Watkins Main Circuit Board, For IQ2020 System, 2001-2009.5, 77087

Watkins Main Circuit Board, for IQ2020 System, 2001-2009.5, 77087 Hot Springs/Watkins Main Circuit Board, for the IQ2020 System, 2001-2009.5 Year Model. OEM part number 77087. This motherboard is also a replacement option for the following Hot Springs, Watkins, Caldera, Tiger River and Lime Light Spas board part numbers: IQ2020 2005 M2E1272, 3-72-8001, 73223, 1310701-1 Note: This IQ 2020 circuit board (motherboard) does not include the heater board or plastic enclosure. This is the main circuit board (mother board) only. This motherboard does not have thermistor ports on the right side of the board like the first generation 2001-2002 motherboards.

The control thermistor and hi-limit thermistor connect directly onto this motherboard at the top edge. If your current (2001-2002) IQ2020 control box has thermistor ports on the right side exterior of the control box, then you will need different thermistors. One 39205 and one 39204 in addition to this motherboard. This replacement motherboard does come with a pressure switch bypass item 72768. Something has to be plugged into the P34 Port, labeled Pressure Switch on this board, in order for the spa to start heating.

Either your existing heater has a gray cable that plugs into this port or your existing board has this jumper installed so you can remove it and install it on this new board.