Error description 237-13020

Error message

13020 UM: Readiness was lost %1 (info = %4)

Cause of error

- UM inverter or UEC compact inverter was switched off during operation
- Reason for lack of inverter readiness:
(information is shown decimally. Please interpret as binary)
- Bit 0: "STO.A.P.x"
- Bit 1: "STO.B.H.P.x"
- Bit 2: "STO.B.L.P.x"
- Bit 3: Signal for PWM release not set
- Bit 4: Error in switch-on test

Error correction

- Check the entry in MP_delayTimeSTOatSS1 and increase the value if necessary (the parameterized time here must be greater than the value in MP_vCtrlSwitchOffDelay)
- Inform your service agency
- Exchange the power module if necessary