Broan ERV140 ECM Guia De Instalacion página 20

9. TROUBLESHOOTING
If the unit does not work properly, reset the unit by unplugging it for one minute and then replug it. If it still not working properly,
refer to table below.
If the LED of the unit is flashing, this means the unit sensors have detected a problem. See the table below to know where the problem
occurs on the unit.
LED E
SIGNAL
LED flashes GREEN • Outdoor thermistor error
LED flashes AMBER • Damper error
LED flashes RED • Motor error or bad contact
P
ROBLEMS
The error code E1 is
1 displayed on VT8W or
VT7W wall control screen.
There is no outside
temperature displayed on
2
__
VT8W wall control screen
.
VT8W or VT7W wall
control screen alternates
3
between normal display
and E3.
The wall control does not
4
work.
RROR TYPE
of J11 connector
P
OSSIBLE CAUSES
• Unit not compatible with control.
• The wires may be in reverse position.
• The wires may be misconnected.
• The wires may be broken.
• The unit is in error.
• RED wire in control cable damaged
or misconnected.
• The VT8W or VT7W wall control
may be defective.
• Unit integrated control is set to low
or high speed (AMBER or GREEN
continuous LED).
• Unit not compatible with control.
• The wires may be in reverse position.
• The wires may be misconnected.
• The wires may be broken.
• Defective wall control.
A
CTION
• Ensure J12 connector is properly connected
and its wires are not damaged. If they are
correct, replace the thermistor.
• Go to point 7 in next table.
• Ensure J11 connector is properly connected. If
it is properly connected, see Section 8 A or 8 B,
according to unit model.
Y
OU SOULD TRY THIS
• Check table on page 2 for control compatibility.
• Ensure that the color coded wires have been connected to
their appropriate places.
• Ensure the wires are correctly connected.
• Inspect every wire and replace any damaged ones. If wires
are hidden into walls, test the control using a shorter wire.
NOTE: At its very start-up or after a power failure, it takes some
minutes before the outdoor temperature appears on
screen. The shortest delay is obtained when the wall
control is set on MIN or MAX in VENT Mode.
• Check the unit LED to see if it is flashing; if so, refer to the
previous table.
• Ensure the RED wire is not damaged and is properly
connected.
• Replace the VT8W or VT7W wall control.
• Press on the integrated push button until the LED turns off.
• Check table on page 2 for control compatibility.
• Ensure that the color coded wires have been connected to
their appropriate places.
• Ensure the wires are correctly connected.
• Inspect every wire and replace any damaged ones.
• Replace the wall control.
20
U
NIT STATUS
Unit works but will defrost
frequently.
Unit does not work.
Unit does not work.