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19

19 — Fault in system filling phase

Baxi · Duotec+ GA Compact Boilers

What does 19 mean?

There is an issue occurring during the boiler's system filling process. This can prevent the boiler from reaching optimal operating pressure.

Common Causes

  • Faulty filling tap
  • Issues with water supply pressure during filling

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

    Check the filling tap (faucet) for proper operation and ensure it is fully open during filling.

  3. 3

    Ensure there is adequate water supply pressure to the boiler.

  4. 4

    If the fault persists, contact an Authorised Service Centre.

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 16)Search more codes in this manual