
Air conditioner circuit board parts, including time delay relays, ignition and economizer boards, and replacement kits, ensure precise control, safe operation, and efficient HVAC performance.

-13%Daikin-McQuay 803005073 24Vdc Aux Relay/Circuit BoardSpecial Price $71.47 Regular Price $82.19Out of stock
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-10%Daikin-McQuay 4010444 Printed Circuit BoardSpecial Price $985.83 Regular Price $1,094.27Out of stock
Circuit Boards Replacements for Air Conditioner
Air conditioner circuit boards are designed to monitor and control the electrical functions of HVAC systems. They play a key role in ensuring efficient and safe operation by managing signals to compressors, fans, and sensors. These circuit boards help prevent system malfunctions and support consistent cooling and airflow.
These HVAC circuit boards come in various types to suit specific system requirements. Integrated circuit boards and LCD display boards allow precise monitoring and diagnostics, while hot sIgnition control boards and dual function open circuit boards manage ignition and safety operations. relay boards and transformer/circuit boards regulate voltage and distribute signals, making them indispensable for smooth system performance and longevity.
At PartsHnC, we provide a wide range of air conditioner circuit boards and related parts, including circuit board W/LCD display, integrated circuit board, EAC air cleaner circuit board, hot surface ignition control board, open circuit board DPDT 120V, circuit board 10Kohm 120V, circuit board assembly, dual function open circuit board, transformer/circuit board, circuit board relay, and circuit board dual Cap X-13. These parts are compatible with top brands such as International Comfort Products, Daikin-Mcquay, Carrier, Raypak, Detroit Radiant, and more.
FAQs:
How do I know if my air conditioner circuit board is faulty?
Signs of a faulty circuit board include the AC not turning on, intermittent operation, unusual noises, tripped breakers, or error codes displayed on the system.
Are all HVAC circuit boards universal?
No, circuit boards are model-specific and must match the AC unit’s brand and specifications to ensure proper functionality.
How long does an air conditioner circuit board typically last?
Most HVAC circuit boards last between 8–12 years, depending on usage, voltage fluctuations, and maintenance practices.
What causes an AC circuit board to fail?
Voltage spikes, heat, moisture, dust, or worn-out components can cause a circuit board to fail.
Which AC parts need a circuit board?
Fans, compressors, ignition systems, and HVAC sensors rely on circuit boards.











