Schneider ATV212 Drive Fault Codes

Complete reference list of Schneider Altivar 212 (ATV212) fault codes. Learn to troubleshoot HVAC errors like OPF (Output Phase Loss), OHF, and Err5 (Comm Fault).

Schneider ATV212 Fault Codes Reference Table

Schneider ATV212 Fault Codes Reference Table

Schneider ATV212 Fault Codes Reference Table

Type a fault code or keyword to filter the list:

Fault Code and Meaning Cause and Remedy
CApF

[Cavitation Error]		 Cause:
Loss of speed due to overload or / and too much torque.

Remedy:
  • Reduce the load.
CFl2

[Download transfer fault]		 Cause:
Invalid configuration. The configuration loaded in the drive via the bus or communication network is inconsistent.
Transfer using PC soft has not been successful due to rating differences.

Remedy:
  • Check the configuration loaded previously.
  • Load a compatible configuration.
  • To perform download, uncheck "Display communication error".
E-18

[VIA signal fault]		 Cause:
The VIA analog signal is below the level set by parameter F633.

Remedy:
  • Check the signal at VIA and rectify the cause of the signal loss.
  • Verify that parameter F633 is set correctly.
E-19

[CPU communications err.]		 Cause:
Communication error between control CPUs.

Remedy:
  • Check the environment (electromagnetic Compatibility).
  • Turn off and restart product.
  • Contact Schneider electric product support.
E-20

[Excess torque boost flt]		 Cause:
Torque boost parameter [Auto Torque Boost] (F402) is set too high.
The motor impedance is too low.
During deceleration when [Mot cont. mode sel.] = [Quadr. U/F] with specific stop/load/deceleration conditions.

Remedy:
  • Repeat the Auto-tuning drive and reduce [Auto Torque Boost] (F402).
  • Set [Auto ramp] (AU1) = (0) [Disabled].
  • Decrease the deceleration ramp with [Deceleration time 2] (F501) and [Commut. ramp freq.] (F505).
E-21

[CPU error 2 fault]		 Cause:
The control board CPU is inoperable.

Remedy:
  • Contact Schneider Electric to repair the drive.
E-38

[EEprom pwr incompat.]		 Cause:
Eeprom power incompatible.
Product hardware detected fault.

Remedy:
  • Contact Schneider Electric to repair the drive.
E-39

[InitPos Det]		 Cause:
An Error is detected at the starting: The measured current at initial position detection is too small or large according to the inductance of motor or output phase loss.

Remedy:
  • Check the motor phases and the maximum current allowed by the drive.
  • To check that the inductance of motor is too small or too large.
EEP1

[EEPROM error 1 fault]		 Cause:
A data writing error has occurred.

Remedy:
  • Cycle power to clear the detected fault.
EEP2

[EEPROM error 2 fault]		 Cause:
Power was removed from the drive during a parameter reset operation resulting in a data writing error.
The measured current at initial position detection at the auto-tuning is too small or large.

Remedy:
  • Cycle power to clear the detected fault and try the parameter reset operation again.
  • If the detected fault does not clear, contact Schneider Electric to repair the drive.
EEP3

[EEPROM error 3 fault]		 Cause:
A data reading error has occurred.

Remedy:
  • Cycle power to clear the detected fault.
EF2

[Ground fault]		 Cause:
Ground fault in motor or motor cables.

Remedy:
  • Check the motor and motor cables for ground faults.
EPH0

[Output phase loss fault]		 Cause:
Loss of one or more output phases.

Remedy:
  • Determine the cause of the missing output phase (such as a bad connection, an output disconnect, or an open winding in the motor) and clear it.
  • Check parameter F605.
EPH1

[Input phase loss fault]		 Cause:
Loss of one input phase.

Remedy:
  • Determine the cause of the missing input phase and clear it.
  • Check parameter F608.
EPtF

[Threshold Error]		 Cause:
Condition for overheating reached, exceeded Threshold F353.

Remedy:
  • Check the system.
Err1

[Speed ref. error fault]		 Cause:
Parameters F202, F203, F210, or F212 are set improperly.

Remedy:
  • Set the parameters to the correct settings.
Err2

[RAM fault]		 Cause:
The control board RAM is inoperable.

Remedy:
  • Contact Schneider Electric to repair the drive.
Err3

[ROM fault]		 Cause:
The control board ROM is inoperable.

Remedy:
  • Contact Schneider Electric to repair the drive.
Err4

[CPU fault 1]		 Cause:
The control board CPU is inoperable.

Remedy:
  • Contact Schneider Electric to repair the drive.
Err5

[Com RJ45 fault]		 Cause:
Serial communication error.

