Table Of Contents - Mitsubishi Heavy Industries KXZ Series Service Manual

Table of Contents

Contents2
Outline Of Operation Control By Microcomputer3
Remote Control3
Icon Display3
Wired Remote Control4
Wireless Remote Control5
Operation Control Function By The Wired Remote Control6
Switching Sequence Of The Operation Mode Switches Of Remote Control6
Cpu Reset6
Power Failure Compensation Function (Electric Power Source Failure)6
Operation And Setting From Remote Control8
Operation Control Function By The Indoor Control11
Operations Of Functional Items During Cooling/Heating11
Dehumidifying Operation11
Timer Operation11
Remote Control Display During The Operation Stop12
Hot Start (Cold Draft Prevention At Heating)12
Combination Of Patterns Which Can Be Set For The Timer Operations12
Rc-E512
Hot Keep13
Auto Swing Control13
Ending Condition13
Thermostat Operation14
Cooling14
Heating14
Fan Control During Heating Thermostat Off15
Fan Control During Cooling Thermostat Off15
Filter Sign16
Compressor Inching Prevention Control16
Drain Pump Control16
Drain Motor (Dm) Control17
Operation Check/Drain Pump Test Run Operation Mode17
Cooling, Dehumidifying Frost Protection17
Anomalous Fan Motor18
High Ceiling Control18
Abnormal Temperature Thermistor Wire/Short-Circuit Detection18
External Input/Output Control (Cnt Or Cnta)18
Output For External Control (Remote Display)19
Operation Permission/Prohibition20
Selection Of Cooling/Heating External Input Function21
Room Temperature Detection Temperature Compensation During Heating22
Return Air Temperature Compensation22
High Power Operation/Energy-Saving Operation22
Warm-Up Control22
Home Leave Mode23
Fan Circulator Operation23
The Operation Judgment Is Executed Every 5 Minutes23
Iu Overload Alarm/Peak-Cut Time23
Operation Control Function By The Outdoor Control24
Normal Control24
Compressor Operation Range25
Maximum Compressor Frequency25
Minimum Compressor Frequency25
Outdoor Fan Control26
Outdoor Fan Speed And Fan Motor Rotation Speed26
Fan Control During Cooling26
Outdoor Fan Heating Control26
Defrost Control27
Temperature Condition Of Defrosting27
Protective Control28
Test Run28
High Pressure Protective Control/Error28
Low Pressure Protective Control/Error28
Optional Controls29
Demand Control30
Demand Control From Indoor Unit31
Silent Mode Control32
Start Conditions32
Control Contents32
End Condition32
Outdoor Fan Snow Protection Control33
External Output33
Setting Method Of Outdoor Fan Control33
End Conditions Of Outdoor Fan Snow Protection Control33
Outdoor Operation Mode34
Forced Cooling/Heating Operation36
Emergency Stop Control36
Pump Down Operation Control For Removal Of The Unit37
Vtcc : Variable Temperature And Capacity Control38
Data Output40
7-Segment Display And Operation Data Retention40
Individual Definition Of Display Contents41
Operation Information42
Control Status46
Protection Control Status46
Definition Of Signal46
Compressor Stop Causes47
Saving Of Operation Data48
Indoor Unit Indicate Data48
Outdoor Unit Indicate Data49
Output Of Pcb Hardware51
Outdoor Pcb Setting57
Control Pcb57
Indoor Pcb Setting58
Basics Of Troubleshooting59
Explanation Of Troubleshooting60
Checking 15V On The Control Pcb60
Inspection Of Short-Circuit On The Power Transistor Module Terminals60
Inverter Checker For Diagnosis Of Inverter Output61
Outdoor Unit Check Points62
Contents Of Troubleshooting63
List Of Inspection Displays63
Troubleshooting Procedures64
Operates But Does Not Cool64
Operates But Does Not Heat65
Earth Leakage Breaker Activated66
Excessive Noise/Vibration67
Louver Motor Anomaly70
Power Source System Anomaly (Power Source To Indoor Unit Pcb)71
Power Source System Error (Power Source To Remote Control)72
Wait73
No Display79
Remote Control Communication Error80
Duplicated Indoor Unit Address81
Outdoor Unit Signal Line Error82
