HotSpring Spa Control Box IQ 2020 Tiger River, Limelight, 2001-2009.5 Retrofit Kit Replacement for the IQ 2020 Control Box(73223) that was discontinued and was used on all 2001-2009.5 Hot Spring, Tiger River and Limelight spas. HotSpring Spa Retrofit Control Box converting from IQ2000 to IQ2020; contains Circuit Board (77087), Heater Relay Board (77119), Thermistors (39204 and 39205) and Pressure Switch Jumper (72768). In order for this newer style of control box to communicate with your top side control, you also need to purchase the control head (73225). All parts are in Related Products to the right of your screen.
