GE · Profile GEOSPRING Smart (PF / PH, 2025 on)
GE Profile GEOSPRING Smart (PF / PH, 2025 on) error code F72
Low Voltage while Operating
What it means
Low Voltage while Operating.
What GE says to do
These steps involve electrical testing or parts replacement. GE's manuals tell owners to leave that work to a qualified service technician.
Verify incoming power is connected properly; if this is a continued issue, replace the Main Control Board.
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.
Other Profile GEOSPRING Smart (PF / PH, 2025 on) codes
- F10, F20
- F11, F21
- F14
- F15
- F16, F17
- F18, F63
- 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)
- F79 (Sabbath Water Overtemperature)