Table Of Contents - Mitsubishi Heavy Industries FDC280KXZE1 Service Manual

Table of Contents

Service Manual1
Table Of Contents2
Outline Of Operation Control By Microcomputer3
Remote Control (Option Parts)3
Wired Remote Control Model Rc-Ex1A3
Wired Remote Control Model Rc-E54
Wireless Remote Control5
Operation Section5
Operation Control Function By The Wired Remote Control - Model Rc-Ex1A6
Switching Sequence Of The Operation Mode Switches Of Remote Control6
Cpu Reset6
Power Failure Compensation Function (Electric Power Supply Failure)6
Operation And Setting From Remote Control8
Operation Control Function By The Wired Remote Control - Model Rc-E510
Operation Control Function By The Indoor Control11
Operations Of Functional Items During Cooling/Heating11
Dehumidifying Operation11
Timer Operation11
Combination Of Patterns Which Can Be Set For The Timer Operations12
Remote Control Display During The Operation Stop12
Hot Start (Cold Draft Prevention At Heating)12
Hot Keep13
Auto Swing Control (Fdt, Fdtc, Fdtw, Fdts, Fde Only)13
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 (Return Air/Indoor Heat Exchanger) Wire/Short-Circuit Detection18
External Input/Output Control (Cnt Or Cnta)18
Output For External Control (Remote Display)19
Remote Operation Input19
Operation Permission/Prohibition20
Selection Of Cooling/Heating External Input Function21
Room Temperature Detection Temperature Compensation During Heating22
Return Air Temperature Compensation22
High Power Operation (Rc-Ex1A Only)22
Energy-Saving Operation (Rc-Ex1A Only), Warm-Up Control (Rc-Ex1A Only)22
Home Leave Mode (Rc-Ex1A Only)23
Auto Fan Speed Control (Rc-Ex1A Only)23
Iu Overload Alarm (Rc-Ex1A Only)23
Peak-Cut Time (Rc-Ex1A Only)23
Operation Control Function By The Outdoor Control24
Normal Control24
Operation Of Major Functional Components Under Each Operation Mode24
Compressor Control (Master Unit/Slave Unit)25
Starting Compressor25
Single Use (Model 475, 500, 560 : 2 Compressors Specification)25
2 Outdoor Units Combination Use (Model 615, 670)25
2 Outdoor Units Combination Use (Model 735)26
2 Outdoor Units Combination Use (Model 800, 850, 900)26
2 Outdoor Units Combination Use (Model 950, 1000, 1060, 1120)26
Rotation Of Compressor Start/Stop Order27
3 Outdoor Units Combination Use (Model 1200, 1250, 1300, 1350)27
3 Outdoor Units Combination Use (Model 1425, 1450, 1500, 1560, 1620, 1680)27
Outdoor Fan Control (Master Unit/Slave Unit)28
Outdoor Fan Speed And Fan Motor Rotation Speed28
Outdoor Fan Control In Cooling Mode28
Outdoor Fan Control In Heating Mode28
Defrosting (Master Unit/Slave Unit)29
Conditions For Starting Defrost29
Conditions For Finishing Defrost29
Protective Control30
High Pressure Protective Control/Error30
Low Pressure Protective Control/Error30
Discharge Pipe Temperature Control/Error30
Auto Backup Operation31
Classification Of Auto Backup Operations31
Control Contents Of Auto Backup Operation31
Prohibiting Conditions Of Auto Backup Operation32
Control After The Conditions To Prohibit The Auto Backup Operation Have Been Established32
Test Run33
Test Run From Master Outdoor Units With Dip Switches Sw5-1 And Sw5-233
Starting Conditions Of Test Run Operation33
Ending Conditions Of Test Run Operation33
Option Controls34
External Input And Demand Input (Master Unit/Slave Unit)34
Operation Permission Or Prohibition Mode34
Demand Control35
3 Step Demand Control36
Demand Control From Indoor Unit37
Silent Mode Control38
Sound Level (Reference Data) Table38
Outdoor Fan Snow Protection Control (Master Unit/Slave Unit)39
