Range vent hood fan or blower not working: Common Causes & How to Fix

Repair Instructions:

The blower motor makes a humming noise but the fan doesn't spin. This usually means the bearings that allow the motor shaft to spin freely are worn out. Some older, bigger motors have openings to add oil. Try adding oil to the bearings to get the fan spinning freely again. If oiling the bearings doesn't fix it, or if you can't oil the motor, you'll need to replace the exhaust fan motor. Motors without oil spouts need to be replaced when the bearings wear out.

How to Replace Range Vent Hood Exhaust Fan Motor

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Then disconnect the wires leading to the motor.

2. Remove filters or baffles - Remove any filters, baffles or panels that are in the way of accessing the fan motor.
3. Remove fan blades - Use a screwdriver to remove the screws holding the fan blades onto the motor shaft. Carefully remove the fan blades.
4. Remove motor mounting screws - Locate mounting screws or nuts holding the motor in place. Remove them so the motor can be taken out.
5. Disconnect wiring - Disconnect any remaining wiring connected to the motor's wiring harness or terminals.
6. Remove old motor - Carefully maneuver the old motor out of the vent hood. Make note of how it was positioned.
7. Install new motor - Place the new motor into position, lining up any mounting holes or hardware. Reconnect wiring.
8. Secure motor - Replace any mounting screws or hardware to secure the new motor.
9. Replace fan blades - Carefully replace the fan blades onto the new motor shaft in their original positions.
10. Replace baffles and panels - Put back any filters, baffles or access panels.
11. Restore power and test - Restore power to the vent hood. Test that the new motor and fan are working properly.

Repair Instructions:

The blower motor is making a humming sound but the fan is not spinning. This typically means the bearings that allow the motor shaft to spin freely are worn out. Some older, larger motors have openings to add oil. If your motor has these oil spouts, try adding oil to the bearings to get the fan spinning freely again. If oiling the bearings does not fix the issue, or if you cannot lubricate the motor, you will need to replace the exhaust fan motor. Motors without oil spouts need to be replaced when the bearings wear out and cause the humming sound.

How to Replace Range Vent Hood Fan Motor

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Then disconnect the wires leading to the motor.

2. Remove filters or baffles - Remove any filters, baffles or panels that are in the way of accessing the fan motor.
3. Remove fan blades - Use a screwdriver to remove the screws holding the fan blades onto the motor shaft. Carefully remove the fan blades.
4. Remove motor mounting screws - Locate mounting screws or nuts holding the motor in place. Remove them so the motor can be taken out.
5. Disconnect wiring - Disconnect any remaining wiring connected to the motor's wiring harness or terminals.
6. Remove old motor - Carefully maneuver the old motor out of the vent hood. Make note of how it was positioned.
7. Install new motor - Place the new motor into position, lining up any mounting holes or hardware. Reconnect wiring.
8. Secure motor - Replace any mounting screws or hardware to secure the new motor.
9. Replace fan blades - Carefully replace the fan blades onto the new motor shaft in their original positions.
10. Replace baffles and panels - Put back any filters, baffles or access panels.
11. Restore power and test - Restore power to the vent hood. Test that the new motor and fan are working properly.

Repair Instructions:

The blower motor is making a humming noise but the fan is not spinning. This typically means the bearings that let the motor shaft spin freely are worn out. Some older, bigger motors have openings to add oil. If your motor has these oil holes, try adding oil to the bearings to get the fan spinning freely again. If oiling the bearings does not fix the problem, or if you can't lubricate the motor, you will need to replace the blower motor. Motors without oil holes need to be replaced when the bearings wear out and cause the humming noise.

How to Replace Range Vent Hood Blower Motor

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Then disconnect the wires leading to the blower motor.

2. Remove filters or baffles - Remove any filters, baffles or panels that are in the way of accessing the blower motor.
3. Remove fan blade - Use a screwdriver to remove the screw holding the fan blade onto the blower motor shaft. Carefully remove the fan blade.
4. Remove motor mounting screws - Locate mounting screws or nuts holding the blower motor in place. Remove them so the motor can be taken out.
5. Disconnect wiring - Disconnect any remaining wiring connected to the blower motor's wiring harness or terminals.
6. Remove old blower motor - Carefully maneuver the old blower motor out of the vent hood. Make note of how it was positioned.
7. Install new blower motor - Place the new blower motor into position, lining up any mounting holes or hardware. Reconnect wiring.
8. Secure blower motor - Replace any mounting screws or hardware to secure the new blower motor.
9. Replace fan blade - Carefully replace the fan blade onto the new blower motor shaft in its original position.
10. Replace baffles and panels - Put back any filters, baffles or access panels.
11. Restore power and test - Restore power to the vent hood. Test that the new blower motor and fan are working properly.

