Century STS1152R was purchased 4/19/2022 to replace Hayward pump SP2610X152S with Century SP1610Z2MSC per INYOPools recommendation. With new pump installed, only the high speed is working. Low speed does nothing.
Original motor replaced because it stopped working with an oily substance coming from the top cover. Did not troubleshoot as it worked fine for years and was due to be replaced.
Being controlled by Intermatic PE135 controller using "mode #2" with circuit #1 being high speed and circuit #2 being low speed. Works on high speed, but when turning on circuit #2 there is an audible click from the Intermatic controller but no pump activity. Same occurs no matter whether trying to start pump on low speed, or switching from high to low speed.
L1 wired to terminal #4. L2 wired to terminal #1, A wired to terminal #6. Copper ground connected to group in controller panel.
Any suggestions to troubleshoot or do I need to return?