GE · Profile GEOSPRING Smart (PF / PH, 2025 on)
GE Profile GEOSPRING Smart (PF / PH, 2025 on) error code F18, F63
What it means
Mixing Valve Failure (applies to models with integrated mixing valve)
What GE says to do
Call service
Last checked 2026-10-03.
Safety first
- CAUTION: For your safety, DO NOT attempt repair of electrical wiring, controls, heating elements or other safety devices. Refer repairs to qualified service personnel. (p.30)
- CAUTION: Risk of Shock - Shut off power to the water heater before draining water. (p.12)
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.
- Bradford White AeroTherm (RE2H…-1NCTT models): F18
- Bradford White Heat pump RE2H (-1NCWT models): F18
- GE GeoSpring DEEJS / DFEJS (2015–2016): F18
Other Profile GEOSPRING Smart (PF / PH, 2025 on) codes
- F10, F20
- F11, F21
- F14
- F15
- F16, F17
- F19
- F30
- F31
- F32
- F34
- F35
- F36
- F37
- F38
- F39
- F41
- F42
- F43
- F46, F53
- F47
- F48
- F49
- F50
- F51
- F52
- F54
- F55
- F56
- F57
- F60
- F61
- F62
- F70 (Anode Depleted)
- F73
- F74
- F75 (Dry Tank Fault)
- F76
- F77
- F78
- F81
- F90
- F91 or F92
- F93
- F94
- F95
- F96
- H20
- F12 (Lower Element Failure (Over Current Condition))
- F13 (Upper Element Failure (Over Current Condition))
- F33 (T2/T1 Failure (Drift))
- F71 (Current Sensor Failure)
- F72 (Low Voltage while Operating)
- F79 (Sabbath Water Overtemperature)