10. T
ROUBLESHOOTING
Problems
5
The blower motor does not
work.
6
The defrost cycle does not
work (the fresh air duct is
frozen) OR the fresh air
distributed is very cold.
7
The integrated control push
button does not work.
If the problem is still not solved, call the nearest approved Service Center. Also, you can reach our Technical Support.
(
'
)
CONT
D
Possible causes
• The fuse may be defective.
• The motor or capacitor may be defective.
NOTE: The unit must be unplugged to
perform this test.
• Ice deposits may be hindering the
damper operation.
• The damper mechanism may be broken.
• The damper actuator or circuit board
may be defective.
• The 30-second boot sequence is not
completed.
You should try this
• Check if fuse F1 (located on PCB) is blown. In that case,
• Using a multimeter, check the ohms value on motor
• Remove the ice.
• Inspect this part and replace if necessary.
• See point 2.
• See Section 5.1 Booting Sequence.
Broan-NuTone LLC
• Technical Support
Telephone: 1-800-637-1453
Fax: 1-262-673-8709
20
replace fuse F1 as per wiring diagram specifications.
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.