Zephyr ZSP-E48AS, Use, Care And Installation Manual

13

T

roubleshooting

TROUBLESHOOTING PROCEDURES FOR SIENA PRO

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 wires on the control board are loose.

3.   Make sure the wires on the control board are 

connected properly.

4.  The switch board and control board wirings are 

disconnected.

4.  Make sure the wirings between the switch 

board and control board are connected 
properly.

5.  The switch board or control board is defective.

5.  Change the switch board or control board.

Light works, but 
blower is not 
turning.

1.   The blower cable is disconnected.

1.   Check all wirings from the blower to be sure 

all cables are connected properly.

2.  The blower is defective, possibly seized.

2.  Change the blower.

3.  The thermally protected system detects if the 

blower is too hot to operate and shuts the blower 
down.

3.  The blower will function properly after the 

thermally protected system cool down.

4.  The switch board or control board is defective.

4.  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.

The unit is 
whistling.

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2.   The duct pipe connections are not sealed or 

connected properly.

2.   Check the duct pipe connections to be sure all 

connections are sealed properly.

The blower is 
working, but the 
lights are not.

1.  Defective halogen bulb.

1.  Change the halogen bulb.

2.  The halogen bulb wire is loose.

2.  Check bulb wire connections at the control 

board and the light bulbs. Reconnect any 
loose wires.

The unit turns on 
by itself.

1.   A spot light or kitchen lamp is shining directly 

onto the switch controls.

1.   The switch controls are light sensative. A 

direct light source onto the switch controls 
may disrupt switch functions. 

The speed levels 
of the blower 
sound the same.

1.   Using the wrong size of ducting. 

1.   Change the ducting to at least 10” or higher.

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 

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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 10” or higher.

Mesh Filter is 
vibrating.

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1.  Make sure the metal clips in the handle are 

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2.   Filter spring clip is loose or broken.

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