200 1450 11.0 10.9 R410A 15.17 44/61 CEW12B33A 12000 10600 1060 3450 11.0 10.9 R410A 20.81 64/86 CEW18B33A 18000 10600 1600 3450 10.8 10.7 R410A 29.98 106/136 CEW24B33A 23,200 10600 10.6 2340 3450 R410A 37.03 117/144 UNI-FIT® Cool Only...
  • Page 7 Inches Inches Inches Width Inches Minimum* Maximum CCF05A10A, CCF06A10A, CCF08A10A CCF10A10A, CCF12A10A CCW06B10A, CCW08B10A, CEW08B11A, CCW10B10A, CCW12B10A, CEW12B33A, CCW15B10A, CCW18B30A, CEW18B33A CCW24B30A, CEW24B33A Chill Premier Installation Figure 202 ( Carrier Fedders/ White-Westing- (51S Emerson/ house/ Frigidaire/ Sleeve Friedrich Emer- Friedrich...

  • Page 8: Electrical Data

    6 - 15P CCW18B30A, CCW24B30A, UNI-FIT® 250V - 15A UCT10A30A, UCT10A30B, 6-15P UCT12A30A,UCT14A30A, UCT14A30B Chill® Premier CCW18B30A, CCW24B30A Chill® Premier CEW12B33A, CEW18B33A, 250V-20A 6-20P CEW24B33A UNI-FIT® 4.75 UET10A33A, UET12A33A, UET14A33A Figure 204 (Circuit Breaker / Plug / Receptacle / Cord Rating)
  • Page 9 SPECIFICATIONS Electrical Data WARNING 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.

  • Page 10: Product Dimensions

    SPECIFICATIONS Product Dimensions Model A “(inches) B “(inches) C “(inches) Chill® Premier CCF05A10A, CCF06A10A, CCF08A10A CCF10A10A, CCF12A10A CCW06B10A, CCW08B10A CEW08B11A, CCW10B10A, CCW12B10A, CEW12B33A, CCW15B10A, CCW18B30A, CEW18B33A CCW24B30A, CEW24B33A UNI-FIT® All Models 24 7/32 14 17/32 20 9/32 Figure 205...

  • Page 11: Operation

    OPERATION Remote Control 1. Power: Turn the air conditioner on and off. This button will clear the TIMER setting. 2. MODE: Press the button to select the mode of operation, AUTO, COOL, DRY, FAN ONLY, HEAT. Note: The HEAT mode is only for some heating models. If you do not need it, press the MODE button for more than 5 seconds to delete the HEAT function, and the COOL mode will be selected automatically.

  • Page 12: Control Panel

    OPERATION Control Panel USING YOUR AIR CONDITIONER Cool Mode: The cooling function allows the air Electronic Control Panel & Remote Control conditioner to cool the room and at the same time reduces air humidity. Press the MODE button to NOTE: This display always shows the room temperature in Fan activate the cooling function.
  • Page 13 OPERATION Control Panel or HEAT mode and...

  • Page 14: Sequence Of Operation

    OPERATION Sequence of Operation Main function NOTES: RT------Room Temperature. IC------Indoor CoilTemperature. ST------indoor Set Temperature. OC---Outdoor Coil Temperature. CRT---Compensated Room Temperature 1. Cooling mode In the cooling mode, COOL indicator is ON, the set temperature and fan speed could be changed or adjusted. a.
  • Page 15 OPERATION Sequence of Operation 3. Heating mode When in heating operation mode, the set temperature, fan speed and air direction can be adjusted, compressor does not operate, but electrical heater works, and indoor fan motor starts up 10s later. a ST-RT≥ 1.8°F electrical heater operates b ST-RT <...
  • Page 16 OPERATION Sequence of Operation a) The indoor fan runs at the set speed when processing sleep mode, after the 1st change, unit runs at low speed, and after the 2nd change, unit runs at low-low speed ( if AC without low-low speed, it runs at low speed instead). 10 hours later AC quits from sleep mode and runs at former set fan speed .
  • Page 17 OPERATION Sequence of Operation a) The indoor fan motor runs for 1 min according to the set speed continuously, and then stops. b) The indoor fan keeps the stopping status in the following 10 min if RT meets the requirement of compressor stopping work.
  • Page 18 OPERATION Sequence of Operation Protection / Failure code 1 Anti-frozen protection for indoor evaporator: If IPT≤32°F for continuous 3min, compressor shut off, fan motor keeps former operation; 3min later, if IPT≥50°F, compressor start up operation and fan motor keeps the former running status. 2 SENSOR error protection When sensor short circuit or broken, Room Temperature failure shows E1, and Coil Temperature failure shows E2.
  • Page 19 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 20: Troubleshooting

