Product review (5 stars): Replacement Heat Sequencer Kit for 3115-3571..
this heat sequencer  continues to work well for me for little over week. We had some very harsh winter weather,snow,ice,sleet,freezing rain. I installed this sequencer after labeling the wires - 15 minutes later. I switch the  furnace on and  this new sequencer  works very well and within minutes  the heat pump turns on and out came the much needed heat during our winter storm. The sequencer has worked like it is suppose to work. I am very pleased with my purchase and very pleased with the product. I would buy from this company again. I did not see or have any flaws with this
Replacement Heat Sequencer ..I give the part and company 5 stars and thank you very much for your fast shipping