F5 Error on Teka Ceramic Hobs

What the F5 error suggests on a Teka ceramic hob

The F5 error on a Teka ceramic hob usually appears when the hob detects an internal communication fault between the control electronics (touch panel) and the electronics that manage one or more zones. Put simply: the control tries to “talk” to the module that delivers power to the zones, but the response does not arrive as it should, and the system protects itself by blocking use.

This type of warning can show up in several ways:

• One zone cannot be activated and the hob eventually shows F5.
• The hob turns on, but shortly after it stops or gets “stuck halfway” (the panel responds, but it does not heat).
• The error appears after a power outage, a micro power cut, or a reconnection at the breaker panel.
• The issue is intermittent: some days it works and other days the code appears with no clear pattern.

In practice, F5 is rarely caused by “incorrect use”. It is more often related to an unstable supply, interconnecting connectors/wiring with poor contact, or a module that is starting to fail and no longer communicates consistently.

How to clear F5 and check the essentials

Because this involves mains voltage, avoid opening the hob if you are not a professional. These steps help you rule out the most common causes and reach a much clearer diagnosis if you ultimately need to call service.

1. Do a “long” electrical reset
   • Switch off the circuit breaker for the hob circuit.
   • Wait 3–5 minutes so the electronics can discharge.
   • Restore power and test a single zone at medium power.

   If F5 was triggered by a one-off mains event, this reset is often the most effective shortcut.

2. Identify whether the fault is linked to a specific zone
   • Test each zone separately, without using multiple zones at the same time.
   • If F5 always appears with the same zone, the problem is usually “localized”.
   • If it appears with any zone or immediately on power-up, it points to a general communication or power supply issue.
3. Let the cabinet breathe and avoid heat build-up
   • Remove items from the drawer below if they are pressed against the base of the hob.
   • If there is an oven underneath, run the test with the oven switched off.
   • If the cut-out is very enclosed, heat can destabilize the electronics and trigger lock-outs.
4. If the error started after an installation or renovation, check the usual suspects (with a professional)
   • Check terminal tightness and cable condition (a loose terminal causes intermittent faults).
   • Confirm the connection follows the model’s wiring diagram (voltage and bridging links where applicable).

   An “imperfect” supply can trigger communication symptoms, especially after micro power cuts.

5. Do not force it with repeated attempts
   • If F5 appears, avoid switching on/off repeatedly.
   • Make one attempt after the reset and move to the next step if it returns.
6. When it makes sense to call the service center
   • F5 returns after several full resets and with good ventilation.
   • The error always repeats on the same zone (consistent lock-out).
   • The hob heats intermittently, but then cuts out and shows the code.

   In these cases, it is typically necessary to check internal connectors, interconnecting wiring and, if required, the power module or the control.

If F5 disappears after a long reset and does not return, it was usually a “glitch” caused by the mains supply or one-off conditions. If it repeats, treat it as a sign of unstable communication: first check installation/ventilation and, if everything is correct, have the electronics inspected.