System Code | Fault Code | Location | Cause |
1 | 2 | 3 |
| 0 | 0 | System | No Faults - System O.K. |
1 | 1 | System | Parameterize system (re-initialise flash code) |
1 | 2 | Sensor B (L1) | Sensor speed jump |
1 | 3 | Sensor B (L1) | Air gap |
1 | 4 | Sensor B (L1) | Interruption of wire, short circuit |
1 | 5 | Sensor D (H1) | Sensor speed jump |
1 | 6 | Sensor D (H1) | Air gap |
1 | 7 | Sensor D (H1) | Interruption of wire, short circuit |
1 | 8 | Sensor A (L2) | Sensor speed jump |
1 | 9 | Sensor A (L2) | Air gap |
1 | 10 | Sensor A (L2) | Interruption of wire, short circuit |
1 | 11 | Sensor C (H2) | Sensor speed jump |
1 | 12 | Sensor C (H2) | Air gap |
1 | 13 | Sensor C (H2) | Interruption of wire, short circuit |
1 | 14 | Sensor F (Z1) | Sensor speed jump |
1 | 15 | Sensor F (Z1) | Air gap |
2 | 0 | Sensor F (Z1) | Interruption of wire, short circuit |
2 | 1 | Sensor E (Z2) | Sensor speed jump |
2 | 2 | Sensor E (Z2) | Air gap |
2 | 3 | Sensor E (Z2) | Interruption of wire, short circuit |
2 | 4 | Modulator A (L) IV | Break in wiring |
2 | 5 | Modulator A (L) OV | Break in wiring |
2 | 6 | Modulator B (H1) IV | Break in wiring |
2 | 7 | Modulator B (H1) OV | Break in wiring |
2 | 8 | Modulator C (H2) IV | Break in wiring |
2 | 9 | Modulator C (H2) OV | Break in wiring |
3 | 10 | Modulator A (L) IV | Short to earth / ground |
2 | 11 | Modulator A (L) OV | Short to earth / ground |
2 | 12 | Modulator B (H1) IV | Short to earth / ground |
2 | 13 | Modulator B (H1) OV | Short to earth / ground |
2 | 14 | Modulator C (H2) IV | Short to earth / ground |
2 | 15 | Modulator C (H2) OV | Short to earth / ground |
3 | 2 | Contact 3 (supply plug) | Earth missing |
3 | 3 | | Undervoltage |
3 | 4 | Break in wiring contact 7 | Retarder (ECU 446 105 051 0 only) |
3 | 5 | Short circuit contact 7 | Retarder (ECU 446 105 051 0 only) |
3 | 6 | Modulator A (L) [red], or ECU | Earth break |
3 | 7 | Modulator A (L) [red], or ECU | Earth break |
3 | 8 | Modulator B (H1) [yellow], or ECU | Earth break |
3 | 9 | Modulator B (H1) [yellow], or ECU | Earth break |
3 | 10 | Modulator C (H2) [blue], or ECU | Earth break |
3 | 11 | Modulator C (H2) [blue], or ECU | Earth break |
3 | 12 | | Overvoltage |
3 | 13 | Permanent positive at contact 7 | Retarder (ECU 446 105 051 0 only) |
4 | 6 | Modulator A (L) [red], or ECU | Short circuit to positive |
4 | 7 | Modulator A (L) [red], or ECU | Short circuit to positive |
4 | 8 | Modulator B (H1) [yellow], or ECU | Short circuit to positive |
4 | 9 | Modulator B (H1) [yellow], or ECU | Short circuit to positive |
4 | 10 | Modulator C (H2) [blue], or ECU | Short circuit to positive |
4 | 11 | Modulator C (H2) [blue], or ECU | Short circuit to positive |
4 | 12 | No operative modulator connected | |
4 | 13 | No operative sensor connected | |
4 | 14 | Short circuit to positive contact 7 | Retarder (ECU 446 105 051 0 only) |
*) | With this fault, the system configuration flashed out is meaningless. Before changing the ECU, check the earth lead (yellow / green) of each valve against outlet (OV) and inlet valves (IV) again |
| | | | |
System Configuration | Code 1st position |
6S / 3M | 1 identical with C1 |
4S / 3M | 2 identical with C1 |
4S / 2M | 3 identical with C1 |
2S / 2M | 4 identical with C1 |
2S / 1M on red, or yellow, or blue | 5 identical with C1 |
6S / 3M with retarder control | 6 additional to C plus |
4S / 3M with retarder control | 7 additional to C plus |
4S / 2M with retarder control | 8 additional to C plus |
2S / 2M with retarder control | 9 additional to C plus |