Table of Contents INTRODUCTION Important safety information Personal injury or death hazards Personal Injury Or Death Hazards SPECIFICATIONS Refrigeration Systems Performance Data SPECIFICATIONS Compressor Performance Data Electrical Data 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 Motor Does Not Operate At All Compressor Or Outdoor Fan Does Not Operate At All...
Installation procedures are not given in this manual. They are given in the Installation/Operation manual which can be aquired on the Friedrich website. Click the Link or scan the QR code to be directed to the Profeesional page where you can locate our technical literature.
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CAUTION: Do Not Operate Equipment During Active Stages Of Construction To ensure proper operation, Friedrich requires that all equipment is not operated during active construction phases. This includes active stages of completing framing, drywalling, spackling, sanding, painting, flooring, and moulding in the equipment’s designated conditioning space. The use of this equipment during construction could result in premature failure of the components and/or system and is in violation of our standard warranty guidelines.
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...
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.
SPECIFICATIONS Electrical Data WARNING NOTICE ELECTRIC SHOCK HAZARD FIRE HAZARD Turn off electric power before service or installation. electically unsafe conditions which could cause moderate All electrical connections and wiring MUST be or serious property damage. Read, understand and follow the above warning. codes which have jurisdiction.
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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.
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.
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.
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OPERATION Control Panel or HEAT mode and...
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.
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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 <...
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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 .
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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.
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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.
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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.
TROUBLESHOOTING Check Thermistors 1. Gain Acces to Main PCB (logic) board 2. Using a multi meter ohm across applicaple pins for the sensor you are checking. 3. All Sensors are 5k. Refer to thermistor chart on following for resistance and temperature deviation. 4.
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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...
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 715...
TROUBLESHOOTING Fan Motor Does Not Operate At All Indoor fan does not operate at all. Check: Connector contact Motor output connector Motor capacitor Check: Fan fixed state Fan contact state Motor - related parts Motor detail check Operation mode check Check: Motor driving circuit PCB assy check...
TROUBLESHOOTING Compressor 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.
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 716...
TROUBLESHOOTING Undercharged Refrigerant Systems NOTE: Ensure fan is on high speed during testing. WARNING An undercharged system will result in poor performance (low pressures, etc.) in both the heating RISK OF ELECTRIC SHOCK and cooling cycle. 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.
TROUBLESHOOTING 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.
TROUBLESHOOTING 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.
COMPONENT TESTING Check Capillary Tube 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.
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. codes which have jurisdiction.
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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.
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...
R-32 SEALED SYSTEM REPAIR General Information WARNING: Electrical Shock Hazard Disconnect all power to the unit before starting maintenance. All electrical connections and wiring MUST be installed by a qualified electrician and conform to all codes which have jurisdiction. Failure to do so can result in property damage, severe electrical shock or death.
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R-32 SEALED SYSTEM REPAIR General Information Warning: No ignition sources: No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space.
R-32 SEALED SYSTEM REPAIR Required Equipment • Multi-meter • Ampmeter • R-32 E.P.A. Approved Refrigerant Recovery System • Vacuum Pump rated for R-32 refrigerant (capable of 300 microns or less vacuum.) • Oxy/ Acetylene torch or similar equipment utilized for brazing. •...
R-32 SEALED SYSTEM REPAIR Refrigerant Removal, Recovery, and Evacuation NOTE: When accessing the refrigerant in the system to make repairs or for any other purpose, conventional procedures shall be used. However, for FLAMMABLE REFRIGERANTS (R-32 is classified in the A2L group for mildly flammable refigerants) it is important that best practice is followed since flammability is a consideration.
R-32 SEALED SYSTEM REPAIR Component Replacement/Brazing Warning: • Ensure sufficient ventilation at the repair place. Warning: Presence of fire extinguisher. If any hot work is to be conducted on the refrigerating equipment or any associated parts, have a ABC class fire extinguisher available to hand. Warning: No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
R-32 SEALED SYSTEM REPAIRS Refrigerant Charging WARNING: Electrical Shock Hazard Disconnect all power to the unit before starting maintenance. All electrical connections and wiring MUST be installed by a qualified electrician and conform to all codes which have jurisdiction. Failure to do so can result in property damage, severe electrical shock or death.
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R-32 SEALED SYSTEM REPAIRS Refrigerant Charging 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. when working with a torch.
R-32 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 replacing. WARNING 2. Recover all refrigerant from the system though the process tubes. ELECTRIC SHOCK HAZARD Turn off electric power before service or Refer to Refrigerant Removal, Recovery, and Evacuation Section of this installation.
R-32 SEALED SYSTEM REPAIRS Compressor Replacement -Special Procedure in Case of Compressor Burnout 1. Recover all refrigerant and oil from the system. Refer to Refrigerant Removal, Recovery, and Evacuation Section of this manual. WARNING 2. Remove compressor, capillary tube and filter drier from the system. HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant CAUTION: Seal all openings on the defective compressor...
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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).
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.
DECOMMISIONING OF UNITS Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely and tested prior to re-use. NOTE: When breaking into the refrigerant circuit to make repairs or for any other purpose, conventional procedures shall be used.
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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;...
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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. 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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