73223 IQ2020 Control Box
This item is no longer avalible from Watkins. You can purchase the main circuit board, Part number 77087
Replacement IQ2020 for Hot Spring, Tiger River and Limelight 2001-2009 Spa Models
The IQ 2020 control box contains the electronic components that control the spa’s functions including heater relay, heater interlock relay, jet relay, high limit circuit, light circuit, etc. The IQ receives input from the control head on which function is to be activated and then activates that specific function.
Additionally, the IQ contains the circuitry to stop spa operation if high limit circuit senses a problem.