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  1. T

    Mastertemp 400 Service Heater Light on, system not firing

    Hey Allen, You are the best. I was able to figure it out. the Fan was clogged from mice debris. Knock on wood, it's been running for about an hr. Many Thanks
  2. T

    Mastertemp 400 Service Heater Light on, system not firing

    Thanks Allen! I'm not sure I'm following. There are no LED messages on the board. It's just the light that is on.
  3. 73802645434__70848935-9E85-4E8A-A921-2F7341C1246C.jpeg

    73802645434__70848935-9E85-4E8A-A921-2F7341C1246C.jpeg

    • Turbowilly
    • Media item
    • Comments: 0
    • Category: Pool Equipment
  4. T

    Mastertemp 400 Service Heater Light on, system not firing

    Hi, new to TFP. I have a 4 year old MasterTemp 400 Heater. Currently, I turn the heater on and the Service Heater Light turn-on but the unit does not fire. I check the wires for mice damage and found none. I also check the OHMs on the Thermistor, Pressure Switch and the Hi Limit Switch. The Hi...
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