Troubleshooting - Honeywell TrueFRESH ERV Professional Installation Manual

Troubleshooting

CAUTION: Servicing the ERV/HRV unit with its electrical circuitry can cause personal
injury. Always make sure that power to the unit is disconnected prior to making any
connections. Failure to disconnect the power could result in electrical shock. Service
should only be performed by a qualified service technician.
Problem
ERV/HRV unit not running
Air is too dry
Air too humid
LED on control panel remains
green
TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—05
Recommended Troubleshooting Steps
1. Verify polarization of electrical receptacle.
2. Verify breaker in electrical box.
3. Verify that the external control or mode selector are activated
to call for ventilation.
4. Unplug the unit and verify that the external control(s) are wired
correctly to the wiring terminal block.
1. Increase humidity level on the dehumidistat.
2. Switch ventilation mode from continuous to intermittent.
3. Install a humidifier.
1. Reduce the humidity level on the controller.
2. Make sure that the clothes dryer is vented to the outdoors.
3. Wait for outside temperature to change. For example, it can be
very humid at times in the summer.
4. Verify balancing of the ERV/HRV unit (see Balancing Steps on
page 25).
If the LED light on the ERV/HRV control panel remains green, the
motors do not energize, and the controls do not operate. This can
indicate that the Polarization in the main AC outlet is inverted
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