Question about Terminator Aquastar 125FX Tankless Water Heater: FX Hood Horizontal Vent

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The unit continually gets at E2 error code. I have replaced the sensor twice and it still occurs. Can you give me a solution or point me to a repair person somewhere near Zip 64856?

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  • bgrubbs Oct 03, 2008

    I have the same issue with my Aquastart 250sx. Ihave been told to change the sensor, make the vent shorter and install a larger gas line. All three of those is from a differant Bosch tech. I will not be trying the larger gas line, but I wil shorten the vent to see if that helps. I'm gald that I did not change the sensor, since it did not work for you.

  • Anonymous Oct 16, 2008

    We have the same problem. We replaced the entire control unit which solved the problem for one year. We have replaced the sensors twice, shortened the pipe and installed a larger gas line. The whole control unit is very costly and since it has already been replaced once...I doubt we will spend the $300+ to replace it again.

  • Tim Hamlin May 11, 2010

    Your in a area were bosch doesnt show any trained techs. Maybe I can help you. What state are you in? and what model do you have?

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If this is a outdoor unit, and the temp gets below 36F this will always happen, unfortunatley. check the connection of the E2 temp sensor. Maybe its broke inside.

Posted on Jan 19, 2009

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1 Answer

Error code E1 and E4


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https://www.quietside.com/archives/.../Service%20ACC1800C.pdf
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Replacement Parts for Fitness Exercise Equipment at SPORTSMITH

True Treadmill Errors and Service Messages
  • The True 600, 700, 725 and 750 series treadmills are equipped with built-in diagnostics and maintenance reminders that display either an error message or service message as they occur.
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Operation =
Flashing Display Timer = Yes
Turbo =
LED Display = E1
Explanation and Checking points = Indoor unit room thermistor error - Open or Closed Circuit - Check and replace if required

Operation = Yes
Flashing Display Timer = Yes
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Operation =
Flashing Display Timer =
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Operation = Yes
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Replace
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