GTI Grid Series
3
a. Green LED flash: adjusting for power output, MPPT operating for tracking.
b. Green LED long light: indicates inverter locking-in Max. output power operation
status.
3. Please note that above operations only run at grid-connected status.
Troubleshooting a non-operating Smart microinverter
WARNING!
Only qualified electrical professionals can do the trouble shooting of the Smart microinverter
system.
WARNING!
Do Not disconnect the microinverter from its PV module when the inverter is still operating.
Disconnect the inverter from the PV module during running may damage the microinverter and
bring electrical hazard to the person nearby.
WARNING!
Disconnect the AC grid first before disconnecting the inverter from the PV module.
To troubleshoot a non-operating Smart Microinverter, follow the steps below in order:
1. Verify the utility voltage and frequency are within ranges shown in the in section Technical Data of
this manual.
2. Check the connection to the utility grid. Verify utility power is present at the inverter in question
by removing AC, then DC power. Never disconnect the DC wires while the microinverter is
producing power. Re-connect the DC module connectors and watch for three short LED flashes.
Safety Instruction
Do not use Smart microinverter in a manner not specified by the manufacturer. Doing so may
cause death or injury to persons, or damage to equipment.
Perform all electrical installations in accordance with all applicable local electrical codes.
Be aware that only qualified personnel should disassemble and repair the Smart Microinverters
and non-qualified personnel should not install and/or repair.
Do not attempt to repair the Smart Microinverter; it contains no user-serviceable parts. If it
fails, contact YSmartcustomer service to claim a return merchandise authorization and start the
replacement process. Tampering with or opening the Smart Microinverter will void the
warranty.
If the AC cable connector on the microinverter is damaged or broken, do not install the unit.
Before installing or using the Smart Microinverter, read all instructions and cautionary markings
in the technical description and on the Smart Microinverter System and the PV equipment.
Connect the Smart Microinverter to the utility grid only after you have completed all
installation procedures and after receiving prior approval from the local electrical utility
company.
Be aware that the body of the Smart Microinverter is the heat sink. Under normal operating
conditions, the temperature is 15°C above ambient, but under extreme conditions the
microinverter can reach a temperature of 75°C. To reduce risk of burns, use caution when
working with microinverters.
Do NOT disconnect the PV module from the Smart Microinverter without first removing AC
power.
Keep away from children, no touching, no playing so as not to electric shock when using.
Please installed in place of low humidity and well-ventilated so as to avoid inverter overheating,
as well as clear around the inflammable and explosive materials.
