There are 2 fuses in the sc200 controller - what is the other fuse for?
sc200 fuse information details
The sc200 is compatible with both 110 VAC and 220 VAC systems so there are two fuses, L1 on the left and L2 on the right. When connected to 120VAC only the L1 fuse is used. When using 240VAC then 120VAC will be on L1 and 120VAC on L2.