Download Sunny Boy, Sunny Mini Central

SMA Technologie AG
Operating modes of the inverter
4.4.8 Insulation fault or defective varistor
The red LED on the Sunny Boy / Sunny
Mini Central is continuously on. With this
blink code, it is not relevant if the green or
yellow LEDs shine or blink. A grounding
fault exists or one of the thermally
monitored varistors on the DC input is
defective as a result of overvoltage or
ageing. In this event, only devices with
transformers (without "TL" in the device
name) continue to feed electricity.
(green)
not relevant
(red)
The red LED is
continuously
on.
(yellow)
not relevant
Consult trained electrical personnel to correct the fault. Fault removal
instructions can be found in the inverter's installation manual.
4.4.9 Defective DC input
Sunny Boy Multi-String
The red LED blinks. With this blink code, it
is not relevant if the green or yellow LEDs
are on of off. At least one of the DC inputs
is defective.
(green)
(red)
not relevant
The red LED
blinks.
(yellow)
not relevant
A fault has occurred which can no longer be resolved on-site. Consult SMA
(see chapter 10 "Contact" (Page 67)) to discuss further action.
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SB_SMC-BEN073618
Operating Instructions