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5. Trouble Shooting
LED display
Cause
Remedy
Red, slowly flashing
Battery under voltage
or battery overload
Check the battery.
Switch the battery charger off and on again.
Defective battery
Replace the battery
Overheating
Improve the ventilation of the battery charger
or battery.
Make sure that no ventilation openings are
covered.
If necessary, reduce the ambient temperature.
Red, permanently lit
Short circuit or
reversed polarity
Connect the battery charger with the correct
polarity.
Rectify the short circuit.
Check if the fuse has blown and replace it if
necessary.
Red, double flash
Fan fault
Check the fan for dirt or damage.
Red, slow double
flash
Fault at the starter
battery connection
Check the starter battery connection for a short
circuit.
6. Warranty Statement
We guarantee this product against defects in materials and workmanship for a period of 24 months
from the date of purchase. Please contact your local COTEK authorized distributor for RMA
(Return material Authorization) service. Please note that COTEK is only responsible for ensuring
our products are operational before delivery. This warranty will be considered void if the unit has
been misused, altered, or accidentally damaged. COTEK is not liable for anything that occurs as a
result of the user
’s fault.
