The range hood not having power has a negative impact on the user experience, so you want to understand the causes and how to fix it at home? Please refer to the 5 reasons leading to this situation and detailed instructions for each step to fix it quickly and effectively in the article below.
5 reasons why the range hood does not turn on & quick troubleshooting tips
1. Weak/overloaded input power source
Reason
For some reasons such as increasing number of households in the power grid; the family's power system has been used for a long time, is old, not capable of supplying electricity to modern devices or the power grid has problems causing the input power source to be too weak or overloaded, causing the range hood to not receive electricity.
How to fix
When you detect this condition, you can quickly recognize and fix it according to the following instructions:
Step 1: Check the power source: There are many ways to check such as:
Do not use specialized equipment: When the current is overloaded, you may get a slight electric shock, feel a slight tingling sensation when touching devices, sockets or electrical switches, especially metal-cased devices, or you may observe that the light bulb is dimmer or flickering.
Use specialized equipment: Use a voltage meter to measure the voltage at the socket to check if the voltage is sufficient (usually 220V in Vietnam). If the result is from 220V - 240V, it means the current is normal. If the measurement result is 180V or lower, it means the current is too weak. You can also put an electric tester in the socket to determine if the socket has power or not. If the light is on, it means there is power. If the light is not on or flickering, it means the power is weak and has been cut off.
You use a voltage meter to check the power status of the range hood input.
Step 2: Reduce power load: There are 2 cases:
If the electricity is overloaded because you use the hood during peak hours such as 11-12 noon or 17-19 pm, you should turn off unnecessary devices to reduce the load on the electrical system or use the hood at other times to ensure safety and durability.
If the power is overloaded because you plug many devices into the same outlet, move the hood's power cord to a separate outlet so that the device is supplied with a stronger power source.
Step 3: Install a voltage stabilizer: If your family's power source is weak due to weak electricity from the general grid, you should call a professional to check and install a voltage stabilizer to ensure the hood works well and has long-term durability.
2. Circuit breaker broken
Reason
Many families install a separate circuit breaker for the range hood to ensure electrical safety when using it. However, if the circuit breaker is damaged due to a long-term electrical overload or a technical problem inside such as a broken blade, the range hood may not receive electricity.
How to fix:
When you detect this condition, you can quickly recognize and fix it according to the following instructions:
Step 1: Check the circuit breaker
You turn the circuit breaker on and off to see if it works normally or use an electric tester placed at the output of the circuit breaker to see if there is current running through it. If there is no signal of current running through the circuit breaker, it means it is broken.
You turn on/off the circuit breaker to check its operating status.
Step 2: Replace the new circuit breaker with voltage suitable for the range hood.
Normally, you should choose a circuit breaker with a voltage at least 20% higher than the voltage of the device to ensure safety when using. The voltage of the hood is calculated by the formula I=P/U. In which:
I is current (voltage) = P (capacity of the hood) / P (in Vietnam it is 220V).
In particular, the capacity of the hood is usually stated on the label on the product or detailed information on the company's website. You should check the capacity parameters and calculate the voltage to choose and install the appropriate circuit breaker for the hood.
Circuit breaker voltage information printed on the device surface
3. Broken wire
Reason
When you find that the hood is not powered, you should check the power cord. Normally, a broken power cord can be due to wear and tear after long-term use, attack by small animals (rats, cockroaches, etc.) or due to a strong impact.
How to fix
Details on how to check and handle this situation are as follows:
Step 1: Check the wiring
There are 2 ways to check:
Visual inspection: Look over the entire cord for signs of wear or breakage.
Using an electric tester: You probe the electric tester at the location where you suspect there is a sign of a broken wire. If the electric tester lights up, that is where the wire is broken.
Step 2: Connect or replace
Depending on the breakage, you can reconnect or replace it. If you do not have experience connecting or replacing electrical wires, you should seek the help of a professional repairman to ensure safety.
Perform connection/replacement of broken wire
4. The hood switch is broken.
Reason
In case the hood has been used for a long time without being maintained, impact or water getting inside the hood switch can also be the reason why the device does not receive power.
How to fix
Detailed instructions on how to check and handle this situation are as follows:
Step 1: Disconnect the power and remove the hood cover
You turn off the power to the hood by unplugging the power cord or turning off the circuit breaker. Then, you remove the hood cover to access the internal part of the power switch.
You remove the hood cover to observe the internal components.
Step 2: Check the switch
Turn the power back on and try turning the switch on/off to see if it works properly. Then, place the tip of the electric tester pen in contact with the power switch. If the electric tester pen does not light up, the range hood switch is broken and needs to be replaced.
Step 3: Replace the new switch
You can replace the switch yourself with a new one of the same type or seek the help of a professional repairman. After replacing the switch, you need to make sure that the wires connected to the switch are not loose or unstable.
5. The control board is damaged.
Reason
The control board is the part that concentrates the function buttons of the range hood, usually arranged on the front of the device, is a touch button or push button type. Using it for too long without maintenance, electric shock due to overload... can cause the control board in the range hood to be damaged, causing the device to not receive power.
The control panel of the SUNHOUSE MAMA MMB6682-70 range hood is located in front of the device.
How to fix
How to check and handle this situation as follows:
Step 1: Disconnect the power and remove the device cover
You cut off the power supply to the hood, then remove the cover to observe and check the status of the control board.
Step 2: Check the circuit board
You check the status of the control board by looking for signs such as fire, broken circuit, damaged components or using an electrical tester to check the connection points on the circuit board for electricity.
Step 3: Replace the new control board
If the circuit board is burned, broken components, no power (electric tester does not light up), you need to replace it. You should seek the help of a professional repairman to replace it, install it properly and ensure safety.
Check and replace the hood control board
Above are 5 common reasons why the range hood does not turn on and detailed instructions on how to handle each cause. SUNHOUSE hopes that this article can help you quickly identify the cause and quickly fix the situation, limiting the interruption of your family's cooking experience.
Source: https://sunhouse.com.vn/tu-van-mua-may-hut-mui/may-hut-mui-khong-vao-dien.html
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