Repair Instructions:

The vent fan motor is making a humming noise but the fan is not spinning. This typically means the bearings that let the motor shaft spin freely are worn out. Some older, bigger motors have openings to add oil. If your motor has these oil holes, try adding oil to the bearings to get the fan spinning freely again. If oiling the bearings does not fix the issue, or if you can't lubricate the motor, you will need to replace the exhaust fan motor. Motors without oil holes need to be replaced when the bearings wear out and cause the humming noise.

How to Replace Range Vent Hood Vent Fan Motor

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Then disconnect the wires leading to the vent fan motor.

2. Remove filters or baffles - Remove any filters, baffles or panels that are obstructing access to the vent fan motor.
3. Remove fan blades - Use a screwdriver to remove the screws holding the fan blades onto the motor shaft. Carefully remove the fan blades.
4. Remove motor mounting screws - Locate the mounting screws or nuts holding the vent fan motor in place. Remove them so the motor can be taken out.
5. Disconnect wiring - Disconnect any remaining wiring connected to the vent fan motor's wiring harness or terminals.
6. Remove old motor - Carefully maneuver the old vent fan motor out of the vent hood. Make note of how it was positioned.
7. Install new motor - Place the new vent fan motor into position, lining up any mounting holes or hardware. Reconnect wiring.
8. Secure motor - Replace any mounting screws or hardware to secure the new vent fan motor.
9. Replace fan blades - Carefully replace the fan blades onto the new motor shaft in their original positions.
10. Replace baffles and panels - Put back any filters, baffles or access panels that were removed.
11. Restore power and test - Restore power to the vent hood. Test that the new vent fan motor and blades are functioning properly.

Repair Instructions:

Something could be stuck in the blower wheel stopping it from spinning. Or, the blower wheel might be rubbing against the blower housing. To check, try spinning the blower fan by hand. If it doesn't spin freely, look for blockages in the blower wheel. Also make sure the wheel isn't rubbing on the housing. If nothing is blocking it but the wheel still doesn't spin freely, you'll need to replace both the blower wheel and housing. A blower wheel that doesn't spin easily could mean it's damaged and needs replacement along with the housing it sits in.

Repair Instructions:

Something could be stuck in the blower wheel, stopping it from spinning. Or, the blower wheel might be rubbing against the blower housing. To check, try spinning the blower fan by hand. If it doesn't spin freely, look for blockages in the blower wheel. Also make sure the wheel isn't rubbing on the housing. If nothing is blocking it but the wheel still doesn't spin easily, you'll need to replace the blower wheel. A blower wheel that doesn't spin freely could mean it's damaged and needs replacement. Even if it's not obstructed, a tight spinning wheel should be replaced.

How to Replace Range Vent Hood Blower Wheel

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect the wires leading to the blower motor.

2. Remove filters or baffles - Remove any filters, baffles or panels that are obstructing access to the blower wheel.
3. Detach ductwork - Detach any ductwork connected to the blower housing so the wheel can be accessed.
4. Remove blower wheel retaining screw - Locate and remove the screw that secures the blower wheel to the motor shaft.
5. Slide blower wheel off shaft - With the retaining screw removed, carefully slide the old blower wheel off the motor shaft.
6. Install new blower wheel - Carefully slide the new replacement blower wheel onto the motor shaft until it is fully seated.
7. Secure with retaining screw - Insert and tighten the blower wheel retaining screw to secure the new wheel to the shaft.
8. Reattach ductwork - Reconnect any ductwork that was detached from the blower housing.
9. Replace filters and baffles - Put back any filters, baffles or access panels.
10. Restore power and test - Restore power to the vent hood. Turn on the blower and test for proper air movement.

