Growatt MTL-S - 2. Other Faults; No Display, No Light; Display Filled with Black Square; Inverter Keeps Reconnecting

Growatt New Energy Australia Pty Ltd
C1, 27-29 Fariola Street,
Silverwater NSW 2128
Phone: 02 8065 1298
Email: australia@ginverter.com
Email:
ausupport@ginverter.com
www.ginverter.com
2 Other faults
In some cases, there is no message on the screen, please determine the fault by matching up
with table of fault description below.
Fault description
Suggestions
No display, no light
1. Check if PV Array isolator is on
2. Contact Growatt to claim warranty
Display is filled with black square
Contact Growatt to claim warranty
Inverter keeps reconnecting
DC input voltage is too low(< 200V)
Inverter trips over frequently
AC V Outrange
AC circuit breaker trips over
1. Check the isolator tripping off or
not, once the inverter is on.
2. If the isolator tripped off just after
the inverter LCD screen display
“connect ok”, please contact
Growatt for a warranty enquiry.