Communication Error During Operation83
Indoor Heat Exchanger Temperature Thermistor Anomaly (Thi-R)84
Indoor Return Air Temperature Thermistor Anomaly (Thi-A)85
Drain Trouble86
Excessive Number Of Indoor Units By Controlling One Remote Control87
Address Setting Error Between Master And Slave Indoor Units88
Address Setting Error By Mixed Setting Method89
Indoor Dc Fan Motor Anomaly90
Address Setting Error Of Master And Slave Indoor Units91
Indoor Unit Operation Check, Drain Motor Check Mode Anomaly92
Indoor Dc Fan Motor Rotation Speed Anomaly93
Defective Panel Switch Operation (Fdt)94
Remote Control Temperature Thermistor Anomaly (Thc)95
Duplicated Outdoor Unit Address No.96
Open L3 Phase On Power Source At Primary Side97
Discharge Pipe Temperature Error (Tho-D)98
Outdoor Heat Exchanger Temperature Thermistor (Tho-R) Anomaly99
Subcooling Coil Temperature Thermistor (Tho-Sc,-H) Anomaly99
Outdoor Air Temperature Thermistor Anomaly (Tho-A)100
Discharge Pipe Temperature Thermistor Anomaly (Tho-D)101
High Pressure Anomaly (63H1 Activated)102
Power Transistor Overheat103
Current Cut (Cm1)104
Excessive Number Of Indoor Units Connected105
Excessive Total Capacity Of Connection105
Applicable Model105
Error Detection Method105
Condition Of Error Displayed105
Liquid Flooding Anomaly (Cm1)106
Indoor Keeps Flashing Stays Off106
Outdoor Keeps Flashing 1-Time Flash106
Troubleshooting106
Communication Error Between Inverter Pcb And Outdoor Control Pcb107
Mixed Address Setting Methods Coexistent In Same Network108
Outdoor Dc Fan Motor Anomaly109
Low Pressure Anomaly111
Save Data For 30 Minutes Before Stopping In Mente Pc111
Is The111
Suction Pipe Temperature Thermistor Anomaly (Tho-S)112
Under-Dome Temperature Thermistor Anomaly (Tho-C)112
High Pressure Sensor Anomaly (Psh)113
Low Pressure Sensor Anomaly (Psl)113
Anomalous Compressor By Loss Of Synchronism114
Compressor Startup Failure (Cm1)115
Emergency Stop116
Table Of Contents116
Outdoor Unit Control Pcb Replacement Procedure117
Outdoor Unit Inverter Pcb Replacement Procedure119
Target Places Which Are Removed Harnesses And Screws120
Installationplace Of Inverter Pcb121
Installation Method To Power Transistor121
Outdoor Unit Converter Pcb Replacement Procedure122
Voltage Measurement Points123
Outdoor Unit Transistor Module Replacement Procedure124
Outdoor Unit Diode Module Replacement Procedure125
Function Of Connection126
Electrical Wiring127
Piping System128
Application Data129
Installation Of Outdoor Unit129
Before Beginning Installation130
Selecting The Installation Location130
Unit Delivery And Installation131
Refrigerant Piping131
Installation Space (Ex. Servicing Space)131
Restrictim On Use Of Pipes131
Pipe Size Selection132
Selection Of The Branch Set For Indoor Unit Side132
Selection Of The Branch Pipe Set132
Selection Of The Header Set132
Piping Work133
Field Piping Work133
Air Tightness Test And Vacuuming134
Additional Charge Of Refrigerant135
Heating And Condensation Prevention135
Drain Piping Work136
Electric Wiring136
Wiring System Drawing136
Power Source Connection136
How To Connect Signal Cables137
Control Settings138
Remote Control Wiring Specifications138
Unit Address Setting138
Manual Address Setting139
Automatic Address Setting139
Address Change (Available Only With New Sl)141
7-Segment Display Indication In Automatic Address Setting142
Selection Switching143
External Input And Output Terminals Specifications143
Silent Mode Setting143
Test Operation And Transfer144
Cautions For Servicing144
Demand Control Setting144
Method For Connecting The Accessory Pipe145
About Brazing145
Connection Example146
Instructions For Installing The Branch Pipe Set147
How To Select A Branching Pipe149
How To Select A Header Set149
Example Of Piping150
Branching Type Configuration150
Header Type Configuration150
Branching + Header Mixed Type Configuration150