Failure Message Overview
Error
Number Failure Failure Name Explanation
311 Err GF Ground fault Output overcurrent to ground.
1. Check the motor cable and motor for ground faults.
2. Disconnect the motor cable and try again. If you still have the
error, replace the inverter.
312 Err OHT* Ext thermal relay External thermal relay (TRM module, see electrical scheme) for
motor protection tripped. TRM module was only used on certain
machines with MCB controller and A500 inverter.
313 Err OPT Option Refer to Failure 313-315: OPT/PUE-Error (OPTION FAULT/
PARAMETER UNIT LEAVE OUT).
314 Err PE Corrupt memory Memory was overwritten too many times. Replace inverter.
315 Err PUE PU leave out Refer to Failure 313-315: OPT/PUE-Error (OPTION FAULT/
PARAMETER UNIT LEAVE OUT).
316 Err Ret* Retry no over The max number of retries after fault reached.
The actual inverter error code that causes the problem and
which should be solved, is stored just before Err 316 in the er-
ror log.
317 Err CPU CPU Fault Communication error of built in CPU. Replace inverter.
318 Err E.6 CPU Fault 6 Internal fault, if the fault is persistent, replace the inverter.
319 Err E.7 CPU Fault 7 Internal fault, if the fault is persistent, replace the inverter.
320 Err IPF Instantaneous power failure Power failure between 15 and 100ms. Check for bad contacts in
the power circuit. Repair the power supply.
321 Err UVT Under voltage Supply voltage too low. Check jumper P/+-P1.
322 Err LF Output phase failure Phase open detected on inverter output. Check for bad contacts or
defect (open) motor windings.
323 Err OP1* Option slot 1 Problem with the option in slot 1 or option contact fault.
324 Err OP2* Option slot 2 Problem with the option in slot 2 or option contact fault.
325 Err OP3* Option slot 3 Problem with the option in slot 3 or option contact fault.
326 Err CTE PU short circuit Short circuit on the RS485 communication connector. Check for
short circuit in the communication cable.
327 Err P24 24VDC short circuit Short circuit on the 24VDC power output (PC terminal). Check
for short circuit on the inverter control terminals.
Table 95 continues...
Troubleshooting
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104 Part No. D1676ENR11
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