| Code | Fault | Meaning |
|---|
| MDI-PRC 1 | Wrong Config | It occurs the first time a controller is switched on when the non volatile eeprom memory is not initialized ye… |
| MDI-PRC 8 | Watch Dog | It occurs when the embedded WATCH DOG protection is not able either to cut off the power stage when not trigge… |
| MDI-PRC 13 | EEPROM KO | It occurs due to a HW or SW defect of the non-volatile embedded memory supporting the controller regulations.… |
| MDI-PRC 16 | Aux Output KO | This alarm occurs when the feedforward PWM generated by the controller to supply the Electromechanical Brake a… |
| MDI-PRC 17 | Logic Failure #3 | It occurs when the circuit to limit via HW the current peak in the controller is active.… |
| MDI-PRC 18 | Logic Failure #2 | It occurs when the circuit, to compensate for the dead times of the sine waves, is failed.… |
| MDI-PRC 19 | Logic Failure #1 | This alarm signals that an overvoltage / undervoltage protection operation has occurred.… |
| MDI-PRC 30 | VMN Low | Before to switch the main contactor on, the SW turns on sequence the Top side Power Mosfets and expects the ph… |
| MDI-PRC 31 | VMN High | Before to switch the main contactor on, the SW turns on sequence the Bottom side Power Mosfets and expects the… |
| MDI-PRC 37 | Contactor Closed | The controller checks if the MC contact is closed when the coil isn’t driven, trying to discharge the capacito… |
| MDI-PRC 38 | Contactor Open | The main contactor coil has been driven by the logic board, but the contactor does not close.… |
| MDI-PRC 53 | STBY I High | This diagnosis is executed only when the main contactor is opened and asked to be closed (e.g. at key on or wh… |
| MDI-PRC 60 | Capacitor Charge | In working condition, a resistance connected between the key and the Rail Capacitors, keeps the Rail Capacitor… |
| MDI-PRC 61 | High Temperature | This alarm occurs when the temperature of the base plate is higher than 78 °C. Then the maximum current decrea… |
| MDI-PRC 65 | Motor Temperature | This is just a warning with no effect on the truck performance. It occurs when the temperature of the motor wi… |
| MDI-PRC 67 | CAN Bus KO | It occurs if the controller does not receive any message from the CAN Bus line.… |
| MDI-PRC 70 | Encoder Error | Two consecutive readings of the encoder speed are too much different in between: because of the inertiality of… |
| MDI-PRC 73 | Thermic Sens KO | When the output of the thermal sensor on the base plate is higher than 4.95 V or lower than 0.1 V, the sensor … |
| MDI-PRC 74 | Driver Shorted | This alarm occurs when the voltage on the Main Contactor is higher than expected: this means that the Main Con… |
| MDI-PRC 75 | Contactor Driver | This alarm occurs when the voltage on the Main Contactor is smaller than expected: this means that the Main Co… |
| MDI-PRC 76 | Coil Shorted | This alarm occurs when there is an overload on one of the following connections: CNA#1, CNA#3, CNA#4 and CNA#6… |
| MDI-PRC 78 | VACC Not OK | The test is made at key-on and after 20 sec that both the travel demands have turned disactive. This alarm occ… |
| MDI-PRC 79 | Incorrect Start | This is just a warning for an incorrect starting sequence.… |
| MDI-PRC 86 | Pedal Wire KO | The SW continuously checks for the connection of the two supply ends of the potentiometer in the accelerator. … |
| MDI-PRC 93 | Wrong Set Batt | When the key is turned ON, the controller check the battery voltage and verifies it is within a window around … |
| MDI-PRC 94 | Current Sens KO | This alarm occurs when the procedure for the maximum current set-up is in progress.… |
| MDI-PRC 99 | Check Up Needed | This is just a warning to call for the time programmed maintenance.… |
| Code | Fault | Meaning |
|---|
| CAPACITOR CHARGE | Capacitor Charge | Follows the charging capacitor system: When the key is switched ON, the inverter tries to charge the power cap… |
| VMN LOW | VMN Low | 1: start-up test. Before switching the LC on, the software checks the power bridge: it turns on alternatingly … |
| VMN HIGH | VMN High | 1: Before switching the LC on, the software checks the power bridge: it turns on alternatingly the Low side Po… |
