International Comfort Products 1172550 1-Stage Control Board

Thermostatic expansion valves are an integral part of your refrigeration unit. They are responsible for ensuring the right dosage of refrigerant is entering the cooling coil to ensure maximum efficiency in the air conditioning of the system.    These special expansion valves come with a temperature sensor that is mounted at the end of the evaporator coil. They incorporate signals from this sensor to maintain the required temperature of the HVAC system. The thermostatic expansion valve works like a precision device that can regulate the measurements of the liquid refrigerant that flows into the evaporator of your system. This regulation in the flow of the refrigerant is essential to prevent the reverse flow of the refrigerant into the compressor of your system.    Through this mechanism, the thermostatic expansion valve successfully separates the high and low pressure sides of the refrigeration/air conditioning system. The liquid refrigerant enters the expansion ...

Inspect the control board regularly for loose connections, corrosion, or heat damage. Keep the unit clean and free from dust buildup that can cause short circuits. Ensure wiring harnesses are secure and properly seated. Avoid moisture exposure and verify system voltage is within specifications to prevent component damage.

• Burnt or damaged circuit components.
• Intermittent system operation or failure to start.
• Relay or control signal malfunction.
• Loose or corroded wiring connections.
• Power surge damage causing board failure.