SpaNet has long been known, as the leader is spa control technology.
There are a large number of spa manufacturers that have used SpaNet controllers over the last 7 years.
Download SpaNet troubleshooting guides and manuals here:
XS series:
SpaNet XS series spa controller troubleshotting guide
SpaNet XS series spa controller owners manual
SV series:
SpaNet SV series spa controller troubleshotting guide
SpaNet SV series spa controller owners manual
SpaNet SV2 series spa controller owners manual
SpaNet SV3 series spa controller owners manual
SpaNet SV4 series spa controller owners manual