Carrier 50JC04-06 Service And Maintenance Instructions page 31

ERROR CODE FAULT DESCRIPTION
E-19 Compressor Phase Current
Foldback Timeout
E-20 Compress Power Module
Temperature Foldback Timeout
E-21
AC Input Current Foldback Timeout Reg.79|81 Bit4
E-22 DLT Temperature Timout
E-23
Auto Config Communication
Timeout
E-24 Modbus Communication Lost
E-25 DLT High Temp
E-27
Board Temperature High
E-28 Compressor Power Module
Temperature High
E-31 Comms to DSP Communication
Lost
E-33
Compressor Phase Current
Imbalance
E-35
Micro Electronic Fault
E-39 Compressor Model Configuration
Error
E-40 High Pressure Sensor Type
Configuration Error
E-41 Compressor U-Phase
OverCurrent/Sensor Fault
E-42
Compressor V-Phase
OverCurrent/Sensor Fault
E-43 Compressor W-Phase
OverCurrent/Sensor Fault
E-51 DLT Temp Sensor Open or Short
Fault
Table 9 — Converter Board Error Codes (cont)
DRIVE MODBUS REGISTER
Reg.79|81 Bit2
Reg.79|81 Bit3
Reg.79|81 Bit5
Reg.79|81 Bit6
Reg.79|81 Bit7
Reg.79|81 Bit8
Reg.79|81 Bit10
Reg.79|81 Bit11
Reg.79|81 Bit14
Reg.82|84 Bit0
Reg.82|84 Bit2
Reg.82|84 Bit6
Reg.82|84 Bit7
Reg.82|84 Bit8
Reg.82|84 Bit9
Reg.82|84 Bit10
Reg.83|85 Bit2
31
ACTION/CAUSE
Check if the compressor is operating outside the
specified speed range.
Compressor phase current  foldback protection
value (for 30 seconds).
Check if the compressor is operating outside the
specified speed range.
1. Check that the line voltage is no more than 15%
below the specified voltage for the drive.
2. Check the compress is operating within specified
limits.
3. If problem persists, replace the drive.
1. Check the DLT/Scroll Thermistor connection.
2. Check the compressor is operating within specified
limits.
Baud rate or Parity of the system controller not
matching with drive. Check whether system controller
is working, the Power Cycle the drive.
1. Check Modbus communication cable connections.
2. Check the communications parameters are set
right.
3. Power cycle the drive.
4. If problem persists. replace the drive.
1. Check the DLT/Scroll Thermistor connection.
2. Check the compressor is operating within specified
limits.
1. Verify proper airflow over the heatsink of the drive.
Remove any obstructions.
2. Check that the compressor is operating within
specified limits.
3. Check the mounting screws on the drive, make
sure they are tight.
4. If the problem still persists replace the drive.
1. Verify proper airflow over the heatsink of the drive.
Remove any obstructions.
2. Check that the compressor is operating within
specified limits.
3. Check the mounting screws on the drive, make
sure they are tight.
4. If the problem still persists replace the drive.
1. Check Modbus communication cable connections.
2. Check the communication parameters are set
right.
3. Power cycle the drive.
4. If problem persists replace the drive.
1. Verify proper airflow over the heatsink of the drive.
Remove any obstructions.
2. Check that the compressor is operating within
specified limits.
3. Check the mounting screws on the drive, make
sure that they are tight.
4. If the problem still persists replace the drive.
1. DSP self-check error, restart the drive fault should
go away.
2. If problem persists replace the drive.
1. Compressor model and configuration code do not
match.
2. Check the setting on the Digital switches
1. Pressure sensor and configuration code do not
match.
2. Check the setting on the Digital switches
1. Check the U/V/W connections on the drive side
and compressor side.
2. Check the compressor motor windings.
1. Check the U/V/W connections on the drive side
and compressor side.
2. Check the compressor motor windings.
1. Check the U/V/W connections on the drive side
and compressor side.
2. Check the compressor motor windings.
1. Check the DLT/Scroll Thermistor connection.
2. Check the compressor is operating within specified
limits.