GE Appliances documents H2O Supply as a front-load washer water-supply or pressure-sensing related error, with supply-on verification before service.
Applies to
GE Front Load Washer H2O Supply; United States. This page is not a brand-wide diagnosis.
What this symptom can indicate
The washer may show H2O Supply and run the drain pump for several minutes to prevent a potential overfill condition.
Checks that do not require disassembly
Confirm the display reads H2O Supply.
Make sure the water supply to the washer is turned on.
Do not interrupt the washer if it is running the drain pump to prevent potential overfill.
Related error codes
H2O-SUPPLY
Signs of a safety issue
Stop if leakage appears, electrical safety is uncertain, or the error remains after confirming supply is on.
Information to collect before calling a technician
Record model label, valve state, pressure observations, drain-pump behavior, and exact displayed message.
Why this scope matters
This symptom page is attached to GE Front Load Washer H2O Supply. It is not a brand-wide diagnosis.
Citations
Washer - H2O Supply Error
GE Appliances documents H2O Supply on front-load washers as related to pressure sensor issue or water supply valves being off, with service recommended if supply is confirmed on.