Troubleshooting - Honeywell TrueFRESH ERV/HRV Série Guide D'installation

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 qualifi ed service technician.
Problem Possible Cause or
Symptom
• No Power to • Main power is not
Unit energized.
• HRV/ERV • HRV/ERV power
does not turn cord not fully
on. inserted.
• Speed Control • HRV/ERV or wall
green LED control in the OFF
light does not position.
come on. • Poor contact
between
connections on high,
low voltage and door
switch.
• During motor • Speed Control board
selection not responding.
on Speed • Balancing mode has
Control while been locked.
in balancing
mode unit
(shut off), goes
to low speed)
or into(INTER
mode) once
the (+ / - )
buttons are
pressed.
36
Test Procedure
• Check power connection, fuses
or circuit breakers.
• Ensure power cord is fi rmly
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.
• Un-plug unit for 30 seconds to
re-boot.
• Reactivate balancing mode and
select motor and press ( + / - )
buttons.
TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—13
Solution
• Consult certifi ed
technician to insure
proper installation of
main power.
• Remove and re-insert
power cord fi rmly.
• 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
and press fi rmly on all
connections.
• Replace AC power cord.
• 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.