7.5 Troubleshooting schedule
Problem Possible cause Step Troubleshooting
To do
The LED
indicators
on the
control
panel
does not
work.
The control panel is defec-
tive.
1
Do a visual inspection. Replace the control
panel if is defective.
Wire fault.
1
Do a check of the wires, refer to the wiring
diagram.
Replace defective
wires.
The primary control unit is
defective. 1
No troubleshooting is possible. Replace the pri-
mary control unit if
it is defective.
The
SavE
™
function
does not
work.
The product is overloaded.
1
With increased load the product switches
from SavE
™
to standard mode.
N/A
The control panel is defec-
tive. 1
Do a visual inspection. Replace the control
panel if it is defec-
tive.
Wire fault.
1
Do a check of the wires, refer to the wiring
diagram.
Replace defective
wires.
The primary control unit is
defective. 1
No troubleshooting is possible. Replace the pri-
mary control unit if
it is defective.
The drive
does not
work.
Wire fault.
1
Do a check of the wires, refer to the wiring
diagram.
Replace defective
wires.
The micro switch in the han-
dle is defective. 1
Examine the micro switch in the motor con-
trol box. Make sure there is a click sound
when the power bar is pulled.
Replace the switch
box assembly.
The transmission is defec-
tive.
1
Make sure that the voltage comes to the
transmission. The voltage from the trans-
mission must be equal to the battery volt-
age. The safety key must be in position 1,
the ON button must be pushed and the
power bar must be pulled. Measure the
current on the wires to the transmission
when the transmission is on.
Replace the trans-
mission if it is de-
fective.
The primary control unit is
defective.
1
No troubleshooting is possible.
Replace the control
unit if it is defective.
7.6 To use the common service tool (CST)
The CST transmits data from Husqvarna products and
the batteries to a computer (not included). There is a
diagnostic tool list and a list of saved error codes. The
CST can also update the software in battery products.
Note: To make sure that the product is fully updated you
must do the updates on battery slot 1 and battery slot 2.
1. Remove the battery from the product.
2. Connect the adapter cable (A) to the battery (B) and
to the battery slot connector (C) on the product.
3. Connect the cable (D) to the CST.
4. Start the product, turn the safety key to 1.
5. Push the ON/OFF button on the control panel.
6. On the computer, select the model type of the
connected product.
1292 - 001 - Troubleshooting - 37
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