Tennant T290 Manual De Instrucciones página 39

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.
Press the suction switch, if the message is still shown, the contactor may be disconnected
or the control element on the board may be faulty.
ACH : Solenoid valve control fault
Appears when there is a fault involving control of the water solenoid valve.
Check the coil and the wiring between the instrument panel board and the solenoid valve.
FuP : Fuse
Appears when the main contactor coil does not close correctly and suction is activated.
Internal problem on the display board or no contact with earth cable.
CLH : Clock
Appears when there is a problem with the instrument panel board memory. Replace the
board.
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