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ABB / Power One Aurora Solar Inverter Faults and Repairs Service
Power One, at one point were the second ranked solar PV inverter manufacturer in the world and there are many Power One Aurora solar Inverters installed in the UK. The most popular models being the Uno PVI-3.0-TL-OUTD and the Uno PVI-3.6-TL-OUTD. Power One was purchased by electrical equipment giants ABB in 2013. As part of their purchase ABB took over the guarantee responsibilities from Power One.
As a result of their popularity we have become very familiar with diagnosing faults with Power One solar Inverters. Power One Aurora solar inverters, both single phase (Uno) and three phase (Trio) have an LCD display on the front of the chassis. Identifying error codes shown on the display (assuming the display is working) is usually the best place to start in diagnosing the fault and getting systems using Power One solar inverters up and running again.
NB: "E031 - Error Read V" or "Int.Error E031"This is a common error found with Power One Aurora solar inverters. This is an error inside the solar inverter relating to damaged external relays. This error is often accompanied by a humming noise when the solar inverter tries to start up and presents itself just before you would typically expect the solar inverter to connect to the grid and start generating. Damaged relays can be replaced, however, given the age of the units that usually demonstrate this fault and the comparitively low cost of a replacement, when Power One Aurora units are out of warranty and have E031 relay failures, we recommend that the solar inverter is replaced.