Watkins Caldera Spas IQ2020 Main Circuit Board (77087)

3-60-0019 / MFG #77119
Heater Relay Board

Factory Replacement For:

• Hot Spring
• Tiger River
• Limelight
• 2001-2009.5

Replacement Option For:

• MFG # 73223

** Techical Notes:
1) You must purchase new sensors if you're replacing a first generation motherboard (2001-2002) with sensors that are connected directly to the ports on the right side of the exterior of the control box.

• 05-60-5009PK Hi-Limit
• 5-60-5010PK Temp Sensor

2) This circuit board does not come with a Pressure Switch Bypass jumper. The jumper must be plugged into P34 port labeled pressure switch. Use the existing gray cable from the heater that plugs into the P34 port or if your old circuit board has this jumper installed, you can remove it to install on the new board.