Low speed won’t come on....

[GMTK]

I reprogrammed my RS8 about two weeks ago after I found out that I’ve been running 24 hours a day and seven days a week. I’ve noticed that the low speed pump won’t turn on. The current programming is for the high-speed pump to run from 7 AM to 6 PM. And I had a low-speed running from 6 PM to 10 PM. The high-speed is running fine and at 6 o’clock it turns off but the low-speed does not turn on. I’ve gone in and tried to reprogram it again and even set the low-speed to turn on at 5:59 PM and once I do that and hit enter it shows it’s working and will prime the high-speed pump and the low-speed will take over and run to the designated point. But then I go back today on the low-speed should be on and it’s not. I’m open to any suggestions

 

[ogdento]

To diagnose this it seems like you need to determine if it's 1. the programming, 2. the outdoor control board, 3. the pump relay (assuming there's a 2-speed relay for that pump), or 4. the pump itself.

Sounds like you've got #1, the programming, checked... I'm not familiar with the Jandy boards so I'm not sure how to check #2 to make sure the outdoor board is telling the pump to run at low, but you could check #3, the pump relay, to make sure it's energizing the proper coil.

Got any photos of your outdoor board and it's connections?

 

[ajw22]

I suspect you have a problem with the Aux relay the low speed wiring is connected to or a problem with the low speed wiring.

Post a pic of the motor data plate and the inside wiring of your load center panel.

 

[GMTK]

Think I figured it out. You have to program the high speed pump to run at the same time as the low speed. So in my instance I have the high speed going from 7a-10p and the low speed from 6p-10p. So far, it appears to be working as designed.

 

[ajw22]

Think I figured it out. You have to program the high speed pump to run at the same time as the low speed. So in my instance I have the high speed going from 7a-10p and the low speed from 6p-10p. So far, it appears to be working as designed.