Display Alarms - Tennant T290 Manual De Instrucciones

11.

DISPLAY ALARMS

ACC / MAN : ACCelerator / MAN
Appears if the drive lever is pushed when starting or after an emergency reset.
The drive cannot be engaged until the lever is released.
POT : POTentiometer
This indicates a fault or breakage of the speed adjustment knob
Drive stops, release the drive lever and then activate it again.
If the problem persists, the knob may be broken.
Lim : Limitation
Appears when the MOSFET reaches the internal temperature limit.
Drive stops, release the drive lever and then activate it again.
If the problem persists, wait a few minutes to let the Mosfet cool down.
Hom : MOSFET thermal protector
Appears when the temperature sensor inside the MOSFET is activated.
Switch the machine off and wait 10 min for the component to cool down. If necessary,
replace the board.
Hot : Overheating
Appears when the motor's temperature sensor is activated
Wait a few minutes for the motor to cool down. Check the connection between the thermal
protector and the board.
MoS : MOSFET
Appears when there is a short-circuit in the drive Mosfet or the contactor coil does not
close correctly and the brush or drive functions are not activated.
The suction relay coil is short-circuited, test with a new relay
The drive motor relay coil is short-circuited, test with a new relay
Drive stops in any case.
When this message is shown, the main contactor is disabled.
Replace the main board.
MoF : Mosfet
Appears when the drive Mosfet remains open. Drive stops.
The brushes and suction are enabled, drive is disabled.
bLt : drive blocked
Appears when the battery voltage is too low and the drive is blocked. Recharge the
battery and try again.
AcS : Brush control fault
Appears when there is a fault in the solenoid switch controlling the brush.
Press the brush switch, if the message is still shown, the contactor may be disconnected
or the control element on the board may be faulty.
AcA : Suction control fault
Appears when there is a fault involving the contactor that activates suction.
ENGLISH
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