Troubleshooting
Guide
SOLAR OFF-GRID MPPT PCU, PAGE 14, Ver. 1.0
Problem
Possible Cause
Resolution
In day Hours with good
solar radiation, Solar
PCU is running on
Battery
a) PV voltage absent
b) PV is at
extremely low /
high voltage condition
a) Check PV supply
b) Check PV supply low/high voltage
Condition
Low battery
backup
a) Solar PCU Overload
b) Battery deteriorated
c)
Battery is not fully charged
d) Battery charger fail
e) Battery path fuse fail
f) High ambient Temp.
a) Check load condition
b) Check battery status
c) Contact Our Service Center
d) Contact Our Service Center
e) Contact Our Service Center
f) Maintain ambient temp. as per spec.
Output Under/Over
Voltage
a) Output short circuit
b) Control board failed
a) Check load.
b) To reset the fault press reset switch on
front LCD display. If fault repeats
Contact Our Service Center
PCU Over
temperature
a) High ambient Temp.
b) Output overload
c) PCU cooling fan failed
d) Temp. sensor failed
e) Control board failed
f) Ventilation input is
blocked
a) Check Solar PCU room ventilation is
proper
b) Reduce the load
c) Contact Our Service Center
d) Contact Our Service Center
e) Contact Our Service Center
f) Clean ventilation input by blower fan
For proper operation of your PCU, please use wires according
to the wiring details given below. Ensure all wires shall be adequately
tightened on respective terminals.