Outdoor Operation Mode39
Example Of Operation Mode Selection40
Reset Of Unmatched Condition (Cooling/Heating Unmatched)41
Emergency Stop Control42
Forced Cooling /Heating Operation (Master Unit)42
Operation And Error Signal Output (Master Unit/Slave Unit)43
External Output43
Pump Down Control For Replacement (Master Unit/Slave Unit)44
Pump-Down Operation By External Input45
Sample Of System Configuration46
Vtcc: Variable Temperature And Capacity Control (Vrf Inverter Multi-System Energy Save Control)47
Data Output49
7-Segment Display And Operation Data Retention49
7-Segment Display51
Protection Control Status55
Definition Of Signal55
Compressor Stop Causes56
Saving Of Operation Data57
Error Retention And Monitoring Data57
Outdoor Pcb Setting66
Model Selection With Sw4-1 Sw4-466
Master/Slave Setting With Sw4-7, Sw4-866
Indoor Pcb Setting67
Model Selection With Sw6-1 - Sw6-4 And Sw8-167
Basics Of Troubleshooting68
System Troubleshooting Procedure68
Explanation Of Troubleshooting69
Checking Dc15V On The Control Pcb (Step To Check If The Inverter Pcb Fails Or Not)69
Inspection Of Short-Circuit On The Power Transistor Module Terminals69
Contents Of Troubleshooting70
List Of Inspection Displays70
Troubleshooting71
Operates But Does Not Cool71
Operates But Does Not Heat72
Earth Leakage Breaker Activated73
Excessive Noise/Vibration74
Louver Motor Anomaly77
Power Supply System Anomaly (Power Supply To Indoor Unit Pcb)78
Power Supply System Error (Power Supply To Remote Control)79
Wait80
No Display86
Remote Control Communication Error87
Duplicated Indoor Unit Address88
Outdoor Unit Signal Line Error89
Communication Error During Operation90
Indoor Heat Exchanger Temperature Thermistor Anomaly (Thi-R)91
Indoor Return Air Temperature Thermistor Anomaly (Thi-A)92
Drain Trouble93
Excessive Number Of Indoor Units (More Than 17 Units) By Controlling One Remote Control94
Address Setting Error Between Master And Slave Indoor Units95
Address Setting Error By Mixed Setting Method96
Indoor Fan Motor Anomaly (Fdt, Fdtc, Fdtw, Fdts, Fdu, Fdum, Fdk, Fdut71, Fdfw Series)97
Address Setting Error Of Master And Slave Indoor Units98
Indoor Unit Operation Check, Drain Motor Check Mode Anomaly99
Indoor Fan Motor Rotation Speed Anomaly100
Defective Panel Switch Operation (Fdt)101
Remote Control Temperature Thermistor Anomaly (Thc)102
Duplicated Outdoor Unit Address No.103
Open L3 Phase On Power Supply At Primary Side104
Discharge Pipe Temperature Error (Tho-D1, D2)105
Outdoor Heat Exchanger Temperature Thermistor (Tho-R) And Subcooling Coil Temperature Thermistor (Tho-Sc,-H) Anomaly106
Outdoor Air Temperature Thermistor Anomaly (Tho-A)107
Discharge Pipe Temperature Thermistor Anomaly (Tho-D1, D2)108
High Pressure Anomaly (63H1-1, 2 Activated)109
Power Transistor Overheat110
Current Cut (Cm1, Cm2)111
Excessive Number Of Indoor Units Connected, Excessive Total Capacity Of Connection112
Liquid Flooding Anomaly (Cm1, Cm2)113
E45 Communication Error Between Inverter Pcb And Outdoor Control Pcb114
Mixed Address Setting Methods Coexistent In Same Network115
Outdoor Dc Fan Motor Anomaly116
E49 Low Pressure Anomaly118
Suction Pipe Temperature Thermistor Anomaly (Tho-S), Under-Dome Temperature Thermistor Anomaly (Tho-C1, C2)119
High Pressure Sensor Anomaly (Psh), Low Pressure Sensor Anomaly (Psl)120
Power Transistor Temperature Thermistor Anomaly (Tho-P1, P2)121
Anomalous Compressor By Loss Of Synchronism122
Compressor Startup Failure (Cm1,Cm2)123
Communications Error Between The Master Unit And Slave Units124
Emergency Stop125
