Broan ERV110S Manual De Uso página 20

11. TROUBLESHOOTING (
P
ROBLEMS
Unit does not work (LED
not lit on power up).
5
Auxiliary control does not
work.
6
The damper system
does not work
(AMBER error code).
7
' )
CONT D
P
OSSIBLE CAUSES
• Unit is unplugged.
• No power to power outlet.
• The fuse may be defective.
• J10, J9, or J8 connector(s) may be
unplugged.
• The transformer may be defective
(no 9.5 VAC between J8-4 and J8-5).
• The PCB may be defective.
• The wires may be in reverse postion.
• The wires may be misconnected.
• The wires may be broken.
• The VB60W, VB20W or 59W button
may be defective.
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.
Y
OU SOULD TRY THIS
• Make sure the unit is plugged.
• Test the power outlet with another electrical device
(e.g.: a lamp). If it does not work, call an electrician.
• Check if fuse F1 (located on the PCB) is blown. In that case,
replace fuse F1 as per product nameplate.
• Check the connection of J10, J9, and J8 connector(s).
• With unit powered and J9 connected, check if there is about
9.5 VAC between transformer connector J8-4 and J8-5
(YELLOW wires). If no, change the transformer.
• Unplug the unit. Disconnect
the main control and the
auxiliary control(s) (if need
be). Jump G and B terminals.
Plug the unit back and wait about 10 seconds. If the motors
run on high speed and the damper opens, the circuit board
is not defective.
• 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
terminals. If the unit switch
to high speed, remove the
auxiliary 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.
• 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 (entire port assembly).
• 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.
20
NO C NC I OC OL Y R G B
VE0097
and OC
NO C NC I OC OL Y R G B
VE0098