Remedy:
  • Check network control devices and cables.
  • Check the setting of the communication timeout parameter, F803.
  • Check the remote graphic display option cable.
  • Check the setting of F829 parameters.
Err7

[Current sensor fault]		 Cause:
A motor current sensor is inoperable.

Remedy:
  • Replace the drive.
Err8

[Network error fault]		 Cause:
Network communication error.

Remedy:
  • Check the network control devices and cables.
Err9

[Remote keypad fault]		 Cause:
Graphic display option cable disconnected.

Remedy:
  • Check the RJ45 cable.
Etn1

[Auto-tuning fault]		 Cause:
Parameters F401 to F494 are incorrectly set.
The motor is too large for the drive or cable gauge is too small.
The motor is still rotating at the start of the auto-tune.
The drive is not powering a 3-phase induction motor.
Measured current at initial position detection is too small or large.

Remedy:
  • Set parameters F401–F494 correctly.
  • Use a larger drive or larger motor cable.
  • Verify that the motor is stopped before starting an auto-tune.
  • Use the drive to power only a 3-phase induction motor.
EtYP

[Drive fault]		 Cause:
The main control board is inoperable.

Remedy:
  • Set parameter [Parameter reset] (tYP) to 6.
  • If this does not clear the detected error, replace the drive.
Fd1

[Closed damper 1 fault]		 Cause:
Damper is locked in closed position.

Remedy:
  • Set [Damper flt behavior] (F583) to 0.
  • Check the FL relay connection.
  • Check the relay configuration (F130/F132).
Fd2

[Closed damper 2 fault]		 Cause:
Damper blocked open or soldered.

Remedy:
  • Set [Damper fdb type] (F580) to 0 or 1. Check the FL relay connection.
  • Check the relay configuration (F130/F132).
nO20

[Total input power]		 Cause:
The accumulated input power value is more than 999.999 kWh.

Remedy:
  • Clear the accumulated input power value using logic input function 51, or parameter F748.
OC1

[Overcurrent acceleration]		 Cause:
The acceleration time is too short.
The setting of parameter [Mot cont. mode sel.] is incorrect.
The drive is starting into a rotating load.
The drive is powering a low impedance motor.
Ground fault.

Remedy:
  • Increase the acceleration time parameters (ACC or F500).
  • Select the correct setting for parameter [Mot cont. mode sel.].
  • Enable catch on the fly, parameter F301.
  • Adjust the switching frequency parameter F300.
  • Set parameter F316 to 1 or 3.
OC1P

[SC or ground fault acc.]		 Cause:
Short circuit or ground fault during acceleration.

Remedy:
  • Using a 1000 V testing tool megger, check the motor and motor cables for ground faults.
OC2

[Overcurrent deceleration]		 Cause:
The deceleration time is too short.
Ground fault.

Remedy:
  • Increase the deceleration time parameters (dEC or F501).
  • Set parameter F316 to 1 or 3.
OC2P

[SC or ground fault dec.]		 Cause:
Short circuit or ground fault during deceleration.

Remedy:
  • Using a 1000 V megger, check the motor and motor cables for ground faults.
OC3

[Overcurrent cont. speed]		 Cause:
Abrupt fluctuations in load.
Abnormal load condition.

Remedy:
  • Reduce the load fluctuations.
  • Check the load.
  • Set parameter F316 to 1 or 3.
OC3P

[SC/ground flt cont. spd]		 Cause:
Short circuit or ground fault during constant speed operation.
The drive cooling fan is not working.

Remedy:
  • Using a 1000 V megger, check the motor and motor cables for ground faults.
  • Check the fan operation.
OCA

[SC inverter at start]		 Cause:
Ground fault.

Remedy:
  • Using a 1000 V megger, check the motor and motor cables for ground faults.
OCL

[SC mot. cable at start]		 Cause:
Phase to phase output short circuit.
The motor impedance is too low.

Remedy:
  • Using a 1000 V megger, check the motor and motor cables for ground faults.
OH

[Drive overtemperature]		 Cause:
The drive cooling fan is not working.
The ambient temperature is too high.
An enclosure air vent is blocked.
A heat source is too close to the drive.
The drive heatsink temperature sensor is malfunctioning.

Remedy:
  • Restart operation by resetting the drive detected fault after cool-off.
  • Decrease the ambient temperature by increasing the free space around the drive and removing any heat generating source.
  • Check the fan operation.
OH2

[PTC overheating]		 Cause:
The external PTC embedded in the motor windings indicates a motor overtemperature condition.

Remedy:
  • Correct the motor overload condition.
  • Check the PTC for correct operation.
OL1

[Drive overload]		 Cause:
The acceleration time is too short.
The DC injection current level is too high.
The setting of parameter [Mot cont. mode sel.] is incorrect.
The drive is starting into a rotating load.
The load is too large.

