Intergas 0.0 Fault Code (Combi Compact HRE)

Safety disclaimer

Fault code summary

Manufacturer

Intergas

Fault code

0.0

Fault type

Low pressure, Pressure sensor

Severity

Not specified

Reset

After the fault is rectified, press the reset key on the operating panel.

Applicable models

HRE 24/18, HRE 28/24, HRE 36/30, HRE 36/40

Quick answer

Low pressure.

What does this fault code mean?

Low pressure.

Common causes

• Central-heating circuit requires repressurising.
• Blocked pressure sensor.

Symptoms

• The fault LED flashes and the main display shows 0.0.

What can the homeowner safely check?

• Read the pressure gauge; only use the installed filling loop in accordance with the user instructions.

Boiler reset information

After the fault is rectified, press the reset key on the operating panel.

When should I call an engineer?

Contact a suitably qualified heating engineer when the fault persists, the boiler locks out, or the manufacturer instructions do not resolve it. For gas appliance work in the UK, use a Gas Safe registered engineer.

Engineer diagnosis

• Check system pressure, the pressure sensor and water loss.

Applicable boiler models

• HRE 24/18
• HRE 28/24
• HRE 36/30
• HRE 36/40

Related fault codes

• 0 — Combi Compact HRE

  Sensor fault after self-check.

  Read fault code
• 1 — Combi Compact HRE

  Temperature too high.

  Read fault code
• 10 — Combi Compact HRE

  Sensor fault S1.

  Read fault code
• 11 — Combi Compact HRE

  Sensor fault S1.

  Read fault code
• 12 — Combi Compact HRE

  Sensor fault S1.

  Read fault code
• 13 — Combi Compact HRE

  Sensor fault S1.

  Read fault code
• 14 — Combi Compact HRE

  Sensor fault S1.

  Read fault code
• 2 — Combi Compact HRE

  S1 and S2 interchanged.

  Read fault code

Manufacturer documentation

Section 11.1: Main display 0.0 — Low pressure; repressurise central heating circuit; blocked pressure sensor.

Last verified

2026-09-12

Frequently asked questions