International Comfort Products 1085472 Defrost Electronic 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 ...

Maintain a clean control compartment to prevent dust from interfering with circuitry. Periodically check for loose terminals and ensure wires are firmly secured. Look for any signs of heat stress or corrosion. Always cut power before inspection to avoid electrical risky and accidental component damage.

• Failure to initiate defrost cycle leading to coil icing.
• Board not responding to temperature or timing inputs.
• Erratic switching affecting system operation.
• Burnt circuits causing total loss of control.
• Communication faults with connected components.