Repair Instructions:

The electronic touchpad controls on modern range hoods can stop working over time. Pressing the touch buttons a lot can wear out the circuits inside. Grease from cooking can also get on the touchpad and keep the buttons from sensing your finger taps. Too much grease can completely block the buttons from working. Electrical storms or power surges can also damage the delicate electronics in the touchpad. If the whole touchpad fails, the range hood fan won't turn on when you try to use it. The fan needs a signal from the touchpad to start running. To fix it, the touchpad usually needs to be replaced if it stops responding or does not work. For touchpads with just some grease, thorough cleaning may help, but touchpads with internal damage need a complete replacement. Regular cleaning and gentle button pressing can help avoid problems.

How to Replace Range Vent Hood Touchpad

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove mounting screws - Remove the small screws that secure the touchpad to the vent hood.
3. Detach touchpad - Gently pry off the old touchpad from the vent hood. Take care not to bend or damage it.
4. Disconnect wiring - At the rear, disconnect any wiring connectors attached to the touchpad.
5. Attach wiring to new touchpad - Connect the wiring to the terminals on the back of the new replacement touchpad.
6. Position new touchpad - Place the new touchpad into position on the vent hood, aligning any screw holes.
7. Secure with mounting screws - Insert and tighten the small mounting screws to secure the new touchpad.
8. Restore power - Restore power to the vent hood.
9. Test operation - Turn on the vent hood and test that the new touchpad powers on and activates fan speeds properly.
10. Reassemble vent hood - Replace any other components or covers that were removed during the repair.

Repair Instructions:

Modern range hoods have electronic touchpad controls and control panels to operate the fan, lights, and other features. Over time, repeatedly pressing the touchpad buttons can wear out the internal circuits and components, causing them to fail. Cooking grease and splatter can also get on the touchpad surface, interfering with the button sensors so they stop responding to finger presses. Enough grease residue can completely insulate the touch sensors. Electrical surges or storms can damage the sensitive electronics inside the touchpad and control panel as well. If the control electronics fail entirely, buttons and controls will become unresponsive, preventing the range hood fan and blower from turning on when activated. The fan requires a signal from the controls to start running. Replacing a faulty touchpad or control panel is typically needed to restore function. For touchpads with only minor grease buildup, a thorough cleaning may fix it. But touchpads with internal electronic failure will require complete replacement parts to get the range hood working again.

How to Replace Range Vent Hood Touchpad and Control Panel

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
2. Remove mounting screws - Remove the screws that secure the control panel/touchpad assembly to the underside of the vent hood.
3. Detach control panel - Carefully lower the control panel/touchpad assembly down from the vent hood.
4. Disconnect wiring - At the rear, disconnect any wiring connectors or terminals leading to the control board.
5. Remove and replace touchpad - Take out the old touchpad from the control panel and replace it with the new touchpad.
6. Reconnect wiring - Reconnect all wiring connectors and terminals to the control board.
7. Reinstall control panel - Place the control panel assembly back up into position and replace the mounting screws.
8. Restore power - Restore power to the vent hood.
9. Test operation - Turn on the vent hood and test that the new touchpad and controls operate properly.
10. Reassemble vent hood - Replace any other components or covers that were removed during the repair.

Repair Instructions:

The control board runs the range hood fan, lights, and other features. When parts on the control board break, it can make the whole range hood not work. Some reasons the control board can fail include: Power surges can damage its delicate electronics. The circuits and connections can wear out over many uses. Grease and moisture can get on the board and cause shorts, especially on older models. Pressing the touchpads a lot over time can break integrated controls. Parts like capacitors or relays fail as they get old. If the control board is broken, it may not send the electric signals needed to turn on the fan when you try to use it. The fan needs those signals to start running. So if the control board is bad, the fan won't work even if the actual fan motor is OK. To fix it, the faulty control board usually needs to be replaced.

Repair Instructions:

The main control board runs the range hood fan, lights, and other features. When parts on the control board break, it can make the whole range hood not work. Some reasons the control board can fail include: Power surges can damage its delicate electronics. The circuits and connections can wear out over many uses. Grease and moisture can get on the board and cause shorts, especially on older models. Pressing the touchpads a lot over time can break integrated controls. Parts like capacitors or relays fail as they get old. If the control board is broken, it may not send the electric signals needed to turn on the fan when you try to use it. The fan needs those signals to start running. So if the control board is bad, the fan won't work even if the actual fan motor is OK. To fix it, the faulty control board usually needs to be replaced.

