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1.800.627.4499
EV-Series Premium
ERV
FACTORY ASSISTANCE
7.4 INADEQUATE OR REDUCED AIRFLOW FROM THE EV PREMIUM
If the unit has power and both fans are running, use a manometer to check the pressure
differential across the core. See Section 6.3 Using a Manometer in this manual. The results of
a pressure differential test will provide correct information on how much air the unit is moving
and also how the volume of air compares to when the unit was first installed. Check both low
speed and high speed settings by changing the jumpers on the low voltage terminal strip, as
shown in section 4.8 in this manual. Check ducts for bends, blockages, or leaks.
7.5 EV PREMIUM FAILS TO RUN IN EITHER LOW SPEED OR HIGH SPEED MODE
The low-speed and high-speed modes operate independently of each other so there can be a
failure in just one mode and it does not appear in the second mode. If one mode does not work,
the problem can be isolated to either the controlling device or to an internal failure by bypassing
the controlling device.
u
Remove all wiring from the terminal strip as shown in Section 4.8 of this manual. Mark the
wires so they can be reconnected in their proper locations.
u
With no jumper present, check for proper operation.
u
Install a jumper wire from the 24 VAC terminal to the High Speed terminal. Check for proper
operation. Remove the jumper wire and reinstall the control device wiring.
7.6 NO APPARENT REASON FOR LOW AIRFLOW
The final step in troubleshooting an ERV problem is to reset the fan potentiometers. Use a
manometer and follow the instructions in Section 6.3 Using a Manometer in this manual.
Restore the pressure differential settings to their original airflow settings (CFM), as recorded in
Section 5.1.
In the unlikely event that you need assistance from the factory for a specific issue, make sure
that you have the information called for in the Unit Information page in the front of this manual.
The person you speak with at the factory will need that information to properly identify the unit.
To contact RenewAire Customer Service:
Call 800-627-4499
Email:
8.0 FACTORY ASSISTANCE
