What to Do When the Aerial Work Platform Keeps Flashing 'CH' and Won't Move?
2 Answers
When the aerial work platform is overloaded, it may fail to lift. The best solution in this case is to ensure no overloading during loading and unloading operations. If the equipment's oil return valve remains open, it can also prevent lifting. Tightening the oil return valve can resolve this issue. Failure to lift may also occur when the manual pump's check valve gets stuck, causing reset malfunction. Further troubleshooting, cleaning, or replacing the hydraulic oil with clean fluid may be required to address the problem.
Hey, I've encountered a similar situation before. When the lift truck shows a flashing CH and can't move, it's most likely an issue with the charging system. Either the battery itself is depleted or aged, or there's poor contact at the charging port. If it's a lead-acid battery, there might be a problem with individual cells causing insufficient voltage for the entire group, or a short circuit in the charging circuit. For safety, first unplug the charging connector and wait for two minutes to let the controller reset, then plug it back in to see if the fault light changes. If it's still on, don't force the operation—contact the manufacturer immediately to send an engineer to check the circuit. Forcing operation on such industrial equipment might burn out the controller, leading to even greater losses.