Remedy:
  • Increase the acceleration time parameters (ACC or F500).
  • Reduce the setting of parameters F251 and/or F252.
  • Select the correct setting for parameter [Mot cont. mode sel.].
  • Enable catch on the fly, parameter F301.
  • Set parameter F302 to 2.
  • Use a drive with a higher power rating.
OL2

[Motor overload]		 Cause:
The setting of parameter [Mot cont. mode sel.] is incorrect.
The motor is jammed.
Low-speed operation is performed continuously.
Excessive load is applied to the motor.

Remedy:
  • Select the correct setting for parameter [Mot cont. mode sel.].
  • Check the load.
  • Adjust parameter OLM to the overload level that the motor can withstand during low speed operation.
OP1

[Overvoltage acceleration]		 Cause:
The input voltage is fluctuating abnormally.
Power network is greater than 200 kVA.
Power factor capacitor switching.
SCR switching on power network.
The drive is starting into a rotating load.
Intermittent output phase fault.

Remedy:
  • Install a line reactor.
  • Enable catch on the fly, parameter F301.
  • Set parameter F302 to 2.
  • Determine the cause of the missing output phase and rectify the trouble.
OP2

[Overvolt. deceleration]		 Cause:
The deceleration time is too short.
Overhauling load.
The input voltage is fluctuating abnormally.
Power network is greater than 200 kVA.
Power factor capacitor switching.
The drive is starting into a rotating load.

Remedy:
  • Increase the deceleration time parameters (DEC or F501).
  • Enable parameter F305.
  • Install a line reactor.
  • Check the input and output circuits for phase loss detection and rectify.
  • Enable catch on the fly, parameter F301.
OP3

[Overvoltage cont. speed]		 Cause:
  • The input voltage is fluctuating abnormally.
  • Power network is greater than 200 kVA.
  • Power factor capacitor switching.
  • SCR switching on power network.
  • The drive is regenerating - the load causes the motor to run at a frequency higher than drive output frequency.
  • Intermittent output phase fault.

Remedy:
  • Install a line reactor.
  • Check the input and output circuits for phase loss detection and rectify.
Ot

[Overtorque]		 Cause:
  • The calculated motor torque has reached the level set by parameter F616.

Remedy:
  • Adjust the settings of parameters F615 and F616 as needed.
  • Verify machine operation.
pSrF

[Prst Spd Error]		 Cause:
  • Prestart speed not reached.
  • The load is too high.

Remedy:
  • Reduce the load.
SOUt

[PM motor step-out]
(permanent magnet motor pulls out of synchronism)		 Cause:
  • The motor is jammed.
  • Output phase loss.
  • Impact load.

Remedy:
  • Check the load and correct the jammed condition.
  • Check the condition of the motor and load wiring.
UC

[Underload]		 Cause:
  • The measured motor current has dropped below the level set by parameter F611.

Remedy:
  • Check parameters F610–612 for the correct settings.
UPI

[Undervoltage]		 Cause:
  • The input voltage is too low.

Remedy:
  • Check the input voltage and rectify the trouble.
  • Select the correct setting for parameter F627.
  • Enable catch on the fly, parameter F301.
  • Set parameter F302 to 2.
Atn1

[Auto tune]		 Cause:
  • Auto-tuning in process.

Remedy:
  • Normal if the message disappears after a few seconds.
CLr

[Reset active]		 Cause:
  • This message is displayed after the STOP key is pressed while a detected fault is displayed.

Remedy:
  • Press the STOP key again to clear the detected fault.
db

[DC braking]		 Cause:
  • DC braking in process.

Remedy:
  • The alarm code goes off in several seconds if no trouble occurs.
dbOn

[dbOn]		 Cause:
  • DC braking in process, when [Crankcase heating] (F355) is activated.

Remedy:
  • Normal behavior (if [Crankcase heating] F355 is activated, and the motor is stopped).
E-17

[HMI error]		 Cause:
  • A graphic display option key has been held down for more than 20 seconds.
  • A graphic display option key may not be operating properly.

Remedy:
  • Release the graphic display option key.
  • If this does not clear the error, replace the drive.
EI

[Excess value]		 Cause:
  • The number of digits entered for values such as frequencies is more than 4 (the upper digits have priority).

Remedy:
  • Lower the frequency free-unit magnification [Customized freq val] (F702).
EOFF

[Loc. Stop en.]		 Cause:
  • The operation panel is used to stop the operation in automatic control or remote control mode.

Remedy:
  • Press the STOP key for an emergency stop. To cancel the emergency stop, press any other key.
Err1

[Speed ref alarm]		 Cause:
  • The frequency setting signals at points 1 and 2 are set too close to each other.

