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Numatic TTV 678 - Page 53

Numatic TTV 678
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53
Number of bars ashing on display Fault Possible Cause Effect on Product Investigate the Following Action Required If Fault
Persists.
* 6 Bars ash continuously.
* Control system is Inhibiting drive. * Faulty controller. * Machine will not operate. * Check controller for water damage. * Replace controller.
*7 Bars ash once with pause
* Accelerator pedal trip. * Accelerator pedal being activated without
seat switch being activated (nobody on seat)
Or seat switch momentarily deactivated while
accelerator pedal being activated during forward
/ reverse operation.
* Machine will not drive. * Ensure accelerator pedal is not activated without
seat switch being activated. Ensure rm contact
with seat by operator at all times while accelerator
is pressed.
* Operator to be trained.
* 7 Bars ash twice with pause. “ Emergency stop has been activated.
* Off aisle cleaning activated with oor
tool raised.
* Inadvertent pressing of emergency stop or
activation of off-aisle cleaning mode.
* Machine will not drive. * Ensure emergency Stop button has not been
activated and off aisle vac switch is in off position
with oor tool raised.
* Reset emergency stop button. Switch off aisle
vac and raise oor tool.
* Cycle key switch to resume normal operation.
* 7 Bars ash 3 times with pause. * Vac Motor system short circuit. * Vac motor wiring fault / motor fault. * Vac motor will not operate. * Check vacuum motor and wiring * Replace motor and any damaged wiring.
* Cycle key switch to resume normal operation.
* 8 Bars ash continuously.
* Control system trip. * Seat switch failure. * Machine does not operate. * Check seat switch wiring. * Replace wiring as required.
* 9 Bars ash once with pause.
* Flashing beacon failure to operate. * Beacon short circuit. * Flashing beacon does not operate
in accordance with safety require-
ments.
* Check wiring and connections to device. * Replace damaged components.
* Cycle Key switch to resume normal operation.
* 9 Bars ash 3 times with pause. * Water pump failure to operate. * Failure of pump or wiring short circuit. * No water supplied to cleaning
heads.
* Check wiring and connections to pump. * Replace damaged components.
* Cycle Key switch to resume normal operation.
* 9 Bars ash 4 times with pause. * Detergent pump failure to operate. * Failure of pump or wiring short circuit. * No detergent supplied in water mix
to cleaning head.
* Check wiring and connections to pump. * Replace damaged components.
* Cycle Key switch to resume normal operation.
* 9 Bars ash 5 times with pause. * Solenoid brake circuit failure. * Failure of solenoid or wiring. * Machine will not move. * Check wiring and connections to brake. * Replace damaged components.
* Cycle Key switch to resume normal operation.
* 10 bars ash continuously
* Supply voltage to controller has
exceeded 40 volts.
* Battery and motor connections may have
become loose.
* Possible long term damage to
controller if fault persists.
* Check battery wiring, trio drive and motor
connections.
* Replace damaged components.
* Cycle Key switch to resume normal operation.
* Bars cycle up and down
continuously (from 1 to 10 and 10
back to 1) and repeats.
* Accelerator pedal movement
detected during Vario start up se-
quence (partially pressed or jammed).
* Foot or object on pedal during switch on or
possible jamming of pedal.
* Machine will not operate. * Remove object and ensure pedal is not jammed
or depressed during switch on of Vario.
* Cycle Key switch to resume normal
operation .
* Bars cycle from 1 to 10
continuously and repeats.
* Machine inhibit. * Controller/harness incorrectly wired. * Machine will not operate. * Check controller and harness wiring with special
attention to wires p2/03 and p2/10.
* Correct wiring.
* Cycle Key switch to resume normal operation
* No indication on display. * Horn and beacon failure. * Replace 20 Amp fuse (If this doesn’t x fault replace horn or beacon)
* No indication on display. * Brush motors continuously either off
or on while in transport mode.
* Microswitch failure. * Brushes will not operate correctly. * Check wiring and microswitch on underside of
machine by brushes ensuring microswitch is clear
of debris.
* Replace/clean damaged components.
* No indication on display. * VAC motor continuously either off
or on.
* Microswitch failure. * Vacuum will not operate correctly. * Check wiring and microswitchs behind oor tool
handle.
* Replace/clean damaged components.
Contact Service Agent.

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