Haulotte error code F07.04 — Boom Angle

blocking fault

General check on angle position can be done as following : Telescope retracted, boom down Raise the boom to nearly 10deg Raise the boom (nearly 50deg) Raise the boom (nearly 50deg+) Raise the boom (nearly 50deg++) Raise the boom to high end Descent the boom (nearly 50deg++) Descent the boom (nearly 50deg+) Descent the boom (nearly 50deg) Descent the boom (nearly 10deg) Telescope retracted, boom down To erase F07.04 failure: fold the machine completely (boom telescope, then arm and boom), check the position detectors (repair if one is broken), power OFF the machine and then power ON. If failure is still active then one of the six detectors defining the machine position is not in the expected state. [case 1] Voltage failure of SQ523 sensor [case 2] Incoherence between boom position sensors : Falling edge on boom high detector out of the allowed zone (boom limit not detected) [case 4] Incoherence between boom position sensors : Raising edge on boom high detector out of the allowed zone (boom limit not detected) [case 8] Incoherence between boom position sensors : Raising edge on limit switch angle sensor during boom descent movement and boom not detected in high position [case 16] Incoherence between boom position sensors : Falling edge on boom zone magnet detector not in allowed zone (limit switch sensor active) during boom descent [case 32] Incoherence between boom limit sensor and boom down sensor [case 64] Incoherence between boom high detector and boom down detector

Description from the Haulotte service manual, in the original wording.

Effect on the machine: --> SQ523 > 6.00V --> SQ521=↓ & SQ523=OFF --> SQ521=↑ & SQ523=OFF --> SQ523=↑ & SQ521=OFF & CTRL[Boom] = D --> SQ523=↓ & SQ521=ON & CTRL[Boom]= D --> SQ521=ON & SQ520=ON --> SSQ523=ON & SQ520=ON