Zephyr ZMD-M90AS Installation Guide download pdf (Page 19)

Troubleshooting

TROUBLESHOOTING PROCEDURES FOR MODENA ISLAND

Issue Cause What to do

After installation,

the unit doesn’t

work.

1. The power source is not turned ON. 1. Make sure the circuit breaker and the unit’s

power is ON.

2. The power line and the cable locking connector

is not connecting properly.

2. Check the power connection with the unit is

connected properly.

3. The switch board and control board wirings are

disconnected.

3. Make sure the wirings between the switch

board and control board are connected

properly.

4. The switch board or control board is defective. 4. Change the switch board or control board.

Light works,

but motor is not

turning.

1. The motor is defective, possibly seized. 1. Change the motor.

2. The thermally protected system detects if the

motor is too hot to operate and shuts the motor

down.

2. The motor will function properly after the

thermally protected system cool down.

3. The switch board or control board is defective. 3. Change defective part.

The unit is

vibrating.

1. The motor is not secure in place. 1. Tighten the motor in place.

2. Damaged blower wheel. 2. Replace the blower.

3. The hood is not secured in place. 3. Check the installation of the hood.

4. The switch board or control board is defective. 4. Change defective part.

The motor is

working, but the

lights are not.

1. Defective LED bulb. 1. Change the LED bulb.

2. The LED bulb wire is loose. 2. Connect the LED bulb wire.

The hood is

not venting out

properly.

1. The hood might be hanging too high from the

cook top.

1. Adjust the distance between the cook top and

the bottom of the hood within 26” and 34”

range.

2. The wind from the opened windows or opened

doors in the surrounding area are affecting the

ventilation of the hood.

2. Close all the windows and doors to eliminate

the outside wind ﬂ ow.

3. Blockage in the duct opening or ductwork. 3. Remove all the blocking from the duct work or

duct opening.

4. The direction of duct opening is against the wind. 4. Adjust the duct opening direction.

5. Using the wrong size of ducting. 5. Change the ducting to at least 8” or higher for

the internal blower.

Mesh Filter is

vibrating.

1. Mesh ﬁ lter is loose. 1. Make sure the metal clips in the handle are

not stuck. Or replace the mesh ﬁ lter.

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Zephyr ZMD-M90AS Installation Guide Page 19

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