UK Appliance Error Codes

Error code

Hotpoint Washing Machine Error Code F18

Control or wiring communication fault The most likely cause is loose or damaged wiring. Check first: leave it powered off for a few minutes before trying one restart.

Last updated: 2 April 2026

Quick answer

F18: what does it mean and how to fix

high severity

What does it mean?

Control or wiring communication fault

How to fix first

Switch the machine off and unplug it from the mains.

Why is this happening?

Loose or damaged wiring

When should I call an engineer?

Communication faults usually need professional electrical diagnosis rather than further user troubleshooting.

What does this error code mean?

Hotpoint washing machine error code F18 usually points to an internal communication problem between the control board and another electrical component.

In practice, F18 is commonly linked to Loose or damaged wiring, Control board issue, or A connected component failing to respond correctly.

Start with this safe check: Switch the machine off and unplug it from the mains. If the code returns, the fault worsens, or the appliance does not behave normally, communication faults usually need professional electrical diagnosis rather than further user troubleshooting.

Why is this happening?

  1. Loose or damaged wiring
  2. Control board issue
  3. A connected component failing to respond correctly

How to fix this safely

  1. Switch the machine off and unplug it from the mains.
  2. Leave it powered off for a few minutes before trying one restart.
  3. Stop if the code comes back immediately after the reset.

Reset steps

  1. Reconnect power after a short pause.
  2. Retry a short cycle once only.

When to call an engineer

Communication faults usually need professional electrical diagnosis rather than further user troubleshooting.

Safety warning

Disconnect the appliance from the mains and do not open the cabinet or handle internal wiring yourself.

Useful hub links

Related power and control fault codes

After resolving this fault, use the right wash setting to help prevent repeat issues.

Relevant guide

Frequently asked questions

Can I keep using a Hotpoint washing machine with F18 showing?+

It is usually better to pause use until you have completed the safe first checks for F18, then test the machine with a short programme.

Will resetting clear F18 for good?+

A reset may clear a temporary interruption, but if F18 comes back after the first safe checks, the underlying fault still needs attention.