Tipton – Wolverhampton – Mastervolt XS fault code HW FAIL 3
Mastervolt XS was reported with a fault code HW FAIL 3.
Attended site and carried out preliminary inspection.
The inverter was found to have been located in an unsuitable location within an enclosure in full sun.
Mastervolt inverter mounted on south facing external wall in cabinet
This probably contributed to its early failure due to the build up of excessive heat in a poorly ventilated enclosure.
The inverter was found to be beyond economical repair.
The inverter was replaced with a SMA Sunny Boy SB2.5-1VL-40 complete with on board wifi monitoring and relocated to a cooler location.