Range vent hood lights not working: Common Causes & How to Fix
1Range Vent Hood Light Bulb
Most Common Solution
Repair Instructions:
Before you consider replacing any other parts related to the light bulb, give changing the bulb itself a try first.
How to Replace Range Vent Hood Light Bulb
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Turn off power and allow bulb to cool - Locate the circuit breaker for the vent hood and turn it off. Allow the light bulb to cool completely before handling.
- Remove light cover or globe - Remove any retaining screws, lens cover, or globe obstructing access to the light bulb.
- Unscrew old bulb - Gently turn the old bulb counter-clockwise to unscrew it from the light socket.
- Inspect socket - Inspect the socket for any signs of damage before inserting the new bulb.
- Insert and screw in new bulb - Align the pins of the new replacement bulb with the light socket holes. Gently turn clockwise to secure.
- Replace light cover or globe - Replace any light cover, lens, or globe that was removed.
- Restore power and test - Restore power to the vent hood and switch on the light to ensure the new bulb illuminates properly.
- Discard old bulb - Discard the old burned out bulb appropriately. Do not simply throw it in the trash.
2Range Vent Hood Light Socket
Most Common Solution
Repair Instructions:
If you want to see if the light socket is the problem, use a multimeter to check the power going into the socket. If there's power in the socket but the bulb still won't light up, it's time to change the light socket.
How to Replace Range Vent Hood Light Socket
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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 light socket.
- Remove light bulb - Unscrew and remove the light bulb from the faulty socket.
- Detach wiring - Disconnect the wiring connectors attached to the light socket terminals.
- Remove mounting screws - Remove any mounting screws securing the light socket in place.
- Remove old light socket - Carefully maneuver the old light socket out of the vent hood housing.
- Install new light socket - Align and insert the new replacement light socket into the vent hood.
- Replace mounting screws - Reinsert and tighten any mounting screws to secure the new socket.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new light socket.
- Insert light bulb - Screw in the light bulb securely into the new socket.
- Restore power and test - Restore power and switch on light to verify the new socket works properly.
3Range Vent Hood Light Assembly
Most Common Solution
Repair Instructions:
If your vent hood light stops working, you'll need to change it. But keep in mind that some makers don't sell the bulb separately. Instead, they require you to buy the entire light unit.
How to Replace Range Vent Hood Light Assembly
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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 light assembly.
- Remove light cover or globe - Remove any retaining screws, lens cover, or globe obstructing access to the light assembly.
- Detach wiring connectors - Disconnect any wiring connectors attached to the light assembly.
- Remove mounting screws - Remove the mounting screws securing the light assembly to the vent hood.
- Remove old light assembly - Carefully remove the entire light assembly from the vent hood.
- Install new light assembly - Place the new replacement light assembly into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten mounting screws to secure the new light assembly.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new light assembly.
- Replace light cover or globe - Replace any light cover, lens, or globe that was removed.
- Restore power and test - Restore power and switch on the light to ensure the new assembly is functioning properly.
4Range Vent Hood Halogen Lamp
Most Common Solution
Repair Instructions:
A few of the halogen lamp bulbs might have stopped working. It's tough to tell just by looking if a halogen bulb is burned out. So, you can use a tool called a multimeter to check them. This tool measures electrical continuity, which can tell us if the bulb is still good. But if you want a simpler solution, you can just try swapping out the bulbs.
How to Replace Range Vent Hood Halogen Lamp
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Turn off power and allow lamp to cool - Locate the circuit breaker for the vent hood and turn it off. Allow the halogen lamp to cool completely.
- Remove light cover - Remove any retaining screws or cover obstructing access to the halogen lamp.
- Detach wiring connector - Disconnect the wiring connector attached to the halogen lamp.
- Remove retaining clip - Carefully remove the metal clip securing the halogen lamp in place.
- Slide out old halogen lamp - Gently slide the old halogen lamp straight out of the ceramic socket.
- Insert new halogen lamp - Being careful not to touch the glass, slide the new halogen lamp straight into the ceramic socket.
- Replace retaining clip - Insert the metal retaining clip to secure the new halogen lamp in place.
- Reconnect wiring - Reattach the wiring connector to the terminals on the base of the new lamp.
- Replace light cover - Replace any light cover that was removed.
- Restore power and test - Restore power and switch on light to verify new halogen lamp works properly.
5Range Vent Hood Light Switch
Most Common Solution
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 Light Switch
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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 light switch.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the light switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the light switch terminals.
- Remove mounting screws - Remove the mounting screws securing the old light switch in place.
- Remove old light switch - Carefully maneuver the old light switch out of the vent hood housing.
- Install new light switch - Align and insert the new replacement light switch into position.
- Replace mounting screws - Reinsert and tighten the mounting screws to secure the new light switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new light switch.
- Replace filter or baffle - Replace any filter or baffle that was removed from the vent hood.
- Restore power and test - Restore power and test that the new light switch operates properly.