How to Replace Range Vent Hood Main Control Board

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filters and baffles - Remove any filters, baffles or covers obstructing access to the main control board.
3. Detach wiring connectors - Disconnect all wiring harnesses and connectors attached to the main control board terminals.
4. Remove mounting screws - Remove the mounting screws securing the main control board to the vent hood.
5. Remove main control board - Carefully remove the old main control board from the vent hood chassis.
6. Install new main control board - Place the new main control board into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten screws to secure the new main control board.
8. Reconnect wiring - Reattach all wiring connectors to the terminals on the new main control board.
9. Replace filters and baffles - Replace any filters, baffles or covers that were removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new main control board is functioning properly.

Repair Instructions:

The control module is the circuit board inside that runs the range hood fan and blower. If the control module breaks, it can make the fan not turn on. Some reasons it can fail: Power surges or spikes can harm its sensitive electronics. Long use over time can make its circuits and parts wear out or corrode. Grease and moisture getting in can cause electrical shorts. The touchpads connect to the module, so pressing them a lot can damage the controls. Individual parts like transistors or processors can also fail from age and stress. If the module is broken, it may not send the electric signal to start the fan when you try to use it. The fan needs that signal to run. So if the control module is faulty, the fan won't work even if the actual fan still can. Typically the bad control module needs replacement to make the range hood fan and blower work again.

How to Replace Range Vent Hood Control Module

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filters and baffles - Remove any filters, baffles or covers obstructing access to the control module.
3. Detach wiring connectors - Disconnect all wiring harnesses and connectors attached to the control module terminals.
4. Remove mounting screws - Remove the mounting screws securing the control module to the vent hood.
5. Remove control module - Carefully remove the old control module from the vent hood chassis.
6. Install new control module - Place the new control module into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten screws to secure the new control module.
8. Reconnect wiring - Reattach all wiring connectors to the terminals on the new control module.
9. Replace filters and baffles - Replace any filters, baffles or covers that were removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new control module is functioning properly.

Repair Instructions:

The fan switch turns power on and off to the range hood blower fan. When the switch breaks, electricity can't reach the fan motor to make it run. Some reasons the switch can fail: Long use wears out the contacts so they won't connect right when flipped. Grease can get in and make the parts stick. Electrical surges can short out and damage the wiring and electronics inside. Moisture can cause corrosion of the electrical contacts. Physical damage like cracks or broken levers stops the switch from flipping properly. If the switch does not send electricity to the fan, the fan won't turn on since it has no power. The broken switch cuts the connection from the power to the fan motor. To fix it, the faulty switch usually needs to be replaced. A new switch will re-establish the connection so electricity can flow to the fan motor, making the fan run when the hood vent is turned on.

How to Replace Range Vent Hood Fan Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the fan switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the fan switch terminals.
4. Remove mounting screws - Remove the small mounting screws securing the fan switch to the vent hood.
5. Remove old fan switch - Carefully remove the old fan switch from the vent hood.
6. Install new fan switch - Place the new fan switch into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten the small mounting screws to secure the new fan switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new fan switch.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new fan switch is functioning properly.

Repair Instructions:

The push button switch turns the range hood fan on by sending electricity to the fan motor. If the push button breaks, it stops the power from reaching the motor to start the fan blowing. Some reasons the push button can fail: The contacts inside get bent or worn out from lots of pressing, so they can't connect right. Grease or grime can get in the button and make the contacts stick. Moisture getting in can corrode the electrical contacts. Damage from impact can break the plastic button or the switch parts inside. Electrical surges can burn out the switch or wires. When the push button fails, pressing it won't complete the circuit to give power to the fan motor anymore. Without getting power, the blower won't turn on even if the motor is OK. Testing will show no continuity through the push button switch. To fix it, the faulty push button usually needs replacement. A new push button will let electricity flow to the fan motor again so the range hood fan runs when you press the button.

How to Replace Range Vent Hood Push Button Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the push button switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the push button switch terminals.
4. Remove mounting nuts - Remove the small mounting nuts securing the push button switch to the vent hood.
5. Remove old push button - Carefully remove the old push button switch from the vent hood.
6. Install new push button - Place the new push button switch into position, aligning any mounting holes.
7. Replace mounting nuts - Insert and tighten the small mounting nuts to secure the new push button switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new push button.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new push button switch is functioning properly.

