1, when it is found that the oil heater cannot operate normally, first of all, we must first put the oil heater upside down, in order to avoid friction damage, we must remember to use a sponge or cushion at the bottom.
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2. Then, unscrew the screws in the oil heater and open the outer cover of the oil heater.
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3, after opening the cover, check the internal structure of the heater, and find the operation card slot.
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4. To find the card slot, you only need to align the inner liner inside the electric heater with the small round hole and then push forward, and the card slot will be exposed outside and fixed.
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Here is a warm reminder: if you do not have a certain understanding of the structure of the machine and equipment, it is best not to disassemble at will. It is recommended to find maintenance staff to repair the door.