I hooked up this pump and heater exactly as I had my older models. The pump stopped working after 30 minutes of operation and wouldn't start even after cooling it down. The heater worked fine the first time I ran it but the timer started acting up the second time I used it. My previous model would automatically shut off after seventeen minutes and this model is suppose to stop after 20 minutes. This model's timer was defective because it would stop after 7 minutes, 1 minute, 6 minutes, ... etc. I returned both the pump and heater and re-ordered another heater. Hopefully I don't have to return the newer one.
I've used the same type of pump and heater for years without any problems. I wish the newer models were as good as the previous models.