Fronius Solar Inverter TEST COM Error Code By Simon Rogers|2024-08-22T16:03:19+10:00August 15th, 2016|All posts, Solar Inverter Fault & Error Messages, Solar power, Solar Power Inverters| Fronius Solar Inverter TEST COM Error - What can you do? As a Fronius service partner we've seen a number of Fronius IG series inverters with Read More