Repair Instructions:

Range hoods have separate switches to control the fan and light. If either switch breaks, it will stop the fan or light from turning on. Some reasons the switches can fail: The metal contacts inside wear out from a lot of use over time, so electricity can't pass. Grease and grime buildup make the switch parts stick or bind. Moisture getting inside corrodes the electrical contacts. Power surges from the electrical system can damage the wiring and parts. Physical damage like cracked levers or impact breaks the switch. When a switch can't conduct electricity anymore, the fan or light has no power and won't turn on. Testing will show no flow through the broken switch. The faulty switch needs to be replaced with a working one to get power flowing again to the fan or light.

How to Replace Range Vent Hood Fan or Light Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the switch terminals.
4. Remove mounting screws - Remove the small mounting screws securing the switch to the vent hood.
5. Remove old switch - Carefully remove the old fan or light switch from the vent hood.
6. Install new switch - Place the new fan or light switch into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten the small mounting screws to secure the new switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new switch.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new switch is controlling the fan or light properly.

Repair Instructions:

The switch kit has all the switches that control the power for the range hood fan, light, and other electrical parts. If the switches in the kit break, they can make the range hood not work right. Some reasons the switches can fail: The contact points inside wear out from opening and closing over many years of use. Grime, grease, or moisture can make the switch pieces stick and not connect properly when flipped. Impact or power surges can damage the switch levers or wiring. Corrosion from cooking vapors and moisture can damage the electrical contacts. If the broken switches stop electricity from reaching the fan, lights, or other parts, those range hood parts won't turn on when needed. The faulty switches block the electricity flow required to power the range hood features. To fix it, the switch kit usually needs to be replaced with a new set of properly working switches.

How to Replace Range Vent Hood Switch Kit

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filters or baffles - Remove any filters or baffles obstructing access to the switch kit.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the switch kit terminals.
4. Remove mounting screws - Remove the mounting screws securing the old switch kit to the vent hood.
5. Remove old switch kit - Carefully remove the entire old switch kit assembly from the vent hood.
6. Install new switch kit - Place the new switch kit assembly into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten mounting screws to secure the new switch kit.
8. Reconnect wiring - Reattach all wiring connectors to the terminals on the new switch kit.
9. Replace filters and baffles - Replace any filters or baffles that were removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that all switches are functioning properly.

Repair Instructions:

The rocker switch turns the range hood fan on and off by controlling the power to the fan motor. If the rocker switch is broken, it blocks electricity from reaching the fan motor so the fan can't turn on. Some reasons the rocker switch can fail: The metal contact points inside wear out from flipping the switch over many years. Grease, moisture, or dirt inside stops the switch from moving smoothly or corrodes the contacts. Damage from impact can loosen connections or break switch parts. Power surges or too much electricity can burn out the switch wires and components. When the rocker switch cannot pass electricity to the fan motor anymore, flipping the switch does not make the fan start blowing. No power gets to the fan motor because of the bad switch. To fix it, the faulty rocker switch usually needs to be replaced.

How to Replace Range Vent Hood Rocker Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the rocker switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the rocker switch terminals.
4. Remove mounting nuts - Remove the small mounting nuts securing the rocker switch to the vent hood.
5. Remove old rocker switch - Carefully remove the old rocker switch from the vent hood.
6. Install new rocker switch - Place the new rocker switch into position, aligning any mounting holes.
7. Replace mounting nuts - Insert and tighten the small mounting nuts to secure the new rocker switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new rocker switch.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new rocker switch is functioning properly.

Repair Instructions:

The rotary switch turns the range hood fan and light on and off by rotating to different positions. If the rotary switch breaks, it blocks the electricity from reaching the fan and light so they won't turn on. Some reasons the rotary switch can fail: The metal contacts inside wear out over many years of use, stopping smooth turning and electrical flow. Grease or dirt buildup makes the rotating control sticky and hard to turn. Moisture getting inside corrodes the electrical contacts. Physical impact can damage the switch knob and internal parts. Power surges can burn out the switch wiring. When the rotary switch can no longer pass electricity between contacts, turning it does not send power to the fan or light anymore. The fan and light stay off without getting power. To fix it, the faulty rotary switch needs to be replaced.

How to Replace Range Vent Hood Rotary Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the rotary switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the rotary switch terminals.
4. Remove mounting nuts - Remove the small mounting nuts securing the rotary switch to the vent hood.
5. Remove old rotary switch - Carefully remove the old rotary switch from the vent hood.
6. Install new rotary switch - Place the new rotary switch into position, aligning any mounting holes.
7. Replace mounting nuts - Insert and tighten the small mounting nuts to secure the new rotary switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new rotary switch.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new rotary switch is functioning properly.