6Range Vent Hood Push Button Switch
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the push button switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the push button switch terminals.
- Remove mounting nuts - Remove the small mounting nuts securing the push button switch to the vent hood.
- Remove old push button - Carefully remove the old push button switch from the vent hood.
- Install new push button - Place the new push button switch into position, aligning any mounting holes.
- Replace mounting nuts - Insert and tighten the small mounting nuts to secure the new push button switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new push button.
- Replace filter or baffle - Replace any filter or baffle that was removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new push button switch is functioning properly.
7Range Vent Hood Fan or Light Switch
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the switch terminals.
- Remove mounting screws - Remove the small mounting screws securing the switch to the vent hood.
- Remove old switch - Carefully remove the old fan or light switch from the vent hood.
- Install new switch - Place the new fan or light switch into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten the small mounting screws to secure the new switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new switch.
- Replace filter or baffle - Replace any filter or baffle that was removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new switch is controlling the fan or light properly.
8Range Vent Hood Switch Kit
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filters or baffles - Remove any filters or baffles obstructing access to the switch kit.
- Detach wiring connectors - Disconnect the wiring connectors attached to the switch kit terminals.
- Remove mounting screws - Remove the mounting screws securing the old switch kit to the vent hood.
- Remove old switch kit - Carefully remove the entire old switch kit assembly from the vent hood.
- Install new switch kit - Place the new switch kit assembly into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten mounting screws to secure the new switch kit.
- Reconnect wiring - Reattach all wiring connectors to the terminals on the new switch kit.
- Replace filters and baffles - Replace any filters or baffles that were removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that all switches are functioning properly.
9Range Vent Hood Rocker Switch
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the rocker switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the rocker switch terminals.
- Remove mounting nuts - Remove the small mounting nuts securing the rocker switch to the vent hood.
- Remove old rocker switch - Carefully remove the old rocker switch from the vent hood.
- Install new rocker switch - Place the new rocker switch into position, aligning any mounting holes.
- Replace mounting nuts - Insert and tighten the small mounting nuts to secure the new rocker switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new rocker switch.
- Replace filter or baffle - Replace any filter or baffle that was removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new rocker switch is functioning properly.
10Range Vent Hood Rotary Switch
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the rotary switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the rotary switch terminals.
- Remove mounting nuts - Remove the small mounting nuts securing the rotary switch to the vent hood.
- Remove old rotary switch - Carefully remove the old rotary switch from the vent hood.
- Install new rotary switch - Place the new rotary switch into position, aligning any mounting holes.
- Replace mounting nuts - Insert and tighten the small mounting nuts to secure the new rotary switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new rotary switch.
- Replace filter or baffle - Replace any filter or baffle that was removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new rotary switch is functioning properly.
11Range Vent Hood Main Control Board
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filters and baffles - Remove any filters, baffles or covers obstructing access to the main control board.
- Detach wiring connectors - Disconnect all wiring harnesses and connectors attached to the main control board terminals.
- Remove mounting screws - Remove the mounting screws securing the main control board to the vent hood.
- Remove main control board - Carefully remove the old main control board from the vent hood chassis.
- Install new main control board - Place the new main control board into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten screws to secure the new main control board.
- Reconnect wiring - Reattach all wiring connectors to the terminals on the new main control board.
- Replace filters and baffles - Replace any filters, baffles or covers that were removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new main control board is functioning properly.
12Range Vent Hood Selector Switch
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the selector switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the selector switch terminals.
- Remove mounting screws - Remove the small mounting screws securing the selector switch to the vent hood.
- Remove old selector switch - Carefully remove the old selector switch from the vent hood.
- Install new selector switch - Place the new selector switch into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten the small mounting screws to secure the new selector switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new selector switch.
- Replace filter or baffle - Replace any filter or baffle that was removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new selector switch is functioning properly.
13Range Vent Hood Switch
Most Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filter or baffle - Remove any filter or baffle obstructing access to the switch.
- Detach wiring connectors - Disconnect the wiring connectors attached to the switch terminals.
- Remove mounting screws - Remove the small mounting screws securing the switch to the vent hood.
- Remove old switch - Carefully remove the old switch from the vent hood.
- Install new switch - Place the new switch into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten the small mounting screws to secure the new switch.
- Reconnect wiring - Reattach the wiring connectors to the terminals on the new switch.
- Replace filter or baffle - Replace any filter or baffle that was removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new switch is functioning properly.
14Range Vent Hood Touchpad
Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove mounting screws - Remove the small screws that secure the touchpad to the vent hood.
- Detach touchpad - Gently pry off the old touchpad from the vent hood. Take care not to bend or damage it.
- Disconnect wiring - At the rear, disconnect any wiring connectors attached to the touchpad.
- Attach wiring to new touchpad - Connect the wiring to the terminals on the back of the new replacement touchpad.
