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srollinsSep 14, 2025
How to fix HRV out of balance in Fantech Fan?
- DDr. Hailey GreenSep 15, 2025
To address an out-of-balance HRV in your Fantech Fan, have a contractor balance HRV airfolws.
How to fix HRV out of balance in Fantech Fan?
To address an out-of-balance HRV in your Fantech Fan, have a contractor balance HRV airfolws.
Why is the air from my Fantech Fan too dry?
The air from your Fantech Fan may be too dry if the dehumidistat control is set too low or the HRV is out of balance. You can increase the desired level of humidity and change the ventilation mode from continuous to standby. It is also recommended to have a contractor balance the HRV airflows.
What to do if Fantech Fan has poor air flows?
If your Fantech Fan has poor air flows, you can try the following: * Clean exterior hoods or vents if the 1/4" (6mm) mesh on the outside hoods is plugged. * Remove and clean the filter if filters are plugged. * Remove and clean the core if it is obstructed. * Check and open indoor grilles if they are closed or blocked. Also, ensure that an electrician checks the supply voltage if there is an inadequate power supply at the site and check duct installation if ductwork is restricting airflow. Increase the speed of the HRV if there is an improper speed control setting. If the HRV airflow is improperly balanced or ducting has fallen down or been disconnected from the HRV, have a contractor address these issues.
Why is my Fantech VHR 2004 Fan supply air feels cold?
If the supply air from your Fantech Fan feels cold, it could be due to the following reasons: * The location of supply grilles may be causing airflow to irritate occupants. Relocate the grilles high on the walls or under the baseboards, and install ceiling-mounted diffusers or grilles to avoid directly spilling supply air on occupants. You can also turn down the HRV supply speed. A small duct heater (1kW) could be used to temper the supply air. Ensure that furniture placement or closed doors are not restricting air movement. * If the outdoor temperature is extremely cold, and supply air is ducted into the furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
What to do if Fantech VHR 2004 Fan has persistent condensation on window?
If you notice persistent condensation on windows when using your Fantech Fan, consider the following: * Reduce the desired level of humidity, if there is an improper adjustment of the dehumidistat control, and combine this step with the use of continuous exchange mode. * Have a contractor balance the HRV if the HRV is out of balance. * Open curtains or blinds to improve air circulation near windows.
What causes HRV and/or ducts frosting up in Fantech VHR 2004?
If your Fantech Fan's HRV and/or ducts are frosting up, have an HVAC contractor balance the HRV airflows. Note that minimal frost build-up is expected on cores before the unit initiates defrost cycle functions.
Why does the supply air feel cold from my Fantech VHR 2004 Fan?
If the supply air from your Fantech Fan feels cold, it could be due to the location of the supply grilles, which might irritate the occupant. Consider relocating the grilles higher on the walls or under the baseboards, or install ceiling-mounted diffusers or grilles to avoid directly spilling the supply air on the occupant. You could also turn down the HRV supply speed or use a small duct heater (1kW) to temper the supply air. Additionally, ensure that furniture or closed doors aren't restricting air movement 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.
How to fix air that is too dry with Fantech VHR 2004?
If the air is too dry when using your Fantech Fan, it might be because the dehumidistat control is set too low. Try increasing the desired level of humidity and change the ventilation mode from continuous mode to standby.
Why does supply air feel cold from my Fantech Fan?
If the supply air from your Fantech Fan feels cold, reposition the supply grilles high on the walls or under the baseboards, and install ceiling-mounted diffusers to avoid direct airflow on occupants. Reduce the HRV supply speed. If supply air is ducted into the furnace return, run the furnace fan continuously. Also, ensure furniture or closed doors aren't restricting air movement.
How to improve poor air flows in my Fantech VHR 2004 Fan?
To improve poor air flows with your Fantech Fan, begin by cleaning the exterior hoods or vents and removing and cleaning the filter and core. Ensure indoor grilles are open and not blocked. Have an electrician check the power supply voltage. Check the duct installation and increase the HRV speed. If the issue persists, have a contractor balance HRV airflows or reconnect ducting.
General| Model | VHR 2004 |
|---|---|
| Frequency | 50Hz |
| Tilt Adjustment | Yes |
| Type | Desk Fan |
| Voltage | 220V |
Defines Heat Recovery Ventilators and their purpose in whole-house ventilation.
Explains the operating principle of HRVs, including heat recovery core function.
Explains model number nomenclature and describes different port configurations.
Discusses humidity control, condensation, and recommended ventilation for winter.
Discusses optimal HRV operation and humidity control settings for other seasons.
Describes continuous operation at selected fan speeds for constant air exchange.
Describes standby mode and activation via optional remote controls.
Explains automatic defrost cycles for different HRV models.
Covers MDEH and RTS series controls for humidity and timed ventilation.
Covers EDF series controls for various operating modes and basic functions.
Describes digital display, power, mode selection, speed, and cycle controls.
Instructions for cleaning and maintaining filters and the heat recovery core.
Maintenance for fan, unit interior, drain line, and outside hoods.
Addresses problems related to air being too dry or too humid, and window condensation.
Troubleshooting poor airflow, frost buildup, and duct-related problems.
Interpreting control board LED light codes for diagnostics.
Summary of recommended maintenance tasks and their frequency.
Information on warranty coverage, limitations, and responsibilities.
Safety warnings and considerations before installing the unit.
Warnings about potential interaction with vented combustion appliances.
Method for calculating required airflow based on house volume.
Alternative method for calculating airflow based on room classification.
Provides physical dimensions and airflow path diagrams for SHR models.
Presents fan performance curves and electrical power specifications.
Provides physical dimensions and airflow path diagrams for VHR models.
Presents fan performance curves and electrical power specifications for VHR models.
Guidance on selecting the optimal installation location and general installation tips.
Instructions for mounting the HRV unit and installing the condensate drain line.
Recommendations for positioning intake and exhaust weatherhoods.
Process for connecting flexible ducts to weatherhoods and securing them.
Best practices for ductwork design and connecting to the HRV unit.
Guidance on locating supply and exhaust air grilles within the home.
Specific considerations for ducting the fifth port on 'R' models.
Diagram and notes for a recommended fully dedicated system in new construction.
Connecting HRV to furnace cold air return for ventilation.
Illustrates ductwork layout for a partially dedicated system.
Connecting HRV supply and exhaust to furnace cold air return.
Shows ductwork for simplified installation option 1.
Connecting HRV to furnace cold air return and supply air side.
Illustrates ductwork for simplified installation option 2.
Describes the unit's 45-second self-diagnostic during initial power-up.
Explains the necessity of airflow balancing and potential issues if unbalanced.
How to adjust airflow using the built-in damper on the fresh air collar.
Procedure for measuring airflow velocity using a station or grid method.
Overview of basic (EDF1, EDF2) and advanced (MDEH, EDF5) control functions.
Describes the operation of RTS2 and RTS3 timer controls.
Important notes and operational tips for various control systems.
Wiring diagrams for common accessory controls like EDF, RTS, and Dehumidistats.
General notes on wiring polarity and timer connections.
Wiring connections to standard and alternative HVAC system thermostat controls.
Specific wiring for systems with cooling and associated safety cautions.
Addresses problems related to air being too dry, too humid, and window condensation.
Troubleshooting poor airflow, frost buildup in ducts, and other air movement issues.
Interpreting control board LED light codes for system diagnostics.
Summary of recommended maintenance tasks and their frequency for the HRV.
Details on warranty coverage, limitations, and purchaser responsibilities.
