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  1. W

    Hayward pool heater automation

    Hi, I replaced my Jandy Laars LX 400 heater with a Hayward FDN 400 natural gas heater heater over the weekend. The Jandy heater had 2 Jandy actuator valves controlling water flow when spa or pool heating is selected. I however do not see an option on the Hayward heater to automate the switching...
  2. W

    Temp sensor Heater issue

    I am getting a service light for temp sensor on a Jandy LX 400 heater. I have replaced the control board, temp wiring harness and both 135 and 150 sensors. What else can I check?
  3. W

    Jandy LX 400 heater issue

    Hi, I have had it with my Jandy LX 400,000 btu heater. I inherited the heater with the pool outside of the 2 year warranty. In the past 2 years I have had 4 LCD panels fail. most only after 3-4 months. Panel looks ok but the temperature sensor reads off the scale 120+ degrees - I replaced wiring...
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