Broan ERV110S Manual De Uso página 21

11. TROUBLESHOOTING (
P
ROBLEMS
A. The supply motor does
not work, but exhaust
motor works.
B. The integrated control
LED flashes RED.
8
' )
CONT D
P
OSSIBLE CAUSES
• The supply motor may be defective.
• The supply motor capacitor or the
PCB may be defective.
• The exhaust motor may be defective.
• The exhaust motor capacitor may be
defective.
• Tranformer wire(s) bad connection.
• The transformer or the PCB may be
defective.
Y
OU SOULD TRY THIS
• Plug supply motor to J5 connector and exhaust motor to
J4 connector. If the integrated control LED flashes RED,
the supply motor is defective. If exhaust motor works, plug
back supply motor to J4 connector and exhaust motor to J5
connector, then check for supply motor capacitor validity.
• Plug supply motor capacitor to J7 connector and exhaust
motor capacitor to J6 connector. If the integrated control
LED flashes RED, the supply motor capacitor is defective. If
there is no change, the PCB is defective.
• Plug exhaust motor to J4 connector and supply motor to J5
connector. If supply motor works but exhaust motor does
not, exhaust motor is defective. If exhaust motor works, plug
back supply motor to J4 connector and exhaust motor to J5
connector, then check for exhaust motor capacitor validity.
• Plug exhaust motor capacitor to J6 connector and exhaust
motor capacitor to J7 connector. If exhaust motor works
but supply motor does not, the exhaust motor capacitor is
defective. If there is no change, check validity of transformer
or PCB.
• Check J8 and J9 connectors, as well as BLUE and RED
wire connections from J9.
• Move JU1 jumper from pins 2 and 1 to pins 2 and 3. Set the
unit on high speed. If exhaust motor works, the transformer
is defective. If it still does not, change the PCB..
21