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Sep 19 2026
A/C CONTROL BOARD — THE BRAIN BEHIND YOUR COMFORT

A/C CONTROL BOARD — THE BRAIN BEHIND YOUR COMFORT

Your A/C control board coordinates important electrical functions throughout the system. It receives signals from the thermostat and helps control the blower motor, compressor, fan, and other components in the proper sequence.

✔ Communicates with the thermostat
✔ Controls important system functions
✔ Helps components operate in the correct sequence
✔ Supports consistent and reliable cooling
✔ Monitors certain safety controls
✔ Helps prevent improper system operation

⚠️ A failing control board may cause your A/C to stop working, run intermittently, fail to start, display error codes, or prevent the blower or outdoor unit from operating correctly.

Because other problems can imitate control-board failure—including loose wiring, a failed transformer, motor issues, or incorrect blower connections—a complete professional diagnosis is essential before replacing the board.

Keep your A/C operating correctly with professional service from Uptown Heating & Air Conditioning.

#ACControlBoard #HVACControlBoard #ACElectrical #ACDiagnostics #ACRepair #ACService #HVACRepair #HVACService #CoolingSystem #BlowerMotor #Thermostat #HomeComfort #RichmondTX #HoustonHVAC #TexasHeat #UptownHeatingAndAirConditioning

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Sep 19 2026
A/C LOW-PRESSURE SWITCH — IMPORTANT SYSTEM PROTECTION

A/C LOW-PRESSURE SWITCH — IMPORTANT SYSTEM PROTECTION

Your A/C low-pressure switch monitors the pressure on the low side of the refrigeration system. If pressure drops below a safe level, it can shut down the system to help protect the compressor and other major components.

✔ Monitors low-side refrigerant pressure
✔ Helps protect the compressor from damage
✔ Can stop operation during unsafe conditions
✔ May detect low refrigerant or restricted airflow
✔ Helps prevent evaporator-coil freezing
✔ Supports safe and reliable cooling

⚠️ When the low-pressure switch opens, your A/C may stop cooling or repeatedly turn on and off. Possible causes include low refrigerant from a leak, a dirty filter, a frozen evaporator coil, restricted airflow, or a system blockage.

The switch should never be bypassed. A licensed HVAC technician should inspect the complete system and identify the condition causing the pressure to drop.

Protect your A/C with professional diagnostics from Uptown Heating & Air Conditioning.

#LowPressureSwitch #ACPressureSwitch #ACProtection #CompressorProtection #ACRepair #ACService #HVACRepair #HVACService #RefrigerantLeak #FrozenCoil #AirflowProblems #CoolingSystem #HomeComfort #RichmondTX #HoustonHVAC #UptownHeatingAndAirConditioning

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