Vaillant gas boiler F.01: what it means and when to call a pro · Serbia
Severity: Stop nowVaillant gas boiler error F.01. The return temperature sensor is disconnected or broken.
Meaning
The return temperature sensor is disconnected or broken.
Severity
Stop now
Stop. Switch it off and call a pro
Steps are not shown for this code because no qualified person has reviewed them yet. What is safe: switch it off and call a pro.
Source
Installation and maintenance instructions ecoTEC plus VU ..6/6-5 OVZ (H-GB), Vaillant
The repair: Boiler temperature sensor replacement
Prices for repairs in Serbia are in RSD.
Other Vaillant codes
- Vaillant F.10 The flow (outgoing) temperature sensor has a short circuit.
- Vaillant F.11 The return temperature sensor has a short circuit.
- Vaillant F.20 The boiler overheated and the safety temperature limiter cut it out.
- Vaillant F.22 The water pressure in the heating system is too low.
- Vaillant F.23 The temperature difference between flow and return is too large, usually because water is not circulating well.
Brands in our catalog for gas boiler: Ariston, Baxi, Bosch, Ferroli, Ideal, Potterton, Vaillant, Viessmann, Worcester Bosch. The same code on another brand is not in the catalog yet, and we do not guess what it means.