F.64 — Electronic System or NTC Sensor Fault (Turbomax Plus)

What does F.64 mean?

This error indicates a general electronic system fault in your Turbomax Plus boiler, specifically mentioning a potential short circuit in the flow or return NTC (temperature) sensors or a wider electronic issue.

• Short circuit in flow NTC sensor
• Short circuit in return NTC sensor
• General electronic fault

Click steps to track your progress.

1. 1

   Perform a boiler reset by switching off the main power supply for 30 seconds and then switching it back on.

2. 2

   Check for any obvious loose connections or damaged wiring that might be visible.

3. 3

   If the fault continues, contact a qualified heating engineer to diagnose the electronic system or sensor issue.