RUNTRU FURNACE & AC REPAIR

RunTru heat pumps use proven, Trane-backed designs focused on consistent performance rather than advanced or experimental features.

RunTru systems prioritize dependable operation and value, while higher-end Trane models offer more advanced controls and features.

Yes. RunTru heat pumps can be paired with a gas furnace as part of a dual-fuel setup.

Yes. RunTru ductless systems are supported by Trane’s manufacturing and warranty infrastructure.

They work well in home additions, basements, offices, and rooms without ductwork.

Professional installation is recommended, but the process is similar to other ductless systems.

PROBLEM: Loss of internal communication or control board failure.
FIX: Try resetting the furnace. If the code returns, this indicates a control board issue. Contact One Stop HVAC to inspect and replace the control board safely.

PROBLEM: Ignition attempts exceeded and the furnace failed to light.
FIX: Confirm the gas supply is on and the thermostat is set correctly. If the furnace still will not ignite, we can diagnose and repair the ignition system for you.

PROBLEM: Flame was established but repeatedly lost, causing a system lockout.
FIX: This points to flame sensing or gas delivery issues. Contact us to safely restore proper operation and prevent further lockouts.

PROBLEM: Pressure switch is shorted.
FIX: Check exterior vent pipes for snow or debris. Clear any visible blockage and restart the system.

PROBLEM: Pressure switch is open and not closing properly.
FIX: Inspect the pressure switch hose for obvious disconnections or blockages and ensure it is properly attached.

PROBLEM: A safety limit switch has opened due to overheating or airflow restriction.
FIX: Replace the air filter and make sure supply and return vents are open. If the code continues after airflow checks, One Stop HVAC can inspect the system and correct the issue.

PROBLEM: Flame is detected when there should be no flame present.
FIX: This is a serious gas-related safety issue. Turn off the furnace and contact One Stop HVAC immediately.

PROBLEM: Incorrect electrical polarity.
FIX: This is an electrical wiring issue. Contact us so we can correct the wiring safely.

PROBLEM: Improper or missing grounding.
FIX: Grounding problems require professional correction. One Stop HVAC can properly restore grounding to protect your system.

PROBLEM: Igniter failure or igniter relay malfunction.
FIX: Ignition components require proper testing. We can diagnose and replace the faulty part to restore safe operation.

PROBLEM: Gas valve is energized when it should be off.
FIX: This is a critical safety concern. Shut off the furnace and contact One Stop HVAC right away.

PROBLEM: Flame current is low but still allowing operation.
FIX: The system may continue running, but performance is reduced. We can inspect and correct the issue before it leads to a shutdown.

PROBLEM: Inducer limit switch or condensate pressure switch is open.
FIX: Check for blocked condensate drains or visible vent obstructions and clear them if present.

PROBLEM: Internal fuse is open.
FIX: Do not replace the fuse without identifying the cause. Contact One Stop HVAC so we can safely diagnose the underlying issue.

PROBLEM: Communication fault between the indoor and outdoor unit.
FIX: Turn the system off at the breaker for a few minutes and restart it. If the error returns, contact us so we can inspect wiring, connections, and control boards.

PROBLEM: Temperature or pressure sensor fault in the outdoor unit.
FIX: Check that the outdoor unit is clear of debris and has proper airflow. If the code remains, One Stop HVAC can diagnose and replace the faulty sensor.

PROBLEM: Voltage or IPM (Integrated Power Module) protection triggered.
FIX: Power the system off and allow it to reset. Repeated E5 errors indicate an electrical or control issue. Contact us for professional inspection.

PROBLEM: Overcurrent protection or multiple internal faults detected.
FIX: Shut the system down and restart it once. If the code continues, we can safely test electrical components and load conditions.

PROBLEM: Internal drive module protection related to power, current, or temperature.
FIX: These issues are not homeowner-serviceable. Contact One Stop HVAC to diagnose and repair internal module faults.

PROBLEM: Outdoor fan motor protection triggered due to abnormal operation.
FIX: Remove visible obstructions around the outdoor unit. If the error persists, we can inspect the fan motor and related controls.

PROBLEM: The system has detected abnormal compressor operation and shut down to prevent damage.
FIX: Turn the system off and avoid restarting repeatedly. Contact us so we can identify the cause and prevent further damage.