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IQ8 Series Microinverters firmware version release notes (2.48.01)
November 23, 2023

Firmware release: Version 2.48.01 
Supported microinverters: All IQ8 Series Microinverters (IQ8, IQ8+, IQ8M, IQ8A, IQ8H-240, and IQ8H-208) 
Geographies: USA, Canada, and Mexico


Release notes: 

#

Update

Description

1

Upgraded DC input specification, making IQ8 microinverters more suitable for modules with higher current 

  1. Maximum continuous DC current increased to 12A (previously 10.6A) 

  1. Wider operating voltage range 16V – 58V (previously 25V- 58V) 

  1. Improved power tracking with wider MPPT voltage range 

  1. Start-up voltage lowered to 22V (previously 30V) 

2

Improvements and compliance updates

  • Compliant with IEEE 1547:2018

  • Improved firmware to handle weak AC grids

 

All new IQ8 Microinverters installed after the rollout will be auto-upgraded to this new firmware, version 2.48.01.

Use the updated Enphase compatibility calculator to determine the electrical compatibility of PV modules with the Enphase IQ Microinverters.

All IQ8 Series Microinverter documentation has been updated with the new specifications outlined above. Visit the documentation center to view these technical documents.

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What differentiates the existing IQ8M, IQ8A, and IQ8H Microinverters from the new IQ8MC, IQ8AC, and IQ8HC Microinverters?

The following tables illustrate the differences in DC and AC parameters between these microinverter models. Refer to the table below for DC parameter changes:

DC parameters IQ8M IQ8MC IQ8A IQ8AC IQ8H IQ8HC
MPPT voltage range (V) 30-45 25-45 32-45 28-45 36-45 29.5-45
Operating range (V)  16-60 18-60 16-60 18-60 16-60 18-60
Max. cont. operating DC (A) 12 14 12 14 12 14

 

Apart from this, the maximum continuous power of the IQ8MC Microinverter is reduced by 5 W to accommodate one extra microinverter in a branch (peak power remains the same for the IQ8M and the IQ8MC). Refer to the table below for AC parameter changes:

 

AC parameters IQ8M IQ8MC IQ8A IQ8AC IQ8H IQ8HC
Max. cont. output power
@240 V (W)		 325 320 No change
Max. units per 20 A (L-L)
branch circuit @240 V		 11 12 No change
Supports 208 V grid
(single-phase)		 ✘ ✔ ✘ ✔ ✘

✔
Supports 220 V grid ✘ ✘ ✘ ✘ ✘ ✔