Terex Genie GR-26J Service Manual

Also see for Genie GR-20J: Service manual Operator's manual

Section 5 • Fault CodesPart No. 227656GT GR™-20J • GR™-26J 5 - 9March 2022FAULT CODE CHARTError Source Error TypeID Name ID Name Condition Solution17 Stand bypumpThe current sensor of thepump detects a currentother than zero when thepump is not working.It is an internal fault.Replace the controller.18 Pump I=0The current sensor of thepump detects a current ofzero even though thepump is working.Check the connection of thepump: if the pump is notconnected, current cannot flowand the diagnostic fails.Otherwise, it is an internalproblem.19 Periodic error#1The base board has notresponded to the requestas expected. Th econtroller board has askedthe base board to leave itsdrive input inactive but it isactive.It is an internal fault.Replace the controller.20 Capacitorcharge1) An external charge is inparallel with the capacitorand reduces the current ofthe recharge circuit,thereby preventing thecapacitors from charging.2) There is a problem withthe charging circuit andthe controller must bereplaced.When the key is connected, thecontroller tries to charge thepower capacitors via a resistorand checks whether thecapacitors are charged. If theydo not charge, an alarm isgenerated. The main driver isnot closed.21Chargecontrol lampincorrectDuring stand-by the fieldvoltage should be approx.½ V. This alarm isgenerated if the fieldvoltage differs from thisvalue.The possible external causesare: incorrect connection of theexcitation wires, leakage to theframework of the platform.Otherwise, it is an internal fault.02 Controllerlogicboard22 VMN lowThe VMN voltage of oneof the drive motors is low.This alarm appears duringstand-by. Check : internal motorconnections; electric cableconnections; leakage from themotor to the framework of theplatform. If everything is OK, thecontroller has an internal fault