The fan in the earlier MultiPlus-II, EasySolar-II and Quattro-II units can be noisy, especially at low fan speeds. The electronics design in the recent MP-II/ES-II/QUA-II units has been improved, fixing this problem.
For the earlier units, we now have small PCBAs available that can be retrofitted to an existing unit without having to take a unit from the wall.
Installing the Fan PWM converter will reduce noise for all fan speeds except full speed. In other words, at 100% fan speed, there is no difference between the old and the new situation. Same with the improved electronics in the MP-II/ES-II/QUA-II units: fan control when running at reduced speeds has a problem which is now fixed. See the sheet in dowloads for more info.
For the 8kVA and 10kVA units, the SPR00091 and SPR00090 are both needed (1x of each).
| Manufacturer Warranty | |
| Standard Warranty: | 5 years (5 years extension to 10 years for additional 10% fee - contact us for a quote) |
| Warranty Exceptions: | Lead acid batteries 2 years Lithium batteries 3 years |
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