| POWER MOS SHORTED | Power Mos Shorted | Before switching the LC on, the software checks the power bridge: it turns on alternatingly the Low side and H… |
| COIL SHORTED | Coil Shorted | This alarm occurs when there is a short circuit of one of the coils connected to outputs of the Combiac0 (LC c… |
| DRIVER SHORTED | Driver Shorted | The driver of the main contactor coil is shorted or the coil is disconnected.… |
| CONTACTOR DRIVER | Contactor Driver | The LC coil driver is not able to drive the load. The device itself or its driving circuit is damaged.… |
| CONTACTOR OPEN | Contactor Open | The main contactor coil has been driven by the controller, but the contactor does not close.… |
| CONTACTOR CLOSED | Contactor Closed | Before driving the LC coil, the controller checks if the contactor is stuck. The controller drives the bridge … |
| AUX DRIVER SHORTED | Aux Driver Shorted | The driver of the electromechanical brake coil is shorted.… |
| AUX DRIVER OPEN | Aux Driver Open | The driver of the electromechanical brake coil is not able to drive the load.… |
| POS EB SHORTED | Pos EB Shorted | The output of the built in Smart Driver, which supplies the positive to the Electromechanical brake coil is hi… |
| LOGIC FAILURE #1 | Logic Failure #1 | This fault is displayed when the controller detects an overvoltage or undervoltage condition. Overvoltage thre… |
| LOGIC FAILURE #2 | Logic Failure #2 | Fault in the hardware section of the logic board which manages the phase’s voltage feedback.… |
| LOGIC FAILURE #3 | Logic Failure #3 | Hardware problem in the logic card circuit for high current (overload) protection.… |
| STBY I HIGH | STBY I High | The current transducer or the current feedback circuit is damaged in the controller.… |
| WRONG SET BATTERY | Wrong Set Battery | At start-up, the controller checks the battery voltage and verify it is within a window around the nominal val… |
| ANALOG INPUT | Analog Input | This alarm occurs when the A/D conversion of the analog inputs gives frozen value, on all of the converted sig… |
| ENCODER ERROR | Encoder Error | This fault is signalled in following conditions: the frequency supplied to the motor is higher than 40 Hz and … |
| TILLER ERROR | Tiller Error | Mismatch between the H&S input and the tiller input.… |
| WATCHDOG | Watchdog | This is a safety related test. It is a self diagnosis test within the logic. The watch dog circuit is composed… |
| SMART DRIVER KO | Smart Driver KO | The built in smart driver is open, not able to provide the electro mechanic brake positive.… |
| KEYOFF SHORTED | Keyoff Shorted | This fault is displayed when the controller detects a low logic level of Key-Off signal during Start-Up diagno… |
| EVP1 NOT OK | Evp1 Not OK | A) The EVP driver is shorted. B) The microcontroller detects a mismatch between the valve set-point and the di… |
| EVP2 NOT OK | Evp2 Not OK | A) The EVP2 driver is shorted. B) The microcontroller detects a mismatch between the valve set-point and the d… |
| PUMP VMN LOW | Pump VMN Low | The pump motor output is lower than expected, considering the pwm applied.… |
| PUMP VMN HIGH | Pump VMN High | This test is carried out when the pump motor is turning (pwm applied). The pump motor output is higher than ex… |
| WRONG ZERO | Wrong Zero | The outputs of the amplifiers (used to measure the traction motor voltage) are checked to be included into a r… |
| AUX BATT. SHORT | Aux Batt. Short | A) The coil on the aux output is not correctly connected. B) The smartdriver inside the controller is damaged.… |
| EMERGENCY | Emergency | The voltage on A3 is different than +Vbatt.… |
| FLASH CHECKSUM | Flash Checksum | The software was not correctly written into the flash memory or the flash memory is damaged.… |
| CURRENT SENS. KO | Current Sens. KO | One of the current sensor, used to measure the value of the current on the motor phases, is damaged.… |
| SLIP PROFILE | Slip Profile | There is an error on the choice of the parameters of the slip profile.… |
| FORW+BACK | Forw + Back | This alarm occurs when both the travel demands (Fwd and Bwd) are active at the same time.… |
| INCORRECT START | Incorrect Start | This is a warning for an incorrect starting sequence.… |
