Safety relays are closed.
Safety relays at the PV inputs may have closed. This only occurs if the Multi RS19 Solar has protected itself from a hazardous situation.
The safety relays are located inside the Multi RS19 Solar.
Danger
THE TOP COVER SHOULD ONLY BE REMOVED BY AUTHORIZED SERVICE PERSONNEL.
Under normal operating conditions the small black flag on top of the relay should be in the "OK" position. If the flag indicates towards the position with a danger symbol then it is closed. When the relays are closed the PV array is short circuited to stop PV power from entering the Multi RS19 Solar. The PV fuses or circuit breakers in the installation may open.
The fault cannot be cleared nor reset. The relays have closed to prevent further damage due to the internal fault.
The Multi RS19 Solar should be returned to the supplier.
Warning
DO NOT ATTEMPT TO RESET THE SAFETY RELAYS. THE RELAYS HAVE CLOSED TO PROTECT FROM A HAZARDOUS SITUATION.