Electric oil heater is a heating tool that we can use every day in winter, but there will be some problems with long-term use, so knowing some maintenance methods can solve many problems for us. What’s the matter with the electric heater at home not hot? The electric heating oil heater circuit is relatively simple. Generally, only the control part and the heating part will fail. If the box body bursts or perforates, there is basically no need for maintenance. Next, come with me to find out how to repair the oil heater.
Brief introduction of electric oil heater
Electric oil heater, referred to as electric heater, is an oil-filled heater, which is a popular safe and reliable space in recent years. heater.
The components of the oil heater electric heater
It is mainly composed of sealed electric heating element, metal heating tube, iron heat sink, temperature control element, power switch, indicator light and so on.
The principle of oil heater electric heater
This kind of heater is to install the electric heating tube inside the cavity of the heat sink, and the heat conduction oil is filled around the electric heating tube in the cavity. When the power is turned on, the heat transfer oil around the electric heating pipe is heated, rises to the upper part of the cavity, circulates convection along the heat pipe or heat sink, and radiates the heat through the surface of the cavity wall, thereby heating the space environment. The heat transfer oil cooled by the air descends around the electric heating tube and is heated again, starting a new cycle. This kind of heater is generally equipped with bimetal temperature control element. When the oil temperature reaches the set temperature, the temperature control element will automatically disconnect the power supply.
Maintenance method of oil heater heater
Failure of control part
The control part of oil heater is composed of heating gear power switch, temperature regulator, fuse , indicator lights, some oil heaters are also equipped with timers. When the temperature regulator is stuck and the contacts are melted in the control part, so that the oil heater cannot be heated or the heating temperature cannot be controlled, the temperature regulator with the corresponding current level and the same installation screw position can be replaced.
When the oil heater has the failure of the heating gear switch not working, I suggest that you should replace the double boat type switch with indicator light at the corresponding current level. Few fuses are blown, mostly caused by a short circuit after the electric heating tube burns through. This situation mostly occurs on old electric heating oil heaters that have a long service life.
Failure of the heating part
The heating part of the electric oil heater is composed of a sealed heating tube, a fuel tank cavity, a heat transfer oil, and an iron heat sink. The common fault of the electric heating oil heater is that the electric heating tube is damaged. You only need to replace the electric heating tube. Note that the heat transfer oil must be added when the electric heating tube is replaced. In this case, personal maintenance is more difficult. Another serious fault is the burst or perforation of the oil heater box, which is difficult for personal maintenance and basically scrapped.
What’s wrong with the electric oil heater not getting hot
①Check whether the power plug, socket, etc. are in poor contact and whether the power cord is open. If only replace a good, qualified power cord, plug or socket, etc.
②If the over-temperature fuse is blown, first check whether there is a short circuit in the rear load. If there is a short circuit, remove the short-circuit source first, and then replace the over-temperature fuse.
③If the thermostat or switch is damaged, use a multimeter to measure and judge, and then repair and replace the damaged components.
④The two electric heating tubes are damaged at the same time and can be replaced as a whole.
⑤The oil heater is low or out of oil. If your electric heater is half hot at the bottom and half not at the top, it means that there may be a shortage of oil. You can change the oil yourself.
⑥Check whether the anti-dump switch is faulty. If the dump switch is damaged, replace it with a new one.
Maintenance steps for the oil heater anti-dump switch
①The anti-dump switch is installed on the cover of the main panel of the oil heater. The hammer is vertically downward, and its contacts are in the connected state at this time, which can supply power to the electric heating tube.
②Before measuring the anti-dump switch, you need to unplug the wiring of any terminal first, so as to measure accurately.
③Adjust the multimeter to the gear of 200 ohms to measure the resistance to measure the resistance between the two terminals of the anti-dump switch.
④There are two situations to measure the anti-dump switch:
One is to measure in the dumped state, when the weight is not perpendicular to the ground, the When the two test leads touch the two terminals of the anti-dump switch, the multimeter displays “1.0”, indicating that it is not connected.
Another case is to measure the resistance between the two terminals with the weight on the vertical ground, at this time, the contacts of the dump switch should be on.
⑤If the multimeter displays 0 or close to 0 in the resistance gear, it means that the resistance is zero. When the oil heater is placed normally, the value is correct, otherwise it means that it is dumped. If the switch is damaged, replace it with a new dump switch.
Attention to the use of oil heaters
Use a qualified three-hole socket
Household electric heaters should use a three-hole socket with a ground wire, Never use a two-hole socket without a ground wire by yourself to prevent danger. And the connected socket should not stand directly above the electric heater, it is best to use a wire board with an overcurrent protection device.
The oil heater should be placed upright
The oil heater must be placed upright, not upside down or inclined. Because the oil heater heater releases heat by heating the heat transfer oil around the heating pipe through the lower heating pipe. If it is placed upside down or diagonally, it will cause empty burning and burn out the heating tube, thereby causing a fire. When using the oil heater in the children’s room, in order to prevent the children from being scalded while playing, I suggest that you preferably have barrier measures.
The electric heating tube should be protected from splashing water and bursting
Do not splash water on the electric heating tube when using the quartz tube and halogen tube electric heater, so as to avoid the electric heating tube bursting. Its front should be kept away from flammable, explosive, deformable and discolored objects, and other objects should also be kept away from a distance of more than 1 meter.
Use in time-sharing with household appliances with high power consumption
The power of electric heaters used at home should preferably be below 2000W, because the capacity of household electric meters is generally 3~10A, and if the power is too large, it is easy to break. electricity and other accidents. The electric heaters of many manufacturers are set to high, medium and low power. When using high power, try not to use it with other high-power appliances (such as rice cookers, electric water heaters, etc.) at the same time to ensure safe use.
Do not cover items on the heater
Do not cover items on the heater, otherwise it is easy to cause the heat of the heater to fail to dissipate in time, causing burn-in short circuit, or due to high temperature. Ignite the covered items and cause a fire. When drying clothes with a special drying rack, wring out the water to avoid danger from water dripping in the control box of the electric heater.
Do not disassemble it by yourself if it fails.
If there is oil leakage or abnormal sound when using the electric heater, you must stop using it immediately and ask a professional to repair it without authorization. disassemble for safety.
Pay attention to maintenance when cleaning and collecting
When cleaning the electric heater, it is best to wipe it with a soft cloth dipped in household detergent or soapy water. damage, causing an accident. The electric heater in the bathroom should be dried and stored, and should not be stored in the bathroom.