Outdoor Unit Control Pcb Replacement Procedure126
Precautions For Safety126
To Exchange The Control Pcb126
Voltage Measurement Points127
Outdoor Unit Inverter Pcb Replacement Procedure128
Installation Method To Power Transistor129
Outdoor Unit Transistor Module Replacement Procedure130
To Exchange The Transistor Module130
Function Of Dip Switch For Control (Sw3, 4, 5)131
Function Of Jumper Wire (J13, 15)131
Function Of Connection132
Electircal Wiring - Models Fdc280Kxze1, 335Kxze1, Fdcs280Kxze1 335Kxze1133
Electircal Wiring - Models Fdc400Kxze1, 450Kxze1, Fdcs400Kxze1, 450Kxze1134
Electircal Wiring - Models Fdc475Kxze1, 500Kxze1, 560Kxze1, Fdcs475Kxze1, 500Kxze1, 560Kxze1135
Piping System - Models Fdc280Kxze1, 335Kxze1, Fdcs280Kxze1, 335Kxze1136
Piping System - Models Fdc400Kxze1, 450Kxze1, Fdcs400Kxze1, 450Kxze1137
Piping System - Models Fdc475Kxze1, 500Kxze1, 560Kxze1, Fdcs475Kxze1, 500Kxze1, 560Kxze1138
Application Data139
Installation Of Outdoor Unit139
Before Beginning Installation140
Acessory140
Combination Patterns140
Optional Parts140
Unit Delivery And Installation141
Selecting The Installation Location141
Installation Space (Service Space) Example141
Refrigerant Piping142
Restrictions On The Use Of Pipes142
Piping Material Selection142
Pipe Size Selection143
Selection Of An Outdoor Unit Side Branching Pipe Set144
Selection Of An Indoor Unit Side Branching Pipe Set144
Pipe Connection Position And Pipe Direction145
Piping Work146
Operation Procedure146
Air Tightness Test And Air Purge147
Vacuuming147
Additional Oil Charge147
Method Of Operating Service Valves147
Additional Refrigerant Charge148
Heating And Condensation Prevention148
Electrical Wiring Work149
Wiring System Diagrams149
Drainage149
Method Of Connecting Power Cables150
Outdoor Unit Power Supply Specifications150
Indoor Unit Power Supply Specifications: Single Phase 220-240V150
Method Of Connecting Signaling Wires151
Indoor And Outdoor Units Signal Cables151
Remote Control Wiring Specifications151
Controller Settings152
Unit Address Setting152
Summary Of Address Setting Methods153
Manual Address Setting153
Automatic Address Setting153
Address Change (Available Only With New Sl)155
Operating Procedure155
When Single Indoor Unit Is Connected To The Remote Control155
When Plural Indoor Units Are Connected To The Remote Control156
7-Segment Display Indication In Automatic Address Setting156
Address Setting Failure Indication157
Change Of Control157
External Input And Outpue Terminals Specifications158
Test Operation And Transfer159
Before Starting Test Operation159
Check Operation159
Display On 7-Segment Indicator During Check Operation159
Refrigerant Quantity Check160
Guideline Of Accuracy160
Confirmation Before Implementing The Refrigerant Quantity Check160
Error Display On 7-Segment Indicator After Ending The Check Operation160
Test Operation160
Method Of Refrigerant Quantity Check Operation161
After The Refrigerant Quantity Check Operation161
Cautions For Servicing (For R410A And Compatible Machines)162
Transfer162
The Calculation Of Reduction Refrigerant Quantity (E)163
Instructions For Installing The Branch Pipe Set164
The Branch Pipe Set Installation Procedure165
How To Select A Branching Pipe166
Method To Select A Branch Pipe Set (Type Dis)166
How To Select A Header Set166
Example 1: Branching Type Configuration167
Example 2: Header Type Configuration167
Example 3: Branching + Header Mixed Type Configuration167
Procedure To Attach Or Remove The Front Panel168
Point Of Change168
Assembly And Removal Of Front Panel168
Location Of Claws On Front Panel168