Sunnyboy Inverter Error K1 Open By Simon Rogers|2024-08-21T15:15:21+10:00July 17th, 2017|All posts, Solar Inverter Fault & Error Messages, Solar Power Inverters, Videos| Sunnyboy Inverter Error K1 Open Is your SMA Sunnyboy solar inverter showing an error K1 Open message? If so your solar power system isn't working, so Read More