Table Of Contents - York YJHMXH007BARR-FX Service Manual

Contents
1.Introduction-------------------------------------------------------------------------------------------------------------------1
2.List of fuctions---------------------------------------------------------------------------------------------------------------6
3.Specifications ----------------------------------------------------------------------------------------------------------------7
4.Printed Circuit Board Connector Wiring Diagram -----------------------------------------------------------------9
5.Funcitions and Control---------------------------------------------------------------------------------------------------14
5.1 Main functions and control specification of indoor unit - --------------------------------------------------------14
5.2
The control system of outdoor unit
Value of termistor -------------------
5.3
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------------------
6.3.11 Loss of synchronism detection----------------------------------------------------------------------------------------54
6.3.12 High work-intense protection------------------------------------------------------------------------------------------55
7.exponent--------------------------------------------------------------------------------------------------------------------------56
8. Installation manual of room Air conditioner
9.Removal Procedure----------------------------------------------------------------------------------------------------------81
10.Wiring Diagrams--------------------------------------------------------------------------------------------------------------102
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Table of Contents

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Domestic Air Conditioner