Husqvarna 536LiHE3 Workshop Manual page 50

Symptom
The product cannot be activated. No
LEDs come on after pressing the on/
off button.
The product cannot be activated
and batteries that are inserted are
immediately ruined.
The electric motor does not react
after pressing the control.
Electric motor stutters for a short
period when pressing the control,
after which it stops.
The product turns off under load
Uneven motor speed
50 – English
10 Troubleshooting - 536LiHE3
Possible causes
Faulty battery
Bad contact between battery and
product.
Damage to the multi-wire cable
between the control unit and the
keypad or main switch.
Short circuit in control unit
Short circuit in control unit
Poor connection in main switch
signal contact.
Motor contacts not properly as-
sembled.
Interior damage to main switch
Short circuit in control unit
Short circuit in control unit
Bad contact between battery and
product.
Short circuit in keypad
Poor connection in main switch
signal contact.
Damaged or worn out main switch
Recommended action
1. Check the battery by pressing the
status button. At least one green
LED should light up. See also Bat-
tery and Charger
2. Make sure the power connectors
between the battery and the prod-
uct are not dirty or damaged. See
illustration in annex.
3. Repair or change the multi-wire
cable. (Applies only if there is vis-
ible damage.)
4. Replace the control unit
Replace the control unit
1. Make sure the main switch signal
connector is correctly assembled,
dry, is not damaged and is
corrosion-free. See illustration in
annex.
2. Make sure the motor contact/mo-
tor contacts are correctly fitted.
See figure 5 in the annex
3. Replace the main switch
4. Replace the control unit
Replace the control unit
Make sure the power connectors
between the battery and the product
are not dirty or damaged. See illus-
tration in annex.
Replace the cabling.
1. Make sure the main switch signal
connector is correctly assembled,
dry, is not damaged and is
corrosion-free. See figure 3 in the
appendix
2. Replace the main switch