Friedrich MR09C1H, MW12C1H, MW09C1H, MR12C1H manual Refrigeration System Repair Hazards

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Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning.

Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.

Never operate the A/C unit with wet hands.

Use air conditioner on a single dedicated circuit within the specifi ed amperage rating.

Use on a properly grounded outlet only.

Do not remove ground prong of plug.

Do not cut or modify the power supply cord.

Do not use extension cords with the unit.

Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles, clothing, adequately insulated tools, and testing equipment etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

REFRIGERATION SYSTEM REPAIR HAZARDS:

Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair.

Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moderate injury.

Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s fl ame or hot surfaces can cause serious burns.

Make sure to protect personal and surrounding property with fi re proof materials.

Have a fi re extinguisher at hand while using a torch.

Provide adequate ventilation to vent off toxic fumes, and work with a qualifi ed assistant whenever possible.

Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, fl ushing etc.

Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, safety glasses, clothing etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

MECHANICAL HAZARDS:

Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, handling, or working around unit with moving and/or rotating parts.

Be careful when, handling and working around exposed edges and corners of the sleeve, chassis, and other unit components especially the sharp fi ns of the indoor and outdoor coils.

Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

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Contents Split Type Room AIR Conditioner Wall Mounted Type Table of Contents Model and product code Summary and features Important Safety Information Refrigeration System Repair Hazards Property Damage Hazards Specifications 115 MR09C1H MR12C1H Appending date Expanded capacity data tables for both cooling and heating Operation Characteristic Curve 09KUnits Construction Views Refrigerant System Diagram Electrical wiring Electrical DateCooling Models TOP View Bottom View Bottom View Remote Control Operations Function and ControlAuto Timer on Displayed. If the light is tunrned off Disappears Replacement of Batteries Description of Each Control Operation Function and Control Function and Control Setting+ 2, medium speed Tring ≤ Tsetting 2, low speed P2 Maximum cooling and heating 3-minutes Standby Detection of temperature sensor malfunctionFrequency Control Compressor Protection FunctionDischarge Pipe Control Input Current ControlFreeze-up Protection Control Detail Conditions for Start Controlling Fan Control Tap Control in indoor/outdoor unit silent operationImportant Notices Ground requirements Installation dimension diagram Boring Piping Hole Installing Indoor Unit Electric wiring Installing Outdoor UnitCheck after Installation Check after Installation and Operation TestInstallation and Maintenance of Healthy FilterOptional Installation of Healthy FilterTroubleshooting Can not start up Malfunction of four-way valve Is not on, then replace the protector Adjust support washer of compressor, Troubleshooting YELLOW-LED4 GREEN-LED2 RED-LED3 Analysis or processing of some of the malfunction display How to Check simply the main part Troubleshooting Comp Page AP1 Troubleshooting Is stop time of the compressor longer than 3 minutes? Minutes after the complete unit is powered off Start If the fault is eliminated? Troubleshooting Flow chart for outdoor communitcation circuit detecting Troubleshooting Guide Troubleshooting Guide Temp Resistance 2-way, 3-way Valve Appearance Way Valve Liquid SideProcedure Close Close Open Close Balance Refrigerant of the 3-way Valve Procedure EvacuationGas Charging After EvacuationRemoval Procedure Removal Procedure Removal Procedure Removal Procedure of Outdoor Unit Removal Procedure Removal Procedure MW09C1H / MW12C1H Exploded Diagram MW09C1H Parts List MW12C1H Parts List MR09C1H Exploded Diagram MR09C1H Parts List MR12C1H Exploded View MR12C1H Parts List Page Friedrich AIR Conditioning CO