Friedrich MWM12Y1J Service & Parts Manual

3 PB
TABLE OF CONTENTS
Test Operation‑ 61
REMOVAL‑ 62
Indoor Unit‑ 62
Outdoor Unit‑ 68
R‑410A SEALED SYSTEM REPAIR‑ 72
Service Valves Appearance‑ 72
Pumping Down‑ 73
Gas Charging (After Repair)‑ 74
COMPONENTS TESTING ‑ 75
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15k)‑ 75
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (20k)‑ 76
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (50k)‑ 77
9‑12k Indoor Unit Printed Circuit Board Identication‑ 78
18k Indoor Unit Printed Circuit Board Identication‑ 79
24k Indoor Unit Printed Circuit Board Identication‑ 79
36k Indoor Unit Printed Circuit Board Identication‑ 80
9‑12k Outdoor Unit Printed Circuit Board Identication‑ 81
18‑24k Outdoor Unit Printed Circuit Board Identication‑ 81
36k Outdoor Unit Printed Circuit Board Identication‑ 82
TROUBLESHOOTING‑ 83
Diagnostic Codes‑ 83
Malfunction of Temperature Sensor F1, F2‑ 92
Malfunction of blocked Protection of IDU Fan Motor H6‑ 93
Malfunction of Protection of Jumper Cap C5‑ 94
Malfunction of IDU Fan Motor U8‑ 95
Overcurrent Protection E5‑ 96
Malfunction of Communication E6 ‑ 97
Malfunction of Power Supply from Indoor to Outdoor Unit‑ 98
Indoor fan does not rotate and there is no Feedback‑ 99
Temperature sensor malfunction‑ 100
Malfunction diagnosis of startup failure‑ 101
Diagnosis of losing synchronism for compressor‑ 102
Diagnosis of overload and discharge malfunction‑ 103
Capacity Charging malfunction (Outdoor unit;18k, 24k, and 36k)‑ 104
IPM Protection, Out‑of‑Step Fault, Compressor Phase Overcurrent‑ 105
PFC (Correction Power Factor) Outdor Unit Malfuction‑ 107
Troubleshooting for Normal Malfunction‑ 108
WIRING DIAGRAMS‑ 112
9‑12K Indoor Unit Wiring Diagram ‑ 112
18K Indoor Unit Wiring Diagram‑ 112
24K Indoor Unit Wiring Diagram‑ 113
36K Indoor Unit Wiring Diagrams ‑ 113
9‑12K Outdoor Unit Wiring Diagrams ‑ 114
18k Outdoor Unit Wiring Diagrams‑ 114
24k Outdoor Unit Wiring Diagrams‑ 115
36k Outdoor Unit Wiring Diagrams‑ 115
PARTS CATALOG‑ 116
Indoor Unit MWM09Y1J, MWM12Y1J‑ 116
Indoor Unit MWM18Y3J, MWM24Y3J‑ 118
Indoor Unit MWM36YJ3 ‑ 121
Outdoor Unit MRM09Y1J, MRM12Y1J‑ 123
Outdoor Unit MRM18Y3J‑ 126
Outdoor Unit MRM24Y3J‑ 128
Outdoor Unit MRMY36J‑ 130
APPENDIX‑ 132
Appendix 1: Reference Sheet of Celsius and Farenheit‑ 132
Appendix 2: Conguration of Connection Pipe‑ 132
Appendix 3: Pipe Expanding Method‑ 133
LIMITED WARRANTY‑ 134

Friedrich MWM12Y1J Specifications

General

Brand	Friedrich
Model	MWM12Y1J
Category	Air Conditioner
Language	English