HotSpring Spa 4KW PDR No-Fault Heater, no Pressure Switch HotSpring and pools which use a

and pools which use a Caldera 75 filter

2001-2007 Hot Spring Vanguard and 2004-2007 Hot Spring Vista

This retrofit kit is used to replace the air check valve that was used in all 2001 to the 3rd quarter of 2002 Hot Spring spa models

jade & blue colored 2000-current Hot Spring spas

built without a pressure switch

HotSpring Spa 4KW PDR No-Fault Heater, no Pressure Switch HotSpring and pools which use aThis is the 4KW PDR heater, built without a pressure switch. Please note that if your spa was designed to use the heater with a pressure switch, you can still use this heater, but you will also have to apply a jumper on connector P34 on the IQ2020 main board. This heater is designed for the following models: Model Start SER# End SER# SS, KK 1F1001 current GG 3G1001 current