Remedy:
  • Set the frequency setting signals at points 1 and 2 apart from each other.
h999

[Pin&1MWh] Integral input power		 Cause:
  • Integral input power is more than 999.99 kWh.

Remedy:
  • Press and hold down the ENT key for 3s or more when power is off or when the input terminal function CKWH is turned on or displayed.
H999

[Pout&1MWh] Integral output power		 Cause:
  • Integral output power is more than 999.99 kWh.

Remedy:
  • Press and hold down the ENT key for 3s or more when power is off or when the input terminal function CKWH is turned on or displayed.
HEAd / End

[Head] / [End]		 Cause:
  • The first and last data item in the data group is displayed.

Remedy:
  • Press MODE key to exit the data group.
HI / LO

[High] / [Low] Parameter adjustment error		 Cause:
  • During programming, a value was entered that exceeds the maximum or minimum value of the parameter.

Remedy:
  • Enter a value within the bounds of the parameter.
InIt

[Initialization]		 Cause:
  • Parameters are being initialized to default values.

Remedy:
  • Normal if the message disappears after several seconds.
LStP

[Low speed stop] Auto-stop		 Cause:
  • The automatic stop function selected with F256 was activated.

Remedy:
  • To deactivate the automatic stop function, increase the frequency command above the lower-limit frequency LL+F391 or turn off the operation command.
NOFF

[Line undervolt flt]		 Cause:
  • The phase-to-phase input voltage is too low.

Remedy:
  • Measure the main circuit supply voltage. If the voltage is at a normal level, the drive requires repair.
OFF

[Drive stop]		 Cause:
  • The ST-CC (run permissive) circuit is open.

Remedy:
  • Close the ST-CC circuit.
nSt

[Lock State]		 Cause:
  • The Li is already active when the function is validated.
  • The Li is already active when a configuration transfer is done with the function is validated.

Remedy:
  • Deactivate the active Li configured.
rtrY

[Auto reset]		 Cause:
  • The drive is in the process of restart.
  • A momentary stop occurred.

Remedy:
  • The drive is operating normally if it restarts after several seconds.
StOp

[Stop supply] Momentary power loss slowdown stop		 Cause:
  • The slowdown stop prohibition function set with F302 (momentary power loss ride-through operation) is activated.

Remedy:
  • To restart operation, reset the drive or input an operation signal again.
C

[Current alarm]		 Cause:
  • The drive is at current limit.

Remedy:
  • For more information, refer to parameter F601 and F185.
P

[DC bus alarm]		 Cause:
  • The drive is approaching an overvoltage detected fault due to a high supply line, regenerative motor braking, or a combination of these.

Remedy:
  • For more information, refer to parameters F305 and F626.
L

[Motor overload al]		 Cause:
  • The motor overload timer has reached or exceeded 50% of its detected fault level.

Remedy:
  • Check motor load and operating conditions.
H

[Drv overheat alrm]		 Cause:
  • The drive is approaching an overheating fault detection.

Remedy:
  • Check drive cooling and environment.
 

Troubleshooting ATV212: HVAC Specifics

The ATV212 interface relies on a 4-digit 7-segment LED display. Troubleshooting often requires distinguishing between motor faults and external control issues.

  • OPF (Output Phase Loss): This is the most common fault in HVAC. It typically occurs when a maintenance technician opens the Local Disconnect Switch at the motor while the drive is still running. The drive senses the open circuit and trips to protect itself.
  • Communication Errors (Err5/Err8): Since ATV212s are usually connected to a BMS (Building Management System), these codes indicate a loss of data traffic. Check your RS485 wiring, termination resistors, and baud rate settings in the COM menu.
  • Fault History (F8-00): You can access the last 4 faults via the parameter list.
    • F800: Most recent fault.
    • F801: 2nd most recent fault.
    • F802: 3rd most recent fault.

Frequently Asked Questions (FAQ)

Q: What causes “OPF” (Output Phase Loss)?

A:
1. Disconnect Switch: Someone turned off the isolator switch near the motor while the VFD was running.
2. Broken Belt: If the motor is running with no load (belt snapped), the current drops so low the drive thinks the motor is disconnected (if “Output Phase Loss” sensitivity is set high).
3. Loose Wire: Check the T1/T2/T3 terminals.

Q: How do I reset the ATV212?

A:
1. Power Cycle: Turn off main power, wait for the screen to go black, turn on.
2. Stop/Reset: Press the red STOP/RESET button (if enabled in parameters).
3. Logic Input: Trigger the input assigned to “Fault Reset” (RES).

Q: The drive shows “OFF” and won’t start. Is it broken?

A: No. OFF indicates a “Hard Stop” condition.
This happens if the Safety Input (P24 to VIA jumper) is removed, or if a specific Logic Input assigned to “External Fault” is active. Check your safety interlocks and freeze-stats.

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