Product Manual

46
7. Troubleshooting
Problems and Symptoms
Possible Cause
Solutions
A. Power status red light is
blinking fast.
Over input voltage. (OVP)
Check input voltage.
Reduce input voltage.
B. Power status red light is
Blinking slowly.
Low input voltage. (UVP)
Recharge battery. Check connections
and cables.
C. Power status red light is
blinking Intermittently.
Thermal shut-down. (OTP)
Improve ventilation. Make sure
ventilation, shafts of the inverter are
not obstructed. Lower ambient
temperature.
D. Power status is solid red
Short circuit.
Wiring error.
Over Loading (OLP)
Check AC wiring for short circuit.
Reduce load.
Table 47. SD series Troubleshooting
8. Warranty
We guarantee this product against defects in materials and workmanship for a period of
24 months from the date of purchase. Please contact with your local COTEK authorized
distributor for RMA (Return material Authorization) service. Please note that COTEK will
ensure our products are operational before delivery and the warranty service is offered to
the unit which has defect caused under normal use, in the judgment of COTEK’s
technician. The warranty is null and void under the following circumstances：
(a) If the unit has been damaged through abuse, misuse, negligence (such as bumping,
wetting), fault voltage supply, air/water pollution accidents and natural calamities.
(b) If the serial number has been altered, effaced or removed.