![]() ![]() Pests make a home inside the outdoor cabinet and short circuit the wiring Loose wiring caused by vibrations over time, resulting in a short in the circuit boardĪging over time causes the control board to degradeĬlogged air filters result in an overheating blower motor The circuit or control board may fail earlier for several reasons: LED warning lights on the control board flashing an error codeĪn AC circuit board lasts 15 years or more, typically as long as the HVAC system itself. Interruptions in the regular event sequence, like the ignition not turning on or the blower running after everything else has stopped Unstable room temperature, especially when the thermostat is working What are signs the control board needs replacing?Ĭommon warning signs the control board needs replacing include: The control board receives input from the thermostats and temperature sensors then uses the data to cycle the compressor on and off to maintain the set temperature. ![]() The control board – also called the circuit board or motherboard – is the brain of an AC unit. AC circuit board FAQs What is the control board for an AC unit? Replacing the part is usually more cost-effective. Repairing the circuit board requires several hours of labor by a skilled technician in a workshop cleanroom. AC motherboard repair costĪC motherboard repair costs $200 to $850. A ductless mini-split AC system typically has multiple indoor circuit boards, resulting in higher replacement costs. Mini-split AC circuit board prices are $150 to $1,100 installed or $50 to $800 for the parts alone. Hiring a handyman costs $50 to $80 per hour with minimum charges of $75 to $200. Locate the part number on the old circuit board or use the name and model number of the window unit to order the correct part. ![]() Window AC parts are available from AC part suppliers and are typically installed DIY or by a handyman. Window AC circuit boards prices are $50 to $300, depending on the brand and model. professional install – DIY circuit board replacement saves $100 to $300 on labor but may void a central AC's warranty. Warranty – An AC manufacturer's warranty typically covers replacement parts but not labor.ĪC repair services charge $75 to $150 per hour, plus parts.ĭIY vs. refurbished parts – A second-hand or refurbished circuit board costs less but won't include a parts warranty. generic – Brand name parts cost more than generic replacement parts. The following factors affect the replacement cost:īrand name vs. Search Other control board costs for an AC unit ![]()
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