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Figure 30: L4 – Malfunction of Inverter Radiating Fin Temperature Rise

OM 1141-3 • MICROTECH UNIT CONTROLLER 138 www.DaikinApplied.com

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Table of Contents

Default Chapter2
- Table of Contents2
Introduction4
- Adjusting PI Control Parameters4
Introduction5
- Getting Started5
- IFB Board6
Using the Keypad/Display7
- Passwords7
- Navigation Mode8
- Edit Mode8
- Service Timers8
- Rapid Start8
- Manual Control9
Keypad/Display Menu Structure10
Quick Menu23
View/Set Menu25
- Unit Status Settings25
- Occupancy Menu27
- Temperature Menu28
- Flow Status Menu29
- RF/EF Control Menu29
- SAF Spd Control Menu29
- Cooling Menu30
- Economizer Menu30
- Min OA Damper Menu30
- Heating Menu31
- Dehumidification Menu31
- Date, Time and Schedules Menu32
Commission Unit34
- Unit Setup34
- Timer Settings Menu34
- SAF Set-Up36
- RF/EF Set-Up39
- Heating/Cooling Changeover Set-Up40
- Cooling Set-Up41
- Inverter Compressor Set-Up42
- Economizer Set-Up45
- Min OA Set-Up Menu46
- Heating Set-Up49
- Outdoor Air Fan Set-Up51
- Expansion Valve Set-Up53
- Defrost Set-Up55
- Dehumidification Set-Up56
- Energy Recovery Set-Up57
- D3 Set-Up Menu58
Alarm Menus59
- Alarm Configuration Menu59
Manual Control Menu60
- Manual Control60
Service Menus62
- Timer Settings Menu62
- Active Alarms Menu63
- Alarm Log Menu63
- Alarm Configuration Menu63
- Analog Input Status Menu63
- Universal I/O Status Menu64
- Digital Input Status Menu64
- Digital Output Status Menu65
- Network Input Status Menu65
- Modbus Status Menu66
- D3 Status Menu66
- Sensor Offsets Menu67
BMS Communication68
- Lon/Bacnetip/Bacnetmstp Setup Menu68
- Network Unit Set-Up Menu68
Unit Configuration Setup69
- Unit Configuration Setup Menu69
Trending70
- Trending Menus70
- Points 1-8 (Fixed)70
- Points 9-24 (from List)70
- Points 25-27 (with Ids)71
- Points 28-30 (with Ids)71
Alarms72
- About this Unit72
- Alarm Clearing73
- Warnings73
- Problems73
- Faults76
Compressor Protection79
Operator's Guide82
- Determining Unit State82
- Off Operating State82
- Start up Operating State83
- Recirculating Operating State83
- Fan Only83
- Min DAT83
- Heating83
- Economizer83
- Mechanical Cooling84
- Compressor Cooling Operation State84
- Inverter Compressor Cooling Operation85
- Compressor Control Pi_Loop86
- Inverter Compressor Cooling State Descriptions87
- Normal Cooling89
- Determining Unit Status91
- Determining Control Mode91
- Determining Cooling Status92
- Determining Heat Status92
- Determining Supplemental Heat Status (Heat Pump Only)93
- Determining Economizer Status93
- Determining Cooling Capacity93
- Determining Heat Capacity93
- Determining Supplemental Heat Capacity (Heat Pump Only)93
- Determining Supply Air Fan Capacity93
- Determining RF/EF Capacity93
- Determining Outside Air Damper Position94
- Determining Emergency Mode94
- Determining Application Mode94
- Determining Occupancy Status94
- Determining Occupancy Mode95
- Determining Occupancy Source95
- Unoccupied Operation96
- Scheduling96
- Heat/Cool Changeover97
- Control Temperature98
- Dehumidification100
- Modulating HGRH Control101
- Energy Recovery101
- Outside Air Damper Control104
- Cold Start Operation104
- Airside Economizer106
- Cooling107
- Heating Control108
- Modulating108
- Gas Heating109
- Minimum Discharge Air Temperature (Min DAT)109
- Discharge Air Temperature Setpoint Reset - Heating110
- Fan Control111
- Heat Pump Control113
- Heat Pump Operating State115
Heat Pump116
- Inverter Compressor Heating State Descriptions116
- Heating off116
- Normal Heat Pump Control118
- Normal Heating118
- Pumpdown119
- Standby for Restart119
- Defrost Control120
- Defrost Operation- Heat Pump Units Only120
- Defrost Operation State120
- Way Reversing Valve Control (4WV) - Heat Pump Units Only121
- Receiver Solenoid Valve Control (SVR)121
- Bypass Solenoid Valve Control (SVB)121
Troubleshooting122
- Inverter Board Fault Codes122
- Troubleshooting Module-To-Module Communication123
- ERROR CODE: E5 - Inverter Compressor Motor Lock130
- ERROR CODE: E7 - Malfunction of Outdoor Unit Fan Motor132
- ERROR CODE: H7 - Abnormal Outdoor Fan Motor Signal134
- ERROR CODE: L1 - Defective Inverter PC Board135
- ERROR CODE: L4 - Malfunction of Inverter Radiating Fin Temperature Rise137
- ERROR CODE: L5 - Momentary Overcurrent of Inverter Compressor140
- ERROR CODE: L8 - Momentary Overcurrent of Inverter Compressor142
- ERROR CODE: L9 - Inverter Compressor Starting Failure144
- ERROR CODE: P1 - Inverter Over-Ripple Protection146
- ERROR CODE: P4 - Malfunction of Inverter Radiating Fin Temperature Rise Sensor148
- ERROR CODE: PJ - Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board151
- ERROR CODE: U2 - Power Supply Insufficient or Instantaneous Failure152
Appendix154
- Supply Fan Failure Codes154
- Trending Selection Lists157

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