CLB (Over Current Protection Level B): This error occurs when the inverter current reaches the current protection level B. Causes can include a high inverter current or a heavy load. Solutions: Check the load and operation duty cycle.

Retry (Automatic Reset): This is not an error but an indication that the automatic reset has activated and is displayed before the period of automatic reset (parameter 07-01) terminates. It will disappear after the period of automatic reset.

EF1, EF2, EF3 (External Faults): These errors occur when an external fault is active on terminals S1, S2, and S3, respectively. They are active when the corresponding parameters (03-00 for EF1, 03-01 for EF2, 03-02 for EF3) are set to 25, and the inverter external fault selection (parameter 08-24) is set to 2. Causes: An active multifunction digital input external fault and an incorrectly set multi-function input function. Solution: Check the wiring and ensure the multi-function input function is set correctly.

SE01 (Range setting error): This error indicates that a parameter setting is outside the allowed range. This can occur if:

    The parameter ranges are determined by other inverter parameters, and an out-of-range warning is triggered when the dependency parameter is adjusted. For example, if 02-00 > 02-01, 00-12 < 00-13, or when 00-07 = 1, 00-05 is the same as 00-06, or 20-16 <= 20-15.
    To resolve this: Check the parameter settings and ensure they are within the allowed range. Adjust any parameters that are outside the allowed range to fall within the acceptable limits.

SE02 (Digital input terminal error): This error occurs due to a multi-function input setting error. The possible causes are:

    Multi-function digital input terminals (03-00 to 03-07) are set to the same function (excluding external fault and not used), or 1UP/DOWN commands are not set at the same time (they must be used together).
    2UP/DOWN commands (08 and 09) and ACC/DEC commands (11) are set simultaneously.
    3Speed search 1 (19, maximum frequency) and Speed search 2 (34, from the set frequency) are set at the same time.

SE03 (V/f curve error): This error occurs when the V/f curve settings are incorrect. The settings should follow the order: 01-02 (Fmax) > 01-12 (Fbase) > 01-06 (Fmid1) > 01-08 (Fmin) and 201-16 (Fmax2) > 01-24 (Fbase2) > 01-20 (Fmid1) > 01-22 (Fmin2). Check and correct the V/F parameters.

SE05 (PID selection error): This error occurs when PID settings are conflicting. Ensure that parameters 10-00 and 10-01 are not set to 1 (AI1) or 2 (AI2) simultaneously, and check the values of parameters 10-33, 10-34, and 23-05 for proper settings.

HPErr (Model selection error): This error indicates that the inverter capacity setting (parameter 13-00) does not match the rated voltage. Check and correct the inverter capacity setting.

SE09 (PI setting error): This error occurs when there is a conflict between the inverter pulse input selection (03-30) and the PID source (10-00 and 10-01). Check and correct the pulse input selection and PID source settings.

FB (PID feedback breaking): This warning indicates that the PID feedback signal has fallen below the level specified in parameter 10-12 (PID feedback loss detection level) for the time specified in parameter 10-13 (Feedback loss detection time). Check the feedback wiring and replace the feedback sensor if necessary.

USP (Unattended Start Protection): This warning occurs when the Unattended Start Protection (USP) is enabled at power-up. The inverter will not accept a run command while this warning is active. Remove the run command or reset the inverter via a multi-function digital input or the RESET key on the keypad.

LFPB (Low flow error): This error occurs when the HVAC feedback value is lower than the limit of minimum flow. Check that the feedback signal is correctly connected and that the feedback value is not below the minimum flow limit.

HFPB (High flow error): This error occurs when the HVAC feedback value is higher than the limit of maximum flow. Check that the feedback signal is correctly connected and that the feedback value is not above the maximum flow limit.

LPBFT (Low Pressure Error): This error occurs when the feedback signal is not connected or the feedback value of pump pressure is lower than the minimum flow limit. To resolve this, check the feedback signal connection and ensure the feedback value of pressure is not lower than the minimum pressure limit.

OPBFT (High Pressure Error): This error is triggered when the feedback value of pump pressure is lower than the maximum flow limit. To correct this, verify the feedback signal is correct and ensure the feedback value of pressure is not lower than the maximum pressure limit.

LSCFT (Low Suction Error): This error indicates inadequate suction, which can be caused by insufficient water in the supply tank or if the PID difference is higher than its level or the current is lower than the output current level. Check if the water supply is sufficient and regular, and verify the PID difference and current levels.

FIRE (Fire Override Mode): This is not an error but a mode indicating that the fire override function is active.

SE10 (PUMP/HVAC Setting Error): This error occurs if the PUMP selection of the inverter (parameters 23-02 and 23-03) or the HVAC selection (parameters 23-46 and 23-47) is incorrect. Check and adjust these parameter settings as needed.

COPUP (PUMP Communication Breaking Error): This error signifies a communication break or disconnection in pump cascade control. Check for any setting issues or improper connections.

ParEr Parameter Setting Error: This error occurs when there is an issue with parameter settings. Refer to the instruction manual or check if the parameter is selected to be disabled.

StP1 Warning of Direct Start: This warning appears when the inverter cannot start directly because the digital input terminal (S1~S6) is set to run while parameter 07-04 is set to 1. To resolve this, check the digital input terminal, disconnect it, and then reconnect it after the setting delay time (parameter 07-05) ends.

AdCer ADC Voltage Error: This error indicates an abnormal voltage level on the control board. Possible causes include abnormal input voltage, excessive noise, or a malfunctioning control board. To troubleshoot, check the input voltage signal and the voltage on the control board.

EPErr EEPROM Archiving Error: This error signifies poor archiving in the EEPROM. It usually occurs during the parameter check at inverter boot and may be due to a poor peripheral circuit in the EEPROM. To resolve this, try reconnecting and if the warning signal appears again, replace the circuit board. For further assistance, contact TECO.

bdErr Control Board Error: This error indicates that the control board is not corresponding with the program. The solution is to replace the control board.