Tr
oubleshooting
19
TROUBLESHOOTING PROCEDURES FOR ZPI
Issue
Cause
What to do
After installation,
the unit doesn’t
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1. The power source is not turned ON.
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power is ON.
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is not connecting properly.
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connected properly.
3. Glass canopy is closed.
3. Glass canopy must be open to operate blower
and lights.
4. The switch board and control board wirings are
disconnected.
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board and control board are connected
properly.
5. The switch board or control board is defective.
5. Change the switch board or control board.
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blower is not
turning.
1. The blower is defective, possible seized.
1. Change the blower.
2. The thermally protected system detects if the
blower is too hot to operate and shuts the blower
down.
2. The blower will function properly after the
thermally protected system cool down.
3. Damaged capacitor.
3. Change the capacitor.
4. The blower wire is not connected.
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molex connector.
The unit is
vibrating.
1. The blower is not secure in place.
1. Tighten the blower screws in place.
2. Damaged blower wheel.
2. Change the blower.
3. The hood is not secured in place.
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The blower is
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lights are not.
1. Defective halogen bulb.
1. Change the halogen bulb.
2. The light bulb is loose.
2. Tighten the light bulb.
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The hood is
not venting out
properly.
1. The hood might be hanging too high from the
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the bottom of the hood within 24” and 32”
range.
2. Wind from opened windows or opened doors in
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of the hood.
2. Close all the windows and doors to eliminate
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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 correct size.
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vibrating.
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Summary of Contents for Pisa ZPI-E24AG
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