Friedrich MR12C1H, MW12C1H, MW09C1H, MR09C1H manual Minutes after the complete unit is powered off

Page 59

Troubleshooting

Mainly detect:

Whether the electronic expansion valve is connected well or not? Is electronic expansion valve damaged? Is refrigerant leaked?

20 minutes after the complete unit is powered off

Is the terminal FA for the

 

 

 

 

 

Connect the

electronic expansion valve

 

 

 

 

 

 

 

 

 

 

wires correctly

 

 

 

 

 

connected correctly?

 

 

 

 

 

 

 

 

 

 

 

Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same, less than 100 ohm.

Replace the electronic expansion valve

If the fault is eliminated?

Replace the control panel AP1

If the fault is eliminated?

Coolant leakage, refilling the coolant

End

59

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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 Date Electrical wiringCooling Models TOP View Bottom View Bottom View Function and Control Remote Control OperationsAuto 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 Compressor Protection Function Detection of temperature sensor malfunctionFrequency Control 3-minutes StandbyFreeze-up Protection Control Discharge Pipe ControlInput Current Control Detail Conditions for Start Controlling Tap Control in indoor/outdoor unit silent operation Fan ControlImportant Notices Ground requirements Installation dimension diagram Boring Piping Hole Installing Indoor Unit Installing Outdoor Unit Electric wiringCheck after Installation and Operation Test Check after InstallationInstallation of Healthy Filter Installation and Maintenance of Healthy FilterOptionalTroubleshooting 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 Way Valve Liquid Side 2-way, 3-way Valve AppearanceProcedure Close Close Open Close Balance Refrigerant of the 3-way Valve Evacuation ProcedureAfter Evacuation Gas ChargingRemoval 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