Model 4700 Maintenance Manual
Section 6. Messages and Codes Fault Codes
Refer to the “Pinout Matrix” located in Theory of Operation section for all voltage and resistance values and component interconnection. Code
Description
Notes/Corrective Action
01
Code 01: Master TPA Internal Fault The power amplifier has detected an internal fault.
Check voltage to TPA. If OK, replace the TPA. Check communication wires between all modules for continuity and shorts to frame.
02
Code 02: Master TPA Internal Fault Fault in the area of memory in which the adjustment parameters are stored.
If code does not clear by cycling key, replace the TPA. If code clears, the adjustable parameters have been reset to default values and require resetting to customer’s requirements via FlashWare.
03
Code 03: Master TPA Internal Fault The power amplifier has detected an internal fault.
Check voltage to TPA. If OK, replace the TPA.
04
Code 04: Master TPA Internal Fault The power amplifier has detected an internal fault.
Check motor cables for continuity. Check motor cable connections for correct torque. Compare current from all 3 phases. If one phase is significantly higher or lower than the other two, replace the motor. If OK, replace the TPA.
05
Code 05: Battery Sense Out-of-Range/Master TPA The TPA monitors battery voltage at B+Key. If voltage does not match configured voltage or is below set threshold, the code is displayed. The TPA also monitors the voltage on its internal capacitors. If voltage goes above 63VDC, the code is displayed.
Verify battery voltage. If wrong voltage, set correct voltage via FlashWare (and relearn pots) or install correct voltage battery. If battery is correct but voltage is >63VDC, replace battery. Test power cables to the motor for shorts to frame and other cables. Test the motor for shorts to frame. Resistance must be >1 Meg ohm. If OK, replace the TPA.
06
Code 06: Short in Master TPA When the Key switch is turned ON, the TPA momentarily powers each motor phase and monitors current. If current is seen when it should not be, this code is displayed.
Measure voltage and resistance across coil. Check cables to the motor and TPA for continuity and correct torque. Swap the connections from the TPA to the other traction motor using appropriately sized jumper cables and turn the Key switch ON. If code changes, replace the motor. If the code is still displayed, replace the TPA.
07
Code 07: Open in Master TPA When the Key switch is turned ON, the TPA monitors each motor phase for current draw. If current is not seen when it should be, this code is displayed.
Check voltage to the TPA. Check cables to the motor and TPA for continuity and correct torque. Swap the connections from the PPA and pump motor with the TPA and traction motor using appropriately sized jumper cables and turn the Key switch ON. If code changes, replace the motor. If the code is still displayed, replace the TPA.
Publication 1160093, Issued: 20 May 2013
6-9
