Broan ERV70S Guia De Instalacion página 20

10. T
ROUBLESHOOTING
Problems
7 The damper system
does not work
(AMBER error code).
8 Optional auxiliary control
does not work OR
its indicator light
does not stay on.
9 The blower motor does not
work.
10 The integrated control push
button does not work.
( ' )
CONT D
Possible causes
At power up, no RED LED.
At power up, LED lights RED and
there is a clicking sound coming from
electrical compartment, but damper
does not move:
• Ice or other things hindering the
damper movement.
• J12 unconnected or bad contact.
• Wrong connection of J8.
• The transformer may be defective
(no 24 VAC between J8-1 and J8-2).
• The damper actuator may be defective.
Damper moves but does not stop when
supposed to:
• Damper motor turns on reverse side.
• Bad connection of J12 connector.
• Damper PCB defective or damper motor
stripped gear.
• The main PCB is defective.
• The wires may be in reverse position.
• The wires may be misconnected.
• The wires may be broken.
• The auxiliary control may be defective.
• The fuse may be defective.
• The motor or capacitor may be defective.
NOTE: The unit must be unplugged to
perform this test.
• The 30-second boot sequence is not
completed.
You should try this
• See point 5.
• Remove ice or hindering elements.
• Check J12 connection (both harness side and board
side).
• Check J8 connection.
• With unit powered and J9 connected, check if there
is about 20-24 VAC between transformer connector
J8-1 and J8-2 (ORANGE wires). If no, change the
transformer.
• Replace the damper system.
• Facing the damper motor shaft, the motor should
turn counterclockwise. If not, replace the damper
system.
• Check J12 connection (both harness side and
board side).
• Replace the damper system.
• Replace the main PCB.
• 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 that is damaged.
If wires are hidden into walls, test the control using a
shorter wire.
• Jump the OL and OC
terminals. If the unit
switch to high speed,
remove the push button
and test it right beside the unit using another shorter
wire. If it works here, change the wire. If it doesn't,
change the auxiliary control.
• Unplug the product from the outlet. Check if fuse F1
(located on PCB) is blown. In that case, discontinue
using the unit and contact technical support.
• Using a multimeter, check the ohms value on motor
connector. For BLUE and BLACK motor wires, the right
value is ± 68 ohms. For BLUE and BROWN motor
wires, the right value is ± 58 ohms. For BROWN and
BLACK motor wires, the right value is ± 126 ohms. If
the ohms values are the same, the motor is not defective.
Replace the motor capacitor.
• See Section 5.1 Booting Sequence.
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NO C NC I OC OL Y R G B
VE0098