Troubleshooting - Boss Snowplow RT3 EXT Installation Instructions Manual

Troubleshooting

Problem
The pump motor does not run.
The pump continues to run while the
switch is in neutral.
The plow does not lower.
The plow lowers too fast.
Possible Cause
1. The power/ground cables or control
cables are not connected.
2. The pump motor has failed or the
pump has seized
3. The cable between the battery and the
solenoid is disconnected or broken.
4. The solenoid has failed.
5. Power from the relay is disconnected.
1. The solenoid has failed in the closed
position.
2. There is a short between the black and
white/black wire in the controller.
3. The switch has failed.
1. The power/ground cables or control
cables are not connected.
2. The flow-control valve is closed.
3. The wiring on the valve block is not
connected.
4. The solenoid valve or valve coil has
failed.
5. Power from the relays is disconnected.
1. The flow-control valve is open too
much.
23
Corrective Action
1. Connect the cables.
2. Check for voltage at the pump motor
while the ignition switch is on and
the Raise button is pressed on the
controller. If voltage is present,
the motor brushes or pump/motor
assembly may be replaced.
3. Check for power to the solenoid by
testing for voltage between both large
terminals and ground. If voltage is not
present between one large terminal
and ground, connect or replace the
cable.
4. Check for voltage between the other
large terminal of the solenoid and
ground while jumping power to the
small terminal with the white/black
wire. If no voltage is present, replace
the solenoid. If voltage is present,
connect or replace the wire from
the small terminal of the solenoid to
ground.
5. Test the voltage between the black
wire and ground at the white 9-pin
connector. If no voltage is present,
connect the relay. If voltage is present,
check the wiring and controller
switches.
1. Disconnect the controller and turn the
ignition on. If the pump continues to
run, quickly remove power to the pump
by disconnecting the power/ground
cables to the plow and replace the
solenoid.
2. Disconnect the controller and turn the
ignition on. If the pump stops running,
replace the wire.
3. Replace the switch.
1. Connect the cables if they are not
connected.
2. Place the controller in neutral, then
open the flow-control valve.
3. Refer to the wiring schematic.
4. Check for voltage between the solenoid
valve terminal and ground while the
ignition switch is on and the controller
is in the Float position. If voltage is
present, replace the valve or valve coil.
5. Check the voltage between the black
wire and ground at the white 9-pin
connector. If no voltage is present,
connect the relays. If voltage is
present, check the wiring and switch
off the controller.
1. Close the flow-control valve to the
desired drop speed.