What does the F1 code mean on Renova?

Ignition fault (flame does not start). If the gas valve VK4105G1146 does not open or is misadjusted, gas does not reach the burner and ionisation is not established; check control from the PCB, continuity of coils, and adjustment/pressure in the valve.

What does the fault code F.27 mean in Renova?

Flame simulation (implausible flame detection). Internal leaks in the gas valve VK4105G1146 may allow gas to pass with the burner off, generating a flame signal; check the tightness and closing delay of the valve and rule out moisture in the electronics.

What does the fault code F.28 mean in Renova?

Start-up fault: failed ignition. If the gas valve VK4105G1146 does not open or is defective/improperly adjusted, there is no gas supply and the flame does not ignite; check activation signal, gas pressure, and effective opening of the valve.

RefurbishedRenova Gas valves

Gas Valve Renova Teknic F 23 E Ref. VK4105G1146

Name: Gas Valve Renova Teknic F 23 E Ref. VK4105G1146
Brand: Renova
SKU: VGRTF23E
Price: 45 EUR
Availability: InStock

45 €VAT includedIn stock · 5 units

Gas valve: reconditioned spare part that regulates and modulates the gas flow to the burner. Useful if there are ignition faults or the flame does not modulate. Reference VK4105G1146. Includes a one-year warranty and delivery within 2–4 working days in the EU.

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Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: VK4105G1146
Brand: Renova
Type of part: Gas valves
Available units: 5 units in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

Code	What does it mean?	Cause and diagnosis (this part)
F1	Ignition fault (flame does not start).	If the gas valve VK4105G1146 does not open or is misadjusted, gas does not reach the burner and ionisation is not established; check the control from the PCB, continuity of coils, and adjustment/pressure in the valve.
F.27	Flame simulation (implausible flame detection).	Internal leaks in the gas valve VK4105G1146 may allow gas to pass with the burner off, generating a flame signal; check the valve's tightness and closing delay, and rule out moisture in the electronics.
F.28	Start-up fault: ignition failed.	If the gas valve VK4105G1146 does not open or is defective/improperly adjusted, there is no gas supply and the flame does not ignite; check activation signal, gas pressure, and effective opening of the valve.

Gas Valve Renova Teknic F 23 E Ref. VK4105G1146

Key Data

Spare Parts Related Boiler Teknic F 23 E