What the manual says
Manufacturer manualSystem pressure too low 1. Vent the heating system. 2. Top up water until the preset pressure is reached. 3. Replace the cable to the pressure sensor. 4. Replace the pressure sensor.
From this model's manual
Verified against the Worcester Bosch/Worcester Bosch 8000 Life System 2 installation & service manual.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
All 21 fault codes on the Greenstar 8000 Life GR8300iW 35 S
Seeing a different code? Every code this model can display, in one place.