Repair Instructions:

The selector switch controls the different speed settings for the range hood fan motor. If the selector switch breaks, it stops the ability to turn on the fan or change its speed. Some reasons the selector switch can fail: The contact points inside wear out over time, preventing smooth changing between settings. Grime or grease buildup makes the switch parts stick so the settings cannot be switched. Moisture getting inside corrodes the electrical contacts. Damage from impact can break the switch knob or internal components. Power surges can burn out the wiring inside the switch. When the selector switch fails to connect properly between contacts, electricity can't reach the fan motor to activate different fan speeds. The fan will stay off without getting power even when the switch is moved. To fix it, the faulty selector switch usually must be replaced.

How to Replace Range Vent Hood Selector Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the selector switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the selector switch terminals.
4. Remove mounting screws - Remove the small mounting screws securing the selector switch to the vent hood.
5. Remove old selector switch - Carefully remove the old selector switch from the vent hood.
6. Install new selector switch - Place the new selector switch into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten the small mounting screws to secure the new selector switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new selector switch.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new selector switch is functioning properly.

Repair Instructions:

The range hood uses switches to control the power for the fan, light, and other electrical parts. If any of the switches break, it will stop the range hood from working right. Common ways switches can fail include: The metal contact points inside wear out from opening and closing over many years of use, preventing good electrical connections. Grease, dirt or moisture can get inside the switch, causing sticking of the moving pieces. Cooking vapors and moisture can corrode the electrical contacts. Physical damage to switch levers, knobs or parts from impact. Power surges burning out the internal switch wiring. When a damaged switch cannot pass electricity properly anymore, power can't reach the fan, light or other parts to turn them on when needed.

How to Replace Range Vent Hood Switch

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.

2. Remove filter or baffle - Remove any filter or baffle obstructing access to the switch.
3. Detach wiring connectors - Disconnect the wiring connectors attached to the switch terminals.
4. Remove mounting screws - Remove the small mounting screws securing the switch to the vent hood.
5. Remove old switch - Carefully remove the old switch from the vent hood.
6. Install new switch - Place the new switch into position, aligning any mounting holes.
7. Replace mounting screws - Insert and tighten the small mounting screws to secure the new switch.
8. Reconnect wiring - Reattach the wiring connectors to the terminals on the new switch.
9. Replace filter or baffle - Replace any filter or baffle that was removed.
10. Restore power - Restore power to the vent hood.
11. Test operation - Turn on the vent hood and test that the new switch is functioning properly.

Repair Instructions:

Make sure the fan blade spins freely. If it doesn't, check if the blade is rubbing against the blower housing. Inspect the fan blade for damage. If the blade is damaged, install a new one.

How to Replace Range Vent Hood Fan Blade

1. Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect the wires leading to the fan motor.

2. Remove filters or baffles - Remove any filters, baffles or panels that are obstructing access to the fan blade.
3. Remove fan blade retaining screws - Locate the screws securing the fan blade to the motor shaft. Remove the screws using a screwdriver.
4. Slide fan blade off motor shaft - With the retaining screws removed, carefully slide the fan blade off the motor shaft.
5. Inspect and clean fan motor shaft - Clean the motor shaft and remove any dirt or debris. Inspect the shaft for damage.
6. Slide new fan blade onto shaft - Carefully slide the new replacement fan blade fully onto the motor shaft.
7. Secure with retaining screws - Insert and tighten the fan blade retaining screws to secure the new blade to the shaft.
8. Replace filters and baffles - Replace any filters, baffles or panels that were removed to access the fan blade.
9. Restore power and test - Restore power to the vent hood. Turn on the fan and ensure the new blade rotates properly.

Repair Instructions:

Inspect the fan blade or blower wheel inside the vent hood to see if anything is blocking it from spinning freely. Objects or buildup of debris can prevent the blade from turning properly. Try to clear any obstructions without damaging the fan blade or wheel if possible. This may allow the vent to work again. However, if the fan blade or blower wheel is bent, cracked, or extremely dirty, it likely needs replacement. A damaged or clogged fan will not move air efficiently for venting. The blade should spin smoothly and cleanly. If the fan blade or wheel is faulty, installing a new one will restore strong airflow for good venting performance.