DEVDEEP ELECTRICALS Solar, Owner'S Manual

Page: 6 / 12

6
Trouble Shooting
The Inverter displays LED lights and/or screen displays to monitor the normal operation and fault
conditions of the system. The occurrence of a problem within the system will usually be indicated by
the Inverter. The Inverter user manual contains a trouble shooting chapter which will explain these
lights and displays.
Please Read the Trouble Shooting Chapter carefully and then precisely follow the Instructions
Given. If these fail, please call 9726879009 immediately and we can assist to Locate a Qualified
Technician to Resolve your Problem
.
PROBLEM POSSIBLE CAUSE RESOLUTION
In day Hours with
Good Solar
Radiation.
i)
Array Voltage Absent.
ii)
Array is at extremely Low/
High Voltage Condition.
iii)
Array breaker trip/off position .
 Check Array Supply.
 Check Array Supply Low/High
Voltage Condition.
 Switch On Array Breaker, If It
Trip Contact us.
Inverter is
Supplying Power
to Load But
Power Import &
Export is not
Working.
i)
Grid Voltage absent.
ii)
Grid is Extremely Low/High Voltage
Condition.
iii)
Grid Breaker Trip/Off position.
iv)
Grid Contactor is not working.
v)
Grid Frequency is not in range.
vi)
No Sync-Conditions.
 Check input Voltage, Check Grid
& System Fuses.

Check Grid Supply Low/High
Voltage Condition.
 Switch on Grid Breaker, If It
Trips Again, Contact us.
 Check Grid Contactor coil Fuse.
 Check Grid Frequency Low /
High Condition.

Check Phase Rotation.
Output Under
Voltage
i)
Output Short Circuit.
ii)
Inverter Control Card Failed.
iii)
Driver Card Failed.
iv)
Driver Control Failed.
v)
Filter Capacitor Failed.
vi)
No Feed Forward Signal.
vii)
Hall Device Failed.
viii)
IGBT Module Failed.

Check load is Proper or Not.

To Reset the Fault Press Reset
Switch on Front Mimic Display. If
Fault Repeats Contact us.
Output Over
Voltage
i)
Loss of Control Feedback.
ii)
Inverter Control Card Faulty.
 To Reset the Fault Press Reset
Switch on Front Mimic Display. If
Fault Repeats Contact us.
Inverter Over
Temperature
i)
High Ambient Temp.
ii)
Output Overload.
iii)
Inverter Cooling Fan Failed.
iv)
Temp. Sensor Failed.
v)
Inverter Control Card Failed.
vi)
Ventilation Inputs Blocked.
 Check Room Ventilation is
Proper or Not.
 Reduce the Load.
 Contact us.

Contact us.

Contact us.

Clean Ventilation Input by
Blower Fan.
DC Over Voltage
i)
Reverse Power Flow
ii)
Synchronization Failed.
iii)
Inverter Control Card Failed.
 To Reset the Fault Press Reset
Switch on Front Mimic Display. If
Fault Repeats Contact us.
Wound
Component OT
i)
High Ambient Temp.
ii)
Output overload
iii)
Wound component Cooling fan
Failed.
iv)
Temp. Sensor Failed.
v)
Inverter Card Failed.
vi)
Ventilation Inputs Blocked.
 Check Room Ventilation is
Proper or Not.

Reduce the Load.

Contact us.
 Contact us.
 Contact us.
 Clean Ventilation Input by
Blower Fan.