Roubleshooting - Broan ERV140TE Guia De Instalacion

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 integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the table below to know where
the problem occurs on the unit.
LED
COLOR
LED flashes GREEN
LED flashes AMBER
LED flashes RED
P
ROBLEMS
Unit does not work.
1
The damper actuator
does not work.
2
The wall control does not
work.
3
The Dehumidistat
does not work OR the
20-minute push button
timer does not work OR
4 its indicator light does not
stay on.
E
RROR TYPE
Thermistor error
Damper error
Motor error
P
OSSIBLE CAUSES
• The circuit board may be defective.
• The fuse may be defective.
• The damper actuator
integrated damper mechanism may
be defective.
• The circuit board or the transformer
may be defective.
• The wires may be in reverse position.
• The wires may be broken.
• The wire in the wall OR the wall
control may be defective.
• The wires may be in reverse postion.
• The Dehumidistat or push button
may be defective.
A
CTION
Replace thermistor
Go to point 6
Go to point 8
Y
OU SOULD TRY THIS
• Unplug the unit. Disconnect
the main control and the
optional(s) 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.
• Check if fuse F1 is blown. In that case, replace fuse F1 as
per product nameplate.
or the • Unplug the unit. Disconnect the main control and the optional
controls(s) (if need be). Wait 10 seconds and plug the unit
back. Check if the damper opens. If not, use a multimeter
and check for 24 VAC on J12-1 and J12-2 (in electrical
compartment). If there is 24 VAC, replace the entire damper
assembly.
NOTE: It is normal to experience a small delay (7-8 seconds)
before detecting the 24 VAC signal at starting-up.
This signal will stay during 17-18 seconds before
disappearing.
• If there is no 24 VAC, check for 24 VAC between J8-1 and
J8-2. If there is 24 VAC, replace the circuit board, and if
there is no 24 VAC, change the transformer.
• Ensure that the color coded wires have been connected to
their appropriate places.
• Inspect every wire and replace any that are damaged.
• Remove the wall control and test it right beside the unit
using another shorter wire. If the wall control works there,
change the wire. If it does not, change the wall control.
• Ensure that the color coded wires have been connected to
their appropriate places.
• Jump the OL
terminals. If the unit switches
to high speed, remove the
Dehumidistat or 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
Dehumidistat or the push button.
19
U
NIT STATUS
Unit works but will defrost frequently
Unit does not work
Unit does not work
NO C NC I OC OL Y R G B
VE0097
and OC
NO C NC I OC OL Y R G B
VE0098