F18
Hotpoint
Communication Error Between Main Control and Display (Data Bus Fault)
Washer displays F18; may freeze mid-cycle; display may be blank or show erratic characters.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose or damaged communication harness, Faulty display board, Faulty main control board, Electrical noise or surge damage
How to Fix / Troubleshooting
Safety first: Unplug the washer before accessing electronics.
F18 is a communication fault similar to F12 but often on newer digital models.
- Power cycle: Unplug for 10–15 minutes, then reconnect and test. If F18 returns, proceed.
- Inspect harness: Remove the top cover and control panel. Locate the communication cable between the main PCB and display board. Ensure it is fully seated and not damaged.
- Check for moisture: Look for signs of water around the control panel or main board. Dry thoroughly and fix any leaks (e.g., dispenser, door seal).
- Board diagnosis: If cables are good, one of the boards is likely faulty. Visual inspection for burnt components can help identify the failed board. Replacement of the main PCB is common.
- Professional service: Because this involves board-level diagnosis, many users will prefer to contact a Hotpoint service technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (Hotpoint PCB Module)
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