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  1. J

    LT400 Laars heater - fan won't come on

    Thank you for the welcome message! I checked the wiring for the motor and followed it back to the ignition controller (Fenwal) Not sure how to determine if the lack of fan power is because of a problem in the ignition controller itself or if the electronic controller is not telling the...
  2. J

    LT400 Laars heater - fan won't come on

    Greetings - I am trying to get my Laars LT400P-L pool heater going again. It used to work, but has not been used in 3-4 years (house rented out). The pool has been in use the whole time. When I turn on the heater (on spa or pool setting) nothing happens for about 2-1/2 minutes and then I get...