BoilerFaultCodesBaxi E83/E84/E85/E86/E87 Fault Code
Also written as E83E84E85E86E87 — same fault.
The Baxi E83/E84/E85/E86/E87 fault code means: your boiler's main control board has lost contact with the digital interface, meaning the internal components can no longer talk to each other to start the heating process.. It appears on 22 Baxi models in our database.
Technical description: No communication.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Baxi models that show the E83/E84/E85/E86/E87 fault code
Click a model for the full fault code list and model-specific repair notes.
- 400 Combi (range) Repair: £120-£350
- 800 Repair: £120-450
- 80e Repair: £180-450
- Assure Repair: £180-450
- Bermuda Repair: £180-450
- Eco Compact Repair: £120-£350
- Eco Elite Repair: £180-450
- EP Repair: £120-£450
- Netaheat Repair: £180-450
- Performa Repair: £180-£450
- Profile Repair: £180-450
- Profile Prima Repair: £120-350
- Statesman Repair: £120-450
- Suprima 100 Repair: £180-450
- Suprima 115 Repair: £180-350
- Suprima 30 Repair: £180-350
- Suprima 40 Repair: £180-350
- Suprima 50 Repair: £180-350
- Suprima 60 Repair: £180-450
- Suprima 70 Repair: £180-450
- Suprima 80 Repair: £180-320
- Titanium Repair: £120-£450
Source
Baxi E83/E84/E85/E86/E87 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026