Fantech 250H-EC User Manual (English)

Questions and Answers:

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Lisa HansonAug 20, 2025
What to do if there's persistent condensation on the window with my Fantech 250H-EC?
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  Robert BoydAug 21, 2025
  Persistent condensation on windows when using a Fantech Fan can be due to a few reasons. The dehumidistat control may be improperly adjusted, so reduce the desired level of humidity and combine this step with the use of continuous exchange mode. The HRV might be out of balance, so have a contractor balance the HRV. Poor air circulation near windows can also contribute; open curtains or blinds to improve airflow.
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John AndrewsAug 25, 2025
Why does the supply air feel cold from my Fantech 250H-EC Fan?
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  David MartinezAug 25, 2025
  If the supply air from your Fantech Fan feels cold, it could be due to a couple of reasons. The supply grilles may be poorly located, causing the airflow to irritate occupants; relocate the grilles high on the walls or under the baseboards, or install ceiling-mounted diffusers or grilles to avoid directly spilling the supply air on occupants (e.g., over a sofa). You can also turn down the HRV supply speed. A small duct heater (1 kW) could be used to temper the supply air. Placement of furniture or closed doors may restrict the movement of air in the home. If the outdoor temperature is extremely cold and the supply air is ducted into the furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
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Kimberly RobinsonAug 27, 2025
Why are my Fantech HRV and/or Ducts frosting up?
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  Cynthia WallaceAug 27, 2025
  If your Fantech Fan or its ducts are frosting up, it could be due to a couple of reasons. The HRV airflows might be improperly balanced, so have an HVAC contractor balance the HRV airflows. Alternatively, there may be a malfunction of the HRV defrost system; note that minimal frost build-up is expected on the core before the unit initiates defrost cycle functions.
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Jonathan GentryAug 31, 2025
Why is there condensation or ice build up in the insulated duct to the outside of my Fantech Fan?
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  Amy ZhangSep 1, 2025
  If you find condensation or ice building up in the insulated duct leading outside from your Fantech Fan, it could be due to an incomplete vapor barrier around the insulated duct; tape and seal all joints. Alternatively, there might be a hole or tear in the outer duct covering; tape any holes or tears and ensure that the vapor barrier is completely sealed.
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Anthony BakerSep 4, 2025
How to fix air that is too dry with my Fantech Fan?
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  zhowellSep 4, 2025
  If the air is too dry when using your Fantech Fan, the dehumidistat control may be set too low. To resolve this, increase the desired level of humidity and change the ventilation mode from continuous mode to standby.
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Kenneth MartinezSep 8, 2025
What to do if the LED is flashing on my Fantech 250H-EC Fan?
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  Lisa LawrenceSep 8, 2025
  If the LED on your Fantech Fan is flashing, it may indicate that no power is being transmitted to the Control Board. Ensure the unit is plugged in. If it is, the transformer may need replacing.