what does code F6 mean

[nwg]

spa was working fine ,had to clean filter when I restarted it it won't work when I press the pump button it pops up F6.
its a four winds spa with a Balboa VS501 pack

[MaryH]

What is not working? Is it just the pump, or is the whole spa completely dead? F6 is a filter cycle setting. You can program filter cycle durations for 2,4,6, or 8 hours. So F6 means pump should come on for a filter cycle every 12 hours and it would last for 6 hours long. You can program by hitting the temp button and then the jets button to scroll through.