E02-380 High

Potterton E02-380 Fault Code

Also written as E02380 — same fault.

The Potterton E02-380 fault code means: your boiler is having trouble communicating with its internal temperature controls, which means it cannot accurately sense how hot the water needs to be and has safely shut down to prevent overheating.. It appears on 1 Potterton model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Potentiometer/Wiring Harness Assy
Typical repair cost £150-250 (including labour)

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 →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like E02-380: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Potterton models that show the E02-380 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Potterton E02-380 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026