NaceCare TTV678 TTV678 Owners Manual (External Charger) - Page 21

Trouble Shooting Sleeping/rest mode: Battery indicator flashes every 5 seconds indicates machine has been idle for more than 20 minutes. Vario functions disabled cycle key switch! Number of bars flashing on display Fault Possible Cause Effect on Product Investigate the Following Action Required * 1 Bar flashes continuously * 2 Bars Flash continuously. 3 Bars Flash continuously. * Batteries voltage low. * Traction drive overload. Brush motor over current trip has occurred. * Batteries not been charged. * Possible bad connection between batteries, controller, charger or fuses caused by loose connections , damaged wiring , water ingress. * Not accepting charge due to faulty battery/cell. * Charger not functioning. * Operating time severely reduced or machine will not operate. * Traction drive over current trip due to too high a load. * Traction drive is disconnected or has bad connection due to wiring or connectors becoming damaged, loose or corroded due to water ingress. Rough floor surface. Brush motor has failed or is damaged.. Brush motor bad connection. * Brake engaged no movement. * Intermittent brush trip. * Brush Motor doesn't run or runs intermittently. * Check when machine last charged. * Switch OFF the machine. * Remove Fuses. * Check connections to batteries, charger and fuses for loose wires or screws. * Check each battery Voltage individually to detect defect unit 10.5V min. * Check battery voltage and charge current. ensuring charger red fault light is extinguished. * Did machine fail on incline. Check traction wheel free from debris. * Cycle Key switch to resume normal operation. If the above fails then: Switch machine off. Check connections and harness between drive motor and controller. * Brush type suitable for floor surface. " Cycle Key switch to resume normal operation. * If the above fails then: Switch off machine. * Check brush motor for damage. * Check brush motors turn freely. * Charge batteries immediately. * Tighten loose connections and replace damaged components. * Replace batteries as required. * Replace charger. * Cycle key switch to resume normal operation. * Tighten loose connections and replace damaged components. * Change brush , adjust brush speed and reduce pressure by turining adjustment knob anticlockwise. * Replace effected motor or wiring. If Fault Persists. * 4 Bars Flash once with pause. * System trip. * System failure. * Machine will not operate. * Cycle key switch to resume normal operation. * If the above fails then. * Switch machine off. * Check connections and harness between Brush Motor and controller. * Check BRUSH Motor connections block underneath chassis , behind mud guard for loose wires and loose screws. * Cycle key switch to resume normal operation. * Replace controller. Contact Service Agent. 21 * 4 Bars Flash twice with pause. * Spare Solenoid connection trip. * System has been incorrectly rewired. * Machine will not operate. * 5 Bars flash continuously. * Vac Motor is disconnected, has failed open circuit, has a bad connection or water ingress temperature trip activated. * Wiring between Vac motor and Controller is damaged, wiring is loose or wiring connections are loose, possibly wire has come out of a connection block - blocked exhaust. * Vac motor will not operate. * Refer to wiring diagram and check the solenoid/ water/detergent pump wiring configuration. " Cycle Key switch to resume normal operation. * If the above fails then: * Switch off machine. * Check for loose or damaged wiring and connections between Vac motor and controller. * Cycle key switch to resume normal operation. * Rectify wiring fault found. * Tighten loose connections and replace damaged components - check exhaust clean if necessary.