- Position new touchpad - Place the new touchpad into position on the vent hood, aligning any screw holes.
- Secure with mounting screws - Insert and tighten the small mounting screws to secure the new touchpad.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new touchpad powers on and activates fan speeds properly.
- Reassemble vent hood - Replace any other components or covers that were removed during the repair.
15Range Vent Hood Transformer
Common Solution
Repair Instructions:
The transformer takes the high voltage electricity from your home and converts it to a lower voltage that the range hood lights need. If the transformer is faulty, the lights won't get adequate power to light up. Reasons transformers fail: Overheating from electrical overloads can burn out the wire insulation inside. Short circuits in the low voltage wires can damage the transformer windings. Corroded or loose connections cause extra resistance and heat. Physical jarring or vibrations can fracture solder joints or windings. When the transformer can no longer properly decrease the voltage, the reduced power output won't be enough to illuminate the range hood bulbs or LEDs fully. The lights may be very dim or not come on at all. Testing will show the transformer has low output voltage. Replacing the bad transformer restores correct lower voltage power so the lights shine brightly when turned on.
How to Replace Range Vent Hood Transformer
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect all wiring to the transformer.
- Remove access panel - Remove any access panels on the vent hood housing to access the transformer.
- Detach wiring - Disconnect all the wiring connectors attached to the transformer terminals.
- Remove mounting screws - Remove the mounting screws securing the transformer to the vent hood.
- Remove old transformer - Carefully maneuver the old transformer out of the vent hood housing.
- Install new transformer - Align and insert the new replacement transformer into position in the housing.
- Replace mounting screws - Reinsert and tighten the mounting screws to secure the new transformer.
- Reconnect wiring - Reattach all the wiring connectors to the correct terminals on the new transformer.
- Replace access panel - Replace any access panels that were removed from the vent hood.
- Restore power and test - Restore power and verify the transformer is operating properly.
16Range Vent Hood Touchpad and Control Panel
Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove mounting screws - Remove the screws that secure the control panel/touchpad assembly to the underside of the vent hood.
- Detach control panel - Carefully lower the control panel/touchpad assembly down from the vent hood.
- Disconnect wiring - At the rear, disconnect any wiring connectors or terminals leading to the control board.
- Remove and replace touchpad - Take out the old touchpad from the control panel and replace it with the new touchpad.
- Reconnect wiring - Reconnect all wiring connectors and terminals to the control board.
- Reinstall control panel - Place the control panel assembly back up into position and replace the mounting screws.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new touchpad and controls operate properly.
- Reassemble vent hood - Replace any other components or covers that were removed during the repair.
17Range Vent Hood Control Board
Common Solution
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.
How to Replace Range Vent Hood Touchpad and Control Panel
-
Turn off power and disconnect electrical "How to Replace Range Vent Hood Control Board**
-
Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filters and baffles - Remove any filters or baffles obstructing access to the control board.
- Detach wiring connectors - Disconnect all wiring harnesses and connectors attached to the control board terminals.
- Remove mounting screws - Remove the screws securing the control board to the vent hood.
- Remove control board - Carefully remove the old control board from the vent hood.
- Install new control board - Place the new control board into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten screws to secure the new control board.
- Reconnect wiring - Reattach all wiring connectors to the terminals on the new control board.
- Replace filters and baffles - Replace any filters or baffles that were removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new control board is functioning properly.supply** - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove mounting screws - Remove the screws that secure the control panel/touchpad assembly to the underside of the vent hood.
- Detach control panel - Carefully lower the control panel/touchpad assembly down from the vent hood.
- Disconnect wiring - At the rear, disconnect any wiring connectors or terminals leading to the control board.
- Remove and replace touchpad - Take out the old touchpad from the control panel and replace it with the new touchpad.
- Reconnect wiring - Reconnect all wiring connectors and terminals to the control board.
- Reinstall control panel - Place the control panel assembly back up into position and replace the mounting screws.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new touchpad and controls operate properly.
- Reassemble vent hood - Replace any other components or covers that were removed during the repair.
18Range Vent Hood Control Module
Common Solution
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
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Turn off power and disconnect electrical supply - Locate the circuit breaker for the vent hood and turn it off. Disconnect any wiring connectors.
- Remove filters and baffles - Remove any filters, baffles or covers obstructing access to the control module.
- Detach wiring connectors - Disconnect all wiring harnesses and connectors attached to the control module terminals.
- Remove mounting screws - Remove the mounting screws securing the control module to the vent hood.
- Remove control module - Carefully remove the old control module from the vent hood chassis.
- Install new control module - Place the new control module into position, aligning any mounting holes.
- Replace mounting screws - Insert and tighten screws to secure the new control module.
- Reconnect wiring - Reattach all wiring connectors to the terminals on the new control module.
- Replace filters and baffles - Replace any filters, baffles or covers that were removed.
- Restore power - Restore power to the vent hood.
- Test operation - Turn on the vent hood and test that the new control module is functioning properly.