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Symptoms of Failure of Refrigerator Temperature Controller - How to Measure the Switch of Refrigerator Temperature Controller

Article Source:Thermal protectorAuthor:YaxunPopularity:Published time:2019-06-29 16:53

Keywords: electronic thermostat thermostat When the temperature inside your refrigerator is too high or too low, then you should check if the thermostat is abnormal. The thermostat can be used to adjust the temperature inside the refrigerator. In different seasons, the internal temperature of the refrigerator needs to be adjusted. The thermostat of the refrigerator plays a role in regulating the internal temperature of the refrigerator. Then there are those symptoms when the refrigerator thermostat is broken! 1. If the thermostat switch is damaged in the closed state, the refrigerator will not run. 1, inspection method: If the refrigeration is good without stopping, you can conclude that the thermostat is damaged. 2, the solution: you can purchase the same type of thermostat replacement, you can also purchase the refrigerator timer control start / stop, the use is also very convenient.

II. If the thermostat switch is damaged in an open state, the refrigerator does not start and does not turn on.
1. This kind of fault checking method is: open the refrigerator cold stall (quick freezing file), if it can start, it can conclude that the thermostat is damaged.
2, the solution: conditional purchase of the same type of thermostat replacement, you can also purchase the refrigerator timer, turn the forced bell open, use the timer to control the start / stop.

Refrigerator Temperature Controller

How to measure the refrigerator thermostat switch is good or bad

The refrigerator is a household electrical appliance, in which the thermostat is used to control the temperature of the refrigerator. Due to frequent adjustments, it is easy to cause insensitivity or damage. At this time, how do we measure its quality? We will detail its measurement methods.

Tools/raw materials

Multimeter, temperature control switch.

Method / step
First, adjust the multimeter to the resistance 200 gear position, the black test pen to the com jack, the red test pen to the V / Ω jack, and finally turn on the multimeter voltage switch. Note that the HOLD button does not press.
Multimeter measures the thermostat used in the refrigerator

The thermostat used in the refrigerator has three or four terminals, one or two of which are grounded and have a grounding symbol. The remaining two are the control terminals and their resistance should be close to 0 ohms.

The normal control contact of the thermostat does not mean that the thermostat is normal. It is also necessary to measure the leakage of its contacts. At this time, the multimeter needs to be adjusted to the 20MΩ gear position, and the contact resistance to ground is measured.
 
Use one of the multimeter's pens to touch the ground terminal of the thermostat, and the other pen to contact one of the control terminals of the thermostat. If the measurement result shows “1.”, the thermostat has good insulation and can be used normally.
 
Then use the same method to measure the resistance between the other control terminal and the ground terminal of the temperature controller, and display "1." as normal. If the measured resistance is relatively small, it indicates that the thermostat is leaking, which will cause the refrigerator to trip.
 
6 The last thing to measure is whether the resistance between the two ground terminals is close to 0. If the resistance is 0, both terminals can be used.
Also need to pay attention to:
When measuring the control contact with the multimeter pen, observe that the resistance value is close to 0 when adjusting the knob. If there is a breakpoint, the thermostat is not working properly.

Adjust the multimeter to 20MΩ and measure the resistance of the contact to ground