Download SpaNet troubleshooting guides and manuals here:
XS series:
SpaNet XS series spa controller troubleshooting guide.
SpaNet XS series spa controller owners manual.
SV series:
SpaNet SV series spa controller troubleshooting guide.
SpaNet SV series spa controller owners manual.
SpaNet SV2 Manual
SpaNet SV3 Manual
SpaNet SV4 Manual