Sunny Roo & Sunna Inverter Er22 Fault / Error Codes By Simon Rogers|2024-08-20T15:55:11+10:00July 1st, 2015|All posts, Solar Inverter Fault & Error Messages, Solar power, Solar Power Inverters, Videos| Is your Sunny Roo or Sunna solar power inverter showing an Er22 error code on the screen? The Er22 error code is telling you that the Read More