CEILING-MOUNTED HOOD TROUBLESHOOTING TABLE
Symptom Diagnostic Test Resolution
Remote control does not
function.
Check the batteries. If necessary, replace with two new AAA batteries.
Perform remote pairing.
1 Verify the blower and lights are turned off.
2
Press and hold on the hood for five seconds.
The LED on the hood flashes twice to indicate that it is
paired.
Hood lights and blower do
not energize. No GFI
circuit.
Verify the house circuit is a 115 VAC, 15 A, dedicated
circuit.
If necessary, contact an electrician to bring the circuit
into specification.
Breaker is open. Close the breaker.
Check voltage at the J-box:
▪ L1 to ground = 115 VAC
▪ N to ground = 0 VAC
▪ L1 to N = 115 VAC
Ensure the L1, N, and ground are correctly connected.
Ensure the connections are tight.
Check voltage at the three-pin connector in the
electrical box.
▪ Pin 1 to pin 2 = 115 VAC
▪ Pin 2 to pin 3 = 0 VAC
▪ Pin 1 to pin 3 = 115 VAC
Replace or repair the electrical connector or wires.
Check voltage at the power board: Pin 1 to pin 2 =115
VAC
Replace or repair the connector from the electrical box
to the power board.
With the blower and lights energized:
▪ Check 115 VAC L to N on the connector (orange)
to the transformer.
▪ Check 115 VAC blue to brown on the terminal
block in the electrical box.
With power off, verify the ribbon cable from the power
board to the touch control is seated correctly:
▪ Ribbon cable connector on power board.
▪ Connector on touch pad.
If the ribbon cable is seated correctly at all points and
there is no voltage out of power board, then the power
board or touch control is bad. Try replacing the power
board first.
Blower motor runs only at
high speed.
Power board fault. Replace the power board.
Hood lights do not work.
One LED is out in the LED light assembly. Replace the LED light assembly.
Unplug the two-pin connector behind the light
support, and check for 12 VDC.
Replace the harness to the hood body.
Ohm out the LED light assembly connector. Verify
there is no short.
Replace the LED light assemblies.
Remove the connector from the secondary side of the
transformer, and check for 12 VDC between the pins
on the transformer.
If no voltage, replace the transformer.
Remove the connector LUX1 from the power board,
and check for 115 VAC from pin 1 to pin 2.
If the blower motor is working, replace the power
board.
Remove the connector from primary side of
transformer, and check for 115 VAC between the
orange wires.
Replace or repair the harness from the power board to
the transformer.
Blower motor does not
run at any speed.
Note: Perform checks for the internal blower motor or
checks for the external/inline blower motor prior to
these checks.
Check voltage at the J-box:
If lights are working, this is likely a short or loose
connection.
Wolf V-Series Cooktop Hoods Service Manual
service.subzero.com
825309 REV. B
11
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