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134

134 — Gas valve blocked

Baxi · Duotec+ GA Compact Boilers

What does 134 mean?

The gas valve, which controls gas flow to the burner, is blocked or malfunctioning, preventing the boiler from receiving gas for ignition.

Common Causes

  • Mechanical blockage or fault in the gas valve
  • Issues with gas supply pressure
  • Integrity or positioning problems with sensing and ignition electrodes

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Press and hold down the Reset button for 2 seconds to try clearing the fault.

  2. 2

    Ensure the main gas tap to the boiler is fully open.

  3. 3

    Check if other gas appliances in your home are working to confirm gas supply.

  4. 4

    If the fault persists, contact an Authorised Service Centre to inspect the gas valve and electrodes.

Browse all codes in this manual (37)
Verified technical data. Last updated: April 2026

Related Faults

0909 — Gas valve connection error1010 — External probe sensor faulty109109 — Air in boiler circuit (temporary fault)
Source: Baxi Duotec+ GA Compact Boilers
Open Manual (Page 6)Search more codes in this manual