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عربىExample 1 Fault phenomenon: The heater power cord plug is deformed by heat.
Analysis and maintenance: The plug of the electric heater will become hot after being used for a long time, and may even become deformed. This is mainly related to the power socket. The power of heaters is mostly between 1000 and 2000W, which is much greater than the power of ordinary household appliances such as fans (only about 50W). Therefore, a dedicated power socket with a rated current of more than 10A must be used. If the capacity is too low, the conductive copper sheets will The temperature rises and is transmitted to the plastic cover of the power plug, causing it to deform. Therefore, when using a heater, you should use a regular special socket with a rating of 10A or above just like you would use an air conditioner or other major appliances. The heater plug that is severely deformed must be replaced as soon as possible to prevent accidents.
Example 2 Fault phenomenon: The far-infrared electric heater does not work after being powered on.
Analysis and maintenance: First of all, check whether the power plug of the machine is plugged in properly, whether the safety switch is in good contact, whether the leads in the machine are desoldered or fallen off, whether the fuse is overheated and blown, etc. Otherwise, the whole machine will not work, that is, the upper and lower tubes. None come on, and the fan motor doesn't work. The troubleshooting method is:
(l) Check the power plug;
(2) Move the electric heater to a relatively flat ground to prevent uneven ground from causing poor contact with the safety switch;
(3) Turn on the machine and check whether there are any fault points such as weak soldering, desoldering, or lead falling off;
(4) Use a multimeter to check whether the fuse is blown, otherwise replace the fuse;
(5) Disassemble the safety switch and polish the contacts with sandpaper to make good contact.
Example 3 Fault phenomenon: The air guide swing blade of the PTC heater fails.
Analysis and maintenance: The air guide swing blade fails. Although it does not affect the hot air supply function of the heater, its effective expansion of the air supply surface is limited. The main causes of failure are:
(l) The swing blade drive motor is damaged;
(2) The corresponding thyristor on the control circuit is damaged;
(3) The current-limiting resistor corresponding to the thyristor branch is open-circuited or weakly welded. To inspect the blades, the casing needs to be disassembled. Connect the 220V mains power directly to the power supply end of the motor to determine whether it is intact; if the motor is intact, check the silicon-controlled and current-limiting resistors.
Example 4 Fault phenomenon: The remote control heater fails.
Analysis and maintenance: First check whether the battery of the remote control has failed due to long use or has poor contact. If it is normal, just disassemble the remote control and check whether the solder joints of the transmitter tube have fallen off or been soldered due to a fall. **Remove the relevant solder joints. Weld again. If the remote control works normally, it is usually due to a fault in the receiver of the line. Disassemble the receiving head and check whether the two pins of the receiving head are desoldered due to vibration. If the pins are indeed desoldered, the fault can be eliminated after repair welding.
Example 5 Fault phenomenon: Humidification heater leaks.
Analysis and maintenance: Humidification-type heaters mainly include PTC type, far-infrared heating alarm tube, etc. The cause of water leakage is almost always due to vibration, aging, etc., which causes the silicone tube stuck to the heating copper tube to deglue or the water tank to rupture. Commercially available 704 glue can be used to bond it during maintenance, but please note: after sticking to the table, it should be After curing for 24 hours, refill with water. If it cannot be repaired for a while, you can continue to use the heater for heating but do not refill it with water to use the "diffusion function" to avoid electric shock accidents due to water leakage.
Example 6 Fault phenomenon: When the PTC-type heater is used backward for a period of time, the hot air volume becomes significantly smaller, and occasionally a "click" sound is heard.
Analysis and maintenance: The heating principle of this type of heater is to use an axial flow impeller to force the indoor air to circulate through the PTC heating body to increase the room temperature. The PTC material has constant temperature properties, and the stronger the airflow passing through, the more ideal the heat exchange effect will be. However, after a period of use, dust accumulates on the air inlet filter, causing the air inlet volume to decrease, resulting in a significant deterioration in the heating effect. In some models, the airflow weakens, causing the temperature of the PTC heating component to be too high, causing thermostat protection. After a power outage, the PTC temperature gradually drops, and the resistance decreases, causing the thermostat to be powered on, thus continuously turning on and disconnected, affecting the heating effect. During maintenance, the heater can resume normal operation after taking out the filter and cleaning it. Therefore, when using a PTC heater, the filter should be cleaned frequently.
Example 7 Fault phenomenon: The electric heating oil heater is heated upside down, causing the temperature not to rise.
Analysis and maintenance: The heating element of the electric heating oil heater is located at the bottom of the closed shell of the oil heater. Special heat-conducting oil is injected into the shell. When it is inverted or laid flat, the bottom heating element will expose the soil surface. At this time, the electric heating element will be exposed to electricity. Dry burning may cause explosion or burnout, damaging the oil seal, or even causing electric shock. Therefore, the electric heating oil heater is strictly prohibited from being used upside down or laid flat. The resulting non-heating failure can be eliminated by simply replacing the heating element.
Daily maintenance of heater
1. Pay attention to cleaning the dust off the heater
During the use of the heater, it is exposed to the outside, and the surface is easily contaminated with a layer of foreign matter and dust. If it is not cleaned off, it will affect the heat dissipation. Therefore, you must pay attention to cleaning the dust and keep the surface of the heater clean. of cleanliness.
2. Pay attention to maintenance of the heater motor
After the motor has been running for a long time, the motor should be maintained and replaced. This operation process must be judged and maintained by professionals. The motor cannot be disassembled without permission. This can easily cause a short circuit and the motor not to rotate. In the least case, the fuse will burn, and in serious cases, it will cause burning of the wiring harness and fire... The variable speed resistor can make the motor change gears. If the first or second gear is used for a long time, the resistor will easily burn out and affect normal use. If this problem is found, it should be replaced in time.
3. The operating system of the heater must be protected
After long-term use of the operating system of the heater, the control cables are prone to aging and deformation, making the operation inflexible or inconsistent. Do not move it rigidly to avoid damage to the parts. If you find this problem, you should go to the maintenance station for diagnosis and repair and replacement according to the specific situation.
4. The ventilation duct of the heater must be protected
The motor ventilation pipe cannot be removed. If removed, it will easily cause the motor to overheat and burn out. The ventilation ducts are the No. 1 and No. 2 hoses of the heater. Due to long-term use at high temperatures, they are very easy to age and crack. If problems are found, they should be replaced in time to avoid water leakage, excessive water temperature, and deformation of the engine cylinder head...
When using a heater, you must pay attention to daily maintenance. Users must pay attention to the safety of electricity on a daily basis. They also need to pay attention to the maintenance of the heater itself. Doing the relevant maintenance work well will not only make the use smoother, safer, and more secure but also extend the use time of the equipment heater to a certain extent, allowing the heater to better serve you.
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