Table Of Contents - Carrier 38MGR Series Service Manual

Table of Contents

Table Of Contents1
Safety Considerations1
Introduction1
Model / Serial Number Nomenclatures2
Unit Sizes2
Specifications3
Dimensions4
Size 24K5
Size 30K5
Size 36K6
Size 48K7
Clearances8
Clearances For Multiple Units8
Electrical Data9
Wiring9
Connection Diagrams10
Size 18K 2 Zone10
Size 24K 3 Zone10
Size 30K 4 Zone11
Size 36K 4 Zone11
Size 48K 5 Zone12
Automatic Wiring/Piping Correction13
Wiring Diagrams14
Size 18K14
36K - 4 Zone Max19
Wiring Diagram 48K - 5 Zone Max20
48K - 5 Zone Max21
Refrigeration Cycle Diagrams22
Refrigerant Lines24
General Refrigerant Line Sizing24
Piping And Refrigerant24
Additional Charge Table Per Zone24
System Evacuation And Charging25
System Vacuum And Charge25
Using Vacuum Pump25
Deep Vacuum Method25
Electronic Function26
Electric Control Working Environment26
Main Protection26
Compressor Current Limit Protection26
High Condenser Coil Temperature Protection27
Outdoor Unit Anti-Freezing Protection27
Oil Return27
Low Outdoor Ambient Temperature Protection27
Controls And Functions27
Heating Mode28
Defrosting Control28
Defrosting Conditions28
Defrosting Actions28
End Defrosting Action29
Outdoor Fan Control29
Cooling Mode29
Electronic Expansion Valve (Exv) Control29
Four-Way Valve Control30
Troubleshooting31
Outdoor Unit Digital Display31
Diagnostic Guides31
Outdoor Unit Point Function32
Diagnosis And Solution34
Indoor Fan Speed Has Been Out Of Control (E0/E4)34
Indoor Units Mode Conflict (P5)35
Eeprom Parameter Error (Eo/E4)36
Eeprom Chip36
Communication Malfunction Between The Indoor And Outdoor Units (E2/E1)37
Test The Dc Voltage38
Ipm (For Dual/Tri-Zone)38
Ipm For Four Or Five Zone39
Main Board39
Zero Crossing Detection Error Diagnosis And Solution (E2)40
Ipm Board (For 2-Zone/3-Zone)45
Bridge Rectifier (For 2-Zone/3-Zone)45
Bridge Rectifier (For 2-Zone/3-Zone) And Ipm Module46
Ipm Board (For 4-Zone)46
Bridge Rectifier (For 5-Zone)47
Ipm Module (For 5 - Zone)47
Pfc Module Protection Error Diagnosis And Solution (E6)48
Inductance49
Outdoor Fan Speed Has Been Out Of Control (E8)50
Dc Fan Motor (Control Chip Is Inside Fan Motor)51
Test The Voltage51
Temperature Protection Of Compressor Top) Error (Po)52
High Pressure Protection Error (P1)54
Low Pressure Protection Error (P2)56
Current Protection Of Compressor Error (P3)58
Temperature Protection Of Compressor Discharge Error (P4)60
High Temperature Protection Of Condenser Error (P5)61
Ipm Module Protection Error (P6)62
Temperature Sensor Resistance Value (C-K)64
Appendices64
Unit C Discharge Temperature Sensor65
Compressor Check66
Measure The Resistance66
Ipm Continuity Check67
Ac Fan Motor67
Resistance Value67
4-Way Valve68
Exv Check69
Disconnect The Connectors69
Resistance To Exv Coil69
Disassembly Instructions Size 1872
How To Remove The Reactor78
How To Remove The 4-Way Valve78
How To Remove The Expansion Valve79
How To Remove The Panel Plate80
Disassembly Instructions Size 2480
How To Remove The Fan Assembly83
How To Remove The Electrical Parts84
How To Remove The Compressor86
Disassembly Instructions Size 3089
Disassembly Instructions Sizes 36 And 4896