I have a Brett Aqualine EM-190 with a Flo Master HP 2 speed pump. When I turn on the low speed pump, I get error code 188 (not in my manual), followed by code 24. I replaced the low flow switch (code 24), but still get the same message. The pump will evenually run on low speed, and then the system kicks off on high speed. Heater will also work once I get the pump going. I can hear a relay click when the 188 code resets. I had the heater element replaced about six years ago, so it's probably due for a new element. Does anyone have any ideas? I'm thinking either the pump or heater element. Thanks, Ranrod