Bradford White · Heat pump RE2H (-1NCWT models)
Bradford White Heat pump RE2H (-1NCWT models) error code FL
What it means
Control checks to ensure that T3a and T3b evaporator inlet and outlet temperatures are within 2.5°F of the T5 ambient temperature 20 minutes after defrost begins.
The manual says the control must detect this 10 time(s) before the code is displayed.
What Bradford White says to do
These steps involve electrical testing or parts replacement. Bradford White's manuals tell owners to leave that work to a qualified service technician.
Check airflow: fan operation, dirty filter, dirty evaporator. Check T3a, T3b, T5 sensor mounting, wiring and resistance. Check EEV wiring at control, coil placement, and operation.
Last checked 2026-10-03.
Safety first
- DISCONNECT POWER BEFORE SERVICING. IMPORTANT: RECONNECT ALL GROUNDING DEVICES. All parts capable of conducting electrical current are grounded; grounding wires, screws, straps, clips, nuts or washers removed for service must be returned to their original condition and properly fastened. (p.1)
From the manufacturer's manual for this series.
The same code on other models
Codes mean different things on different heaters. Match the series to the model number on your rating label.