GE Appliances dishwasher IH / 1H: heater fault
IH / 1H means: Inlet heater fault or temperature too high.
How to fix IH / 1H
- Cut power and allow 20 minutes to cool.
- Reset and run a cycle; if it returns, meter the element and check the high-limit thermostat.
- A board relay stuck on is the other cause; replace the board.
When to stop and call a repairer
A heater stuck on is a hazard; do not run the machine unattended with this code.
What it costs
Parts: Element $30 to $60; board $90 to $200.
Service: A home visit from an appliance technician runs $120 to $250 for diagnosis plus the part. Boards are the expensive part; sensors and switches are cheap.
Worth repairing? Depends on which part.
How to check the error log
On most GE dishwashers, hold Start for 5 seconds with the door open to enter the service menu; on models with a hidden display, press Select Cycle and Start together for 5 seconds. The last error shows on the display. Turn power off at the breaker for 60 seconds to reset the board.
Clear the log after a repair so you can tell whether the fault has really gone.
FAQ
What does IH / 1H mean on the GE Appliances dishwasher?
Inlet heater fault or temperature too high. The heater circuit is faulty or the water overheated. Let it cool, then it is a heater, thermostat or relay repair.
Can I fix IH / 1H myself?
DIY difficulty: hard. Cut power and allow 20 minutes to cool. Reset and run a cycle; if it returns, meter the element and check the high-limit thermostat.
How much does it cost to fix IH / 1H?
Element $30 to $60; board $90 to $200. A home visit from an appliance technician runs $120 to $250 for diagnosis plus the part. Boards are the expensive part; sensors and switches are cheap.
Is it worth repairing?
Depends on which part.
When does IH / 1H typically show up?
GE Appliances dishwashers report IH / 1H any. That timing is a useful clue when narrowing the cause.
Can I keep using the machine with IH / 1H showing?
Usually you can finish the drink you are making, but do not ignore it — the underlying fault rarely heals itself. Work through the cheap checks first.
Will IH / 1H clear on its own?
Rarely. A reset or power cycle is worth one try, but IH / 1H with a "hard" difficulty rating almost always means a failed component that has to be replaced.
How long does the repair take?
This one is a bench repair for most owners — the teardown, test and reassembly are the bulk of the work, not the part itself.
Code meanings are compiled from manufacturer service references and repair documentation for the GDT / GDF / GDP / Profile / Cafe; fixes follow documented repairs and owner reports. Model revisions can differ. If your appliance is under warranty, contact the manufacturer before opening it.