Otis · 400 Elevator
Indicates a coin had been improperly routed within the changer. This can lead to coins ending up in the wrong tubes, jams, or incorrect inventory counts.
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Inspect all car position sensors (e.g., floor selector, encoder) for physical damage, debris, or misalignment that could lead to incorrect floor detection.
Verify operational parameters within the Otis 400 controller relating to floor designations, car dispatch logic, and door timing against documented specifications.
Check the integrity of wiring and connections for all hall calls, car calls, and floor position sensors for loose terminals or damage.
Measure supply voltages to the main elevator controller and auxiliary I/O modules to ensure they are within specified ranges.
Inspect mechanical components of the door system and car guide rails for any obstructions or excessive friction that could impede smooth operation and cause 'jams'.