Watkins Heater Relay Board - 77119

Item #: 77119

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Place your order before 2:00 PM and we'll drop it off on your doorstep today! Orders placed after 2:00 PM will be delivered the next day. Every delivery includes a free digital water analysis.

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Place your order before 2:00 PM and we'll have it ready for pick-up today. Orders placed after 2:00 PM will be ready the next day.


Sunplay - Ogden
216 N 700 W
Building 4C - Bay 5
Ogden, UT 84404
Store hours:
9am - 5pm, M-F

Las Vegas

Sunplay - Las Vegas
2950 E Sunset Rd
Las Vegas, NV 89120
Store hours:
10am - 6pm, M-F
10am -4pm, Weekends

Item Details

Watkins Heater Relay Board - 77119


This heater relay board has been upgraded for use with all IQ2020 control boxes from 2001 through early 2009. By creating a more effective way to connect the relay board to the heater's power cord, electrical stress is reduced and the components' last longer due to better voltage transfer. In this new design, the heater cord's black wire attaches to the H1 position of the larger gray terminal block. The white wire from the heater's power cord attaches to a separate, smaller gray terminal block. Ground wire attachment does not change.

A couple of symptoms to tell if the board has failed are as follows: 1) the IQ2020 control box shows a red "HTR ON" LED when no power is being sent to the heater and 2) there is charring on the front or back of the heater board.


  • Compatible with Caldera, Hot Springs, Tiger River, Lime Light spas from 2001 to early 2009
  • For use with IQ 2020 control system
  • Replaces circuit board 74618

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