| VACC NOT OK | VACC Not OK | The test is made at key-on and after 20sec that both the travel demands have been turned off. This alarm occur… |
| HIGH TEMPERATURE | High Temperature | This alarm occurs when the temperature of the base plate is higher than 85°. Then the maximum current decrease… |
| BATTERY LOW | Battery Low | It occurs when the battery charge is calculated being less than or equal to 10% of the full charge and the BAT… |
| EEPROM KO | EEPROM KO | It’s due to a HW or SW defect of the non-volatile embedded memory supporting the controller parameters. This a… |
| MOTOR TEMPERATURE | Motor Temperature | This warning occurs when the temperature sensor is opened (if digital) or has overtaken the threshold of 150°C… |
| THERMIC SENSOR KO | Thermic Sensor KO | The output of the controller thermal sensor is out of range.… |
| CHECK UP NEEDED | Check Up Needed | This is just a warning to call for the time programmed maintenance.… |
| DATA ACQUISITION | Data Acquisition | Acquisition of the current gains.… |
| PEDAL WIRE KO | Pedal Wire KO | The SW continuously checks for the connection of the two supply ends of the potentiometer in the accelerator. … |
| TILLER OPEN | Tiller Open | Warning: when the tiller is released, after a fixed period of time of standby (30 seconds) the main contactor … |
| CURRENT GAIN | Current Gain | The Maximum current gain parameters are at the default values, which means the maximum current adjustment proc… |
| WAITING FOR NODE | Waiting For Node | The controller receives from the CAN the message that another controller in the net is in fault condition; as … |
| DEAD MAN ABSENT | Dead Man Absent | This warning (presents only in trucks with “Dead Man” switch) appears when the “Dead Man” switch is open.… |
| CURRENT SENSOR LOW | Current Sensor Low | The pump chopper current sensor feedback is too low (below 0.5V).… |
| VALVE COIL SHORTED | Valve Coil Shorted | This alarm occurs when there is a short circuit on an on/off valve coil.… |
| EV1/5 DRIVER SHORTED | EV1/5 Driver Shorted | Electrovalve EV1 or EV2 driver is shorted.… |
| EV2 DRIVER SHORTED | EV2 Driver Shorted | Electrovalve EV2 driver is shorted.… |
| EV3 DRIVER SHORTED | EV3 Driver Shorted | Electrovalve EV3 driver is shorted.… |
| EV4 DRIVER SHORTED | EV4 Driver Shorted | Electrovalve EV4 driver is shorted.… |
| VALVE CONT DRIVER | Valve Cont Driver | One or more on/off valve drivers is not able to drive the load (cannot close).… |
| EVP DRIVER KO | EVP Driver KO | The EVP valve driver is not able to drive the load (cannot close).… |
| EVP2 DRIVER KO | Evp2 Driver KO | The EVP2 valve driver is not able to drive the load (cannot close).… |
| PUMP I NO ZERO | Pump I No Zero | In standby condition (pump motor not driven), the feedback coming from the current sensor in the pump chopper … |
| PUMP I=0 EVER | Pump I=0 Ever | This test is carried out when the pump motor is running, and it verifies that the current feedback sensor is n… |
| RAM WARNING | Ram Warning | Checksum of the ram failed.… |
| EEP WARNING | Eep Warning | Eeprom checksum failed… |
| LIFT + LOWER | Lift + Lower | This alarm occurs when both forks movement requests(Lift + Lower) are active at the same time.… |
| CONT. DRV. EV1 | Cont. Drv. EV1 | The EV1 valve driver is not able to drive the load (cannot close).… |
| CONT. DRV. EV2 | Cont. Drv. EV2 | The EV2 valve driver is not able to drive the load (cannot close).… |
| CONT. DRV. EV3 | Cont. Drv. EV3 | The EV3 valve driver is not able to drive the load (cannot close).… |
| CONT. DRV. EV4 | Cont. Drv. EV4 | The EV4 valve driver is not able to drive the load (cannot close).… |
| CONT. DRV. EV5 | Cont. Drv. EV5 | The EV5 valve driver is not able to drive the load (cannot close).… |
| TH. PROTECTION | Th. Protection | The controller detected a high temperature, and the performance of the motor is limited.… |
| PUMP VACC NOT OK | Pump VACC Not OK | The minimum of the lift potentiometer is not correctly set.… |
| SENS. MOT. TEMP. | Sens. Mot. Temp. | A) The motor temperature sensor is not correctly connected to A22. B) The motor temperature sensor is damaged.… |
Every entry names its source on its own page. Always confirm in the service manual for your exact model.