Problem Possible Cause or
Symptom
Test Procedure Solution
• No Power to
Unit
• HRV/ERV
does not turn
on.
• Speed Control
green LED
light does not
come on.
• Main power is not
energized.
• HRV/ERV power
cord not fully
inserted.
• HRV/ERV or wall
control in the OFF
position.
• Poor contact
between
connections on high,
low voltage and door
switch.
• Check power connection, fuses
or circuit breakers.
• Ensurepowercordisrmly
inserted.
• Ensure HRV/ERV and or wall
controls are in the ON position.
• Remove all controls connection
leading to unit.
• Continuity test of the units
power cord.
• Consultcertied
technician to insure
proper installation of
main power.
• Remove and re-insert
powercordrmly.
• Remove door and locate
the area were the switch
compresses the door
sealant. Insert behind
door sealant a metal
edge or small screw to
insure proper contact
between door safety
switch and access door.
• Un-plug HRV/ERV,
remove access panel
from motor mounts
andpressrmlyonall
connections.
• Replace AC power cord.
• During motor
selection
on Speed
Control while
in balancing
mode unit
(shut off), goes
to low speed)
or into(INTER
mode) once
the (+ / - )
buttons are
pressed.
• Speed Control board
not responding.
• Balancing mode has
been locked.
• Un-plug unit for 30 seconds to
re-boot.
• Reactivate balancing mode and
select motor and press ( + / - )
buttons.
• On the Speed Control
press and hold both
the ( + / - ) buttons for
15 seconds or until you
receive a solid green
light. This will reset HRV/
ERV back to factory
default mode.
Note: Unit must be re-
balanced to ensure
maximum performance.
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 qualied service technician.
TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—17
36
Troubleshooting
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