Installing a new defrost sensor often resolves this

Compact Profile: Ideal for ignition control retrofits where space between the burner and manifold is limited

Frequent tripping usually indicates a dead short in the low-voltage wiring

Key Benefits for Technicians Precise Pressure Control: Enables a stable 5-12" WC pressure range for varied gas regulator settings

provided the MFD range matches

Trane BRD0477 Terminal Board Installing a new defrost sensorThe Trane BRD0477 Terminal Board is a high integrity 11 pole terminal board engineered for reliable electrical distribution within residential and light commercial HVAC systems. This genuine OEM Trane part serves as a centralized junction point, allowing technicians to consolidate wiring from thermostats, air handlers, and outdoor condensers into a single, organized interface. Built to handle standard low voltage control signals, the BRD0477 features