Dus

We can close this one off guys. I fixed the problem today! After almost throwing in the towel and letting the local pro take a look, I checked the Pump 1 power to the board and noticed that the black wire was slightly pulled out of the plastic housing and thus not making contact. Re-set the wire into the housing, and voila - low speed is working just fine. Thanks for the assistance @RDspaguy @CanadianSpaTech

@RDspaguy Just tried using the default factory setting dipswitch (0100000) and it didn't change the result Still clicking at the pack but not firing the pump for low speed. Economy mode? I haven't found anything referring to this in the documentation. Appreciate the help thus far! edit: what parts of the board are you looking for specifically? I can make sure to take a better pic. edit2: The "mode" is set to READY as per default which should instruct the usage of the Pump 1 as a 2 speed pump for circulation.

@RDspaguy I'll try that out! Although I configured this the same as the BP500 (Two pumps, HTR). edit: Can confirm 50A breaker for the hookup.

@CanadianSpaTech Appreciate the quick reply. My apologies for the terrible pics. The mosquitoes were out and giving me a hard time. If you are looking for something specific, I'll take new pics tomorrow. Just FYI, dip switches were defaulted to 01000000 with an S-20 setup. I think I configured them correctly to 00100000 (I have 2spd+1spd pumps) with an S-21 setup. I even tried going back to S-20 (confirmed Pump 2 didn't turn on) just to see but Pump 1 still wasn't having it.

Just replaced my spa pack with a BP7 (replacing a BP500) because of heating issues last fall. For some reason, my main 2 speed pump doesn't turn on low speed (only high speed). Terrible for heating situations as high speed auto shuts off (plus I wouldn't want to be running on high all the time anyway). I switched the wires at the pump to test low speed availability and it does indeed work. This is a brand new pack, why would I have issues with the signal on the low side? I can hear the "clicking" sound when it's the pack is trying to turn on the low speed but with no result. Any help is appreciated!