Johnson Controls York FREE MATCH EK-Series, Service Manual

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Table of Contents
Domestic Air Conditioner
1.Introduction -------------------------------------------------------------------------------------------------------------------1
2.List of fuctions ---------------------------------------------------------------------------------------------------------------6
3.Specifications ----------------------------------------------------------------------------------------------------------------7
4.Printed Circuit Board Connector Wiring Diagram -----------------------------------------------------------------9
5.Funcitions and Contro l---------------------------------------------------------------------------------------------------14
5.1 Main functions and control specification of indoor unit - --------------------------------------------------------14
5.2 -----------------------------------------------------------------------------------22
6. Service Diagnosis -----------------------------------------------------------------------------------------------------------41
6.1 Caution for Diagnosis-------------------------------------------------------------------------------------------------------41
6.2 Problem Symptoms and Measures-------------------------------------------------------------------------------------41
6.3 Error Codes and Description indoor display--------------------------------------------------------------------------42
6.3.1 Thermistor or Related Abnormality-----------------------------------------------------------------------------------43
6.3.2 EEPROM abnormal------------------------------------------------------------------------------------------------------44
6.3.3Indoor AC fan motor malfunction------ -----------------------------------------------------------------------------------45
6.3.4 Outdoor DC fan motor fault---------------------------------------------------------------------------------------------46
6.3.5 IPM protection--------------------------------------------------------------------------------------------------------------47
6.3.6 Over-current of the compressor----------------------------------------------------------------------------------------48
6.3.7 The communication fault between IPM and outdoor PCB ------------------------------------------------------49
6.3.8 Power Supply Over or under voltage fault---------------------------------------------------------------------------50
6.3.9 Overheat Protection For Discharge Temperature------------------------------------------------------------------51
6.3.10 The communication fault between indoor and outdoor------------------ ------------------------------------------52
6.3.11 Loss of synchronism detection----------------------------------------------------------------------------------------54
6.3.12 High work-intense protection------------------------------------------------------------------------------------------55
7.exponent- -------------------------------------------------------------------------------------------------------------------------56
9.Removal Procedure ----------------------------------------------------------------------------------------------------------81
10.Wiring Diagrams --------------------------------------------------------------------------------------------------------------102
Contents
The control system of outdoor unit
8. ------------------------------------------------------------------------------ 63 Installation manual of room Air conditioner
5.3 -----------------------------------------------------------------------------------22
Value of termistor
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