BoilerFaultCodesChaffoteaux 1 02 Fault Code
Also written as 102 — same fault.
The Chaffoteaux 1 02 fault code means: your boiler is struggling to read its own internal water pressure because the sensor responsible for checking it has a loose connection or a faulty wire.. It appears on 1 Chaffoteaux model in our database.
Technical description: Capteur de pression court-circuité ou non connecté
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like 1 02: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Chaffoteaux models that show the 1 02 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Chaffoteaux 1 02 fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026