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Friedrich MR09Y3H Thermistor
A thermistor is a type of resistor whose resistance is dependent on the current temperature. They can tell the HVAC system when a temperature has been reached. The heating system interprets the temperature in several different areas to make a decision on what needs to be done.
Symptoms the system thermister will have to be replaced
- Blower motor may refuse in the attempt to engage full speed
- The heating and AC system may not function due to a broken thermistor
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If you are going to be buying or ordering a new Friedrich MR09Y3H replacement part, do your due diligence and make sure of the correct model and also make a visual comparison so that you are positive that the correct replacement thermistor is the one being purchased. There is no need to install the replacement part alone. Hire someone with experience in your community to hire and install the part for you.
Feel free to download your manual for help.
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