CodeRegistry
Brands
  1. Home
  2. Vaillant
  3. ecoTEC plus Boilers
  4. F.62
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

F.62

F.62 — Gas valve shut off delay

Vaillant · ecoTEC plus Boilers

What does F.62 mean?

The gas valve is not shutting off properly or with a delay. This can indicate a leak in the gas valve or a defect in the boiler's electronics, which is a critical safety concern.

Common Causes

  • Gas valve leaking.
  • Electronics defective.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Immediately turn off the gas supply to the boiler if you suspect a gas leak or smell gas.

  2. 2

    Reset the boiler by pressing the reset button. Do not attempt to reset multiple times if the issue recurs.

  3. 3

    Contact a qualified service technician immediately to inspect the gas valve and electronics.

Browse all codes in this manual (100)
Verified technical data. Last updated: April 2026

Related Faults

F.0F.0 — Flow–NTC open circuitF.1F.1 — Return–NTC open circuitF.10F.10 — Flow NTC short circuit
Source: Vaillant ecoTEC plus Boilers
Open Manual (Page 43)Search more codes in this manual