Aircon Thermister Problem
An air conditioning system is a complex device comprising various interconnecting parts whose functions help maintain an indoor ambiance that is ambient. A thermistor is an important part responsible for temperature regulation and the efficient performance of this gadget. If there happens to be any malfunctioning of the thermistor, different problems may arise affecting your air conditioning system. Therefore in this post, we will delve into some of the common thermistor issues as well as how you can resolve them.
What is a Thermistor?
A thermistor is a sensor that measures temperature and is used by air conditioning units to monitor and regulate the temperature. It detects temperature change and sends the signal information to the air conditioner’s control board for further adjustments. NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient) are common types of thermistors found in most air conditioning systems.
Common Thermistor Issues
Incorrect Temperature Readings
Symptom: Your air conditioner may be blowing hot or cold air inconsistently due to a faulty thermistor which provides incorrect temperature readings.
Cause: A thermistor may fail after continuous use, exposing it to extreme temperatures or electrical problems.
Solution: Test it with a multimeter to confirm that the thermistor has the right resistance for its associated temperature. If not within range, a replacement of the sensor is normally needed.
Refer: Aircon Servicing
Air Conditioner Won’t Start
Symptom: Either the machine does not start or it runs for some time and then stops.
Cause: An ineffective thermistor can give wrong signals to the control board preventing it from starting up.
Temperature control-thermister will have been checked for correct connections and wirings; all wiring should be intact and tight. In case there is a problem with wires, the thermistor’s resistance has to be tested as well. If not within the normal range, one should replace it.
Frequent On and Off Cycling
Symptom: A pump will get engaged or disengaged frequently in such a way that the desired cooling levels cannot be achieved.
Cause: Sometimes due to some problems with thermistors they keep producing erroneous temperature values which leads to frequent cycling since they cannot find a middle point temperature setting point where start/stop keeps fluctuating all the time.
Solution: Ensure that there are no signs of impairment on the said main device or wear on it too.” By checking its resistance against those indicated by manufacturers possible functional defects may be detected.”
Display Error Codes
Symptom: Error codes associated with temperature sensors or thermistors can show up on newfangled air conditioners with digital displays.
Cause: An error code means that there is a fault in the thermistor or its circuit path detected by the unit.
Solution: To understand what an error code means, you can refer to your air conditioner’s manual. It mostly recommends that one should check/replace the thermistor. Additionally, one must follow the correct troubleshooting procedures and replacement processes set forth by the manufacturer.
Resolving Thermistor Issues
Power off your device
Always remember how important it is to check whether your air conditioner has been turned off and unplugged before doing maintenance or repair work so that there won’t be any accidents with electricity in your surroundings.
Identify thermistor position
Typically, the coil evaporating or air handling unit contains the thermistor. Check the unit’s manual for specific location details.
Carry out an examination and test procedure
The thermistor and its wiring should be inspected visually for signs of damage tied up to a certain site. Use a multimeter and test at different temperatures if possible, then compare them with what the manufacturer specified.
Changing a thermistor
If you have found one defective, buy another that is of similar specs as yours did upon leaving the factory premises. Take off old parts and place new ones ensuring all wires are tightly connected to them.
Assemble all again and examine
Next, all panels will be restored; then bring back power to see if proper air conditioning functions have been restored alongside fixing issues related to temperature regulation problems experienced earlier during operation periods of such equipment.
Conclusion
A dysfunctional thermistor could dramatically influence your air conditioner’s efficacy resulting in uneven cooling, continuous cycling, or system breakdowns phrases. This guide enables one to diagnose and fix common issues that come as a result of poorly functioning thermistors. If one is unsure about doing the repairs by themselves, it is always advisable to ask an expert technician’s opinion to make sure that your unit runs well and is dependable.