Broan ERV140TE Installation Manual page 20

9. TROUBLESHOOTING (
P
ROBLEMS
The supply and/or exhaust
motor do not work.
5
The defrost cycle does
not work (the fresh air
duct is frozen) OR the
6
fresh air distributed is very
cold.
The integrated control
7
push button does not work.
If the problem is still not solved, reach our Technical Support:
' )
CONT D
P
OSSIBLE CAUSES
• The fuse may be defective.
• The jumper JU1 may be in wrong
position or missing.
• Jumper J11 may be missing.
• The circuit board or transformer may
be defective.
• The motor(s) may be defective.
• Ice deposits may be hindering the
damper operation.
• The damper rod or the port damper
itself may be broken.
• The damper actuator or circuit board
may be defective.
• The 30-second boot sequence is not
completed.
Broan-NuTone LLC
Technical Support
Telephone: 1-800-637-1453
Fax: 1-262-673-8709
Y
OU SOULD TRY THIS
• Check if fuse F1 is blown. In that case, replace fuse F1 as
per product nameplate.
• Make sure that jumper is properly located as per wiring
diagram in Section 6 Wiring diagrams.
• Make sure there is a jumper on connector J11.
• Press on the integrated control push button until the unit
turn on high speed (the LED will light GREEN). Using a
multimeter, check the voltage on J4-1 and J4-2 (for supply
motor), and on J5-1 and J5-2 (for exhaust motor). If both
readings are 120 VAC, the circuit board is not defective. If one
or both readings are not 120 VAC, change the transformer. If
no voltage is present, change the circuit board.
• If the voltage reading is 120 VAC on J4 or J5, change the
defective motor.
• Remove the ice.
• Inspect these parts and replace if necessary.
• See point 2.
• See Section 4.1 Units Booting Sequence.
20