    5kΩ UET14A33A 5kΩ 5kΩ 5kΩ CCW06B10A 5kΩ CCW08B10A 5kΩ CCW10B10A 5kΩ 5kΩ CCW12B10A 5kΩ 5kΩ CCW15B10A 5kΩ 5kΩ CCW18B30A 5kΩ 5kΩ CCW24B30A 5kΩ 5kΩ CEW08B11A 5kΩ 5kΩ 5kΩ CEW12B33A 5kΩ 5kΩ 5kΩ CEW18B33A 5kΩ 5kΩ 5kΩ CEW24B33A 5kΩ 5kΩ 5kΩ...

  • Page 21: Check Thermistors -Resistance Table Of Thermistors (5K)

    TROUBLESHOOTING Check Thermistors -Resistance Table of Thermistors (5K) Temp Resis Temp Resis Temp Resis Temp Resis Temp Resis 130100 34252 10785 8275 3119 125518 33209 10499 8063 3048 121114 32202 10221 7857 2980 116881 31228 9952 7657 2913 112811 30288 9690 7462 2848...
  • Page 22 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 23: Product Does Not Operate At All

    TROUBLESHOOTING Product Does Not Operate At All Product does not operate at all. Power supply voltage check Product input voltage Power input voltage on driving load terminal. Connector contact check Display PCB connector Power transformer output voltage AC about 12±3V PCB assy check Figure 401...

  • Page 24: Indoor Fan Does Not Operate At All

    TROUBLESHOOTING Indoor Fan Does Not Operate At All Indoor fan does not operate at all. Check: Connector contact Motor output connector Motor capacitor Check: Fan(Blower) fixed state Fan(Blower) contact Motor - related parts state Motor detail check Operation mode check Check: Motor driving circuit PCB assy check...

  • Page 25: Compressor Or Outdoor Fan Does Not Operate At All

    TROUBLESHOOTING Compressor Or Outdoor Fan Does Not Operate At All Compressor or outdoor fan does not operate at all. Re-input after power failure Set the desired temperature of remote controller to be 4°F lower than room temperature, and start the cooling operation. Repeat running/stopping Does not operate at all.

  • Page 26: Display E1 Or E2

    TROUBLESHOOTING Display E1 or E2 Display E1 and E2 Check the wire connection of indoor Connector contact temperature sensor assembly. Replace sensor Replace main PCB Figure 404...

  • Page 27: Capillary Tube Assy (Cool Only Units)

    COMPONENT TESTING Capillary Tube Assy (Cool Only Units) Test the Capillary Tube and Check Valve Assy 1. Check the capillary tube temperature by hand where the refrigerant enters the capillary tube. A partial restriction of the capillary tube will be indicated by frost or freezing in that area. 2.

  • Page 28: 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 29 COMPONENT TESTING 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 30: 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. Figure 23 WARNING Blower/Fan Motor ELECTRIC SHOCK HAZARD...

  • Page 31: Heating Element

    COMPONENTS TESTING Heating Element WARNING Heating Element Example 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.

  • Page 32: 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. NOTE: SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER.

