J
Janet PerezSep 12, 2025
What causes High Temp Lockout in Trane Horizon OAB Air Conditioner?
- TTimothy CareySep 12, 2025
If your Trane Air Conditioner is experiencing a high-temperature lockout, consider the following potential causes: * Heat may be overridden ON. Turn off heat override. * There could be low discharge air volume. Check and increase discharge air volume. * The air filters might be dirty. Clean or replace dirty air filters. * The gas heater manifold pressure might be too high. Adjust high gas heater manifold pressure. * The OA/RA damper position could be incorrect. Check and adjust OA/RA damper position. * The high-temperature limit might not be properly installed or wired. Check and properly install or wire high temp limit. * The DAT sensor could be malfunctioning. Replace the malfunctioning DAT sensor.