Bradford White · AeroTherm (RE2H…-1NCTT models)
Bradford White AeroTherm (RE2H…-1NCTT models) error code Dirty Filter (F14)
What it means
Filter LED is on, and audible alarm is sounding. Filter is too dirty to enable proper function of water heater. Number of "Dirty Filter" counts are stored in the "F14" code and can be monitored via the control when it is placed in Diagnostics Mode. The evaporator is operating at a colder temperature than the ambient temperature as measured by T5.
The manual says the control must detect this 5 time(s) before the code is displayed.
What Bradford White says to do
Filter must be cleaned when the alarm is displayed. Leave the power ON; squeeze the two tabs and lift to remove the filter from the top of the unit; vacuum it, wipe it with a damp cloth, or rinse it with warm water; once dry, align it into the slots and push it down into place; then press and hold the FILTER button to reset the alarm. If the dirty filter alarm returns within a few days after cleaning and resetting, it may be an indication of a refrigerant leak. Further diagnosis by a service technician is necessary.
Source for these steps: Heat Pump Water Heater Installation & Operation Instruction Manual (RE2H50S*-1NCTT, RE2H65T*-1NCTT, RE2H80T*-1NCTT), 238-52169-00C (ECO 8424), page 24
Last checked 2026-10-03.
Safety first
- DANGER: Shut OFF power to the water heater before draining water to avoid risk of shock. (p.23)
- CAUTION: For your safety, do NOT attempt to repair the water heater or any of its parts. Refer any repairs to a qualified service technician. (p.22)
- Fault codes should only be used to help identify components which require testing. Never replace a part based solely on a fault code. The control can generate a false fault if the right conditions exist. (p.28)
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.
- GE GeoSpring GEH50DEED (2012–2014): Dirty Filter (F14)
- GE GeoSpring DEEJS / DFEJS (2015–2016): Dirty Filter (F14)
- Bradford White Heat pump RE2H (-1NCWT models): DirtyFilter (F14)
- GE Profile GEOSPRING Smart (PF / PH, 2025 on): F14