  • Page 33: Refrigerant Charging

    R-410A SEALED SYSTEM REPAIRS Refrigerant Charging WARNING WARNING HIGH PRESSURE HAZARD RISK OF ELECTRIC SHOCK Sealed Refrigeration System contains refrigerant Unplug and/or disconnect all electrical power and oil under high pressure. to the unit before performing inspections, maintenances or service. Proper safety procedures must be followed, and proper protective clothing must be worn Failure to do so could result in electric shock,...

  • Page 34: Undercharged Refrigerant Systems

    R-410A SEALED SYSTEM REPAIRS Undercharged Refrigerant Systems NOTE: Ensure fan is on high speed during testing. 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 Whenever you service a unit with an undercharge of to the unit before performing inspections, refrigerant, always suspect a leak.

  • Page 35: Overcharged Refrigerant Systems

    R-410A SEALED SYSTEM REPAIRS Overcharged Refrigerant Systems NOTE: Ensure fan is on high speed during testing. Compressor amps will be near normal or higher. WARNING Noncondensables can also cause these symptoms. To confirm, remove some of the charge, if conditions RISK OF ELECTRIC SHOCK improve, system may be overcharged.

  • Page 36: Restricted Refrigerant System

    R-410A SEALED SYSTEM REPAIRS Restricted Refrigerant System NOTE: Ensure fan is on high speed during testing. 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 37: 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 38: Compressor Replacement

    R-410A SEALED SYSTEM REPAIRS Compressor Replacement 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before WARNING replacing. 2. Recover all refrigerant from the system though the process ELECTRIC SHOCK HAZARD tubes.

  • Page 39: Compressor Replacement -Special Procedure In Case Of Compressor Burnout

    R-410A SEALED SYSTEM REPAIRS 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 WARNING system. HIGH PRESSURE HAZARD 3. Flush evaporator condenser and all connecting tubing with dry Sealed Refrigeration System contains refrigerant nitrogen or equivalent.

  • Page 40: Wiring Diagrams

    WIRING DIAGRAMS Chill Premier CCF Models: CCF05A10A CCF06A10A CCF08A10A CCF10A10A CCF12A10A Figure 801...
  • Page 41 WIRING DIAGRAMS Chill Premier CCW Models: CCW06B10A . CCW24B30A Figure 802...
  • Page 42 WIRING DIAGRAMS Chill Premier CCW CCW08B10A odels: Models: CCW10B10A.CCW12B10A.CCW15B10A Figure 803...
  • Page 43 WIRING DIAGRAMS Chill Premier CCW10B10A, CCW12B10A, CCW15B10A, CCW18B30A Models: CCW10B10A.CCW12B10A.CCW15B10A Figure 804...
  • Page 44 WIRING DIAGRAMS Chill Premier CEW CEW08B11A Figure 805...
  • Page 45 WIRING DIAGRAMS Chill Premier CEW CEW12B33A, CEW18B33A Figure 806...
  • Page 46 WIRING DIAGRAMS Chill Premier CEW CEW24B33A Figure 807...
  • Page 47 WIRING DIAGRAMS Unifit UCT08A10A, UCT10A10A, UCT12A10A, UCT10A30A, UCT12A30A, UCT14A30A Models: UCT08A10A UCT10A10A UCT12A10A UCT10A30A UCT12A30A UCT14A30A Models: UET10A33A UET12A33A UET14A33A UET08A11A Figure 808...
  • Page 48 WIRING DIAGRAMS Unifit UET10A33A, UET12A33A, UET14A33A, UET08A11A Models: UET10A33A UET12A33A UET14A33A UET08A11A Figure 809...
  • Page 49 INTERACTIVE PARTS VIEWER All Friedrich Service Parts can be found on our online interactive parts viewer. Please click on the link below: Interactive Parts Viewer For Further Assistence contact Friedrich customer service at (1-800-541-6645).

  • Page 50: Available Accessories

    AVAILABLE ACCESSORIES Unifit USC SLEEVE An existing or new sleeve is required for installation. The Friedrich USC sleeve ships with the accessories needed for installation in new construction, or installation into an existing sleeve. INCLUDED WITH USC SLEEVE USC wall sleeve ships with weather panels (2) and grille.
  • Page 51 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 52 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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