Maintenance - Goodwe ET Series User Manual

4.1 WARRANTY REFUSAL
Hybrid ET series inverters are transported, used, and operated following standards. The GoodWe company
has the right not to provide warranty or technical support in the following cases:
•
The inverter was damaged during transport.
•
The inverter is out of warranty and the extended warranty is not purchased.
•
The inverter is installed, repaired, or operated improperly without GoodWe's approval.
•
The inverter is improperly installed or used in an inappropriate environment that is not following
this document and has not been approved by GoodWe for operation in these conditions.
•
Installation or setup of the inverter does not meet the requirements stated in this document.
•
The inverter is installed or operated in non-compliance with the requirements or warnings in this
document. The inverter is damaged by force majeure such as lightning, earthquake, fire, volcanic
eruption, etc.
•
The inverter has been opened, modified, or software and hardware updated without GoodWe's
authorization.
•
The inverter is installed, used, or operated in non-compliance with international or local
regulations.
•
An incompatible battery, solar panel, appliance, or other incompatible device connected to the
inverter has been connected
Note: GoodWe reserves the right to change any content in this user manual.

Maintenance

The inverter requires periodic maintenance; the details are shown below:
WARNING: Make sure the inverter is completely disconnected from DC and AC power and wait at least 5
minutes before servicing.
Cooler: Clean the cooler once a year with a clean cloth.
Torque: Once a year, check the tightening of the AC side and battery connection screw using a torque wrench.
DC switch (optional): Regularly check the DC switch, turn on and off the DC switch 10 times in a row once a
year, the contacts will be cleaned and the service life of the switch will be extended.
Waterproof covers: Once a year, check that the RS485 waterproof covers and other parts are well-fixed.