Mitsubishi · Drives
FR-A740-00250 — FR-A700 inverter: fault codes, repair & supply
The FR-A740-00250 is a Mitsubishi FR-A700 series 400 V-class inverter, now a legacy model. Star Automations sources and supplies the FR-A740-00250 and repairs failed units at component level, so you can choose between a replacement and getting your existing unit restored. This is a discontinued OEM line. We source it from global surplus, and advance payment secures your delivery slot. Most quotes come back the same day — send the part number or the fault code on WhatsApp.
Common FR-A700 fault codes and what we usually find
Fault code wording can differ by firmware and manual revision — always confirm against the manual for your exact unit. The causes below are typical findings, not a diagnosis of your specific unit.
| Code | Meaning | Typical cause |
|---|---|---|
| E.OC1 | Overcurrent during acceleration | Short circuit, too-short acceleration, motor insulation |
| E.OC2 | Overcurrent at constant speed | Sudden load change, motor or cable fault |
| E.OC3 | Overcurrent during deceleration | Short deceleration time, load fault |
| E.OV1 | Regenerative overvoltage during acceleration | Supply surge, regenerative load |
| E.OV2 | Regenerative overvoltage at constant speed | Regenerative load, supply surge |
| E.OV3 | Regenerative overvoltage during deceleration | Short deceleration time, no braking resistor |
| E.THT | Inverter overload | Sustained overload, undersized drive |
| E.THM | Motor overload | Mechanical overload, wrong motor setting |
| E.FIN | Heat sink overheat | Blocked airflow, failed cooling fan |
| E.ILF | Input phase loss | Missing supply phase, loose terminal |
| E.LF | Output phase loss | Motor cable break, failed output stage |
| E.GF | Output-side earth fault | Motor or cable insulation failure |
| E.PE | Parameter storage element error | Failed control board memory |
| E.CPU | CPU error | Control board fault or noise |
When a FR-A740-00250 needs attention
- Inverter trips on E.OC1, E.OV or E.THT
- Fan alarm or overheating
- Display blank or inverter will not start
- Burnt smell or damaged power stage
- Trips under load
Replace or repair your FR-A740-00250
Source a replacement
Send the part number. We check sourcing from global surplus and the OEM channel and reply the same day with availability, condition and price. Advance or verified escrow applies.
Repair your existing unit
If sourcing takes longer or you want to keep your configuration, we repair at component level — power stage, gate-drive, control and supply sections — and test before dispatch.
What people look up for the FR-A740-00250
- FR-A740-00250 repair
- FR-A740-00250 price India
- Mitsubishi FR-A700 E.OC1
- Mitsubishi FR-A700 E.OV2
- Mitsubishi FR-A700 E.FIN
- FR-A700 replacement FR-A800
FR-A740-00250 — common questions
Can you supply the FR-A740-00250 in India?
Can a faulty FR-A740-00250 be repaired instead of replaced?
My FR-A740-00250 shows E.OC1 (overcurrent during acceleration). What should I do?
Is the exact part number important?
Need the FR-A740-00250 now?
Send the part number or fault code — we reply the same day. Serving Chennai, Puducherry, Bengaluru, Hyderabad, Delhi and pan-India.