- Appliances
- Cooktops
E8
AEG E8 on hob: missing phase or communication error
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
Your AEG induction or ceramic hob shows E8 (or E822) because of incorrect installation with a missing phase, or a communication error in the electronics. If it is new, tell the installer; if it worked before, disconnect it for 30 seconds and stop using it if E8 returns.
Safety first
Stop and check this first
- AEG advises against using the hob until E8 is resolved: disconnect it and do not reconnect it until you are sure it is safe. Do not handle the phase connection yourself.
Safe checks you can perform
- Age of the installation
- Restart by disconnecting for 30 seconds
- Phase connection check
Leave these tasks to a qualified professional
- Do not attempt this professional task: Power connection check
- Do not attempt this professional task: Electronics diagnosis
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Power connection check
What they doAn electrician checks with an instrument that every intended phase reaches the hob and that the connection follows the installation instructions.
They must show youthe reading on each phase or the corrected connection.
In writingwhat was measured, what was corrected and a test with every zone.
Electronics diagnosis
What they doAn AEG authorised technician checks communication between the electronics parts when the installation is correct.
They must show youthe code reproduced with the installation verified.
In writingthe check, the replaced part with its reference and the final test.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Age of the installation
- Who:
- you.
- How:
- note whether the hob is newly installed or had been working fine before E8.
- Result that matters:
- choosing the path AEG describes.
- If it is new:
- do not use it and ask the installer to check the connection against the installation instructions.
- If it worked before:
- move on to the 30 second restart.
- Evidence to keep:
- the installation date and a photo of the full code.
Evidence: Hob displays error message E8 / E822
Restart by disconnecting for 30 seconds
- Who:
- you.
- How:
- disconnect the hob at the household RCD breaker or circuit breaker, wait at least 30 seconds and switch it back on, as AEG instructs for built in appliances.
- Result that matters:
- whether the hob works correctly after the restart.
- If it works without E8:
- it was a one off electronics error; watch for repeats.
- If E8 returns:
- disconnect it and do not use it until the technician visits.
- Evidence to keep:
- a note of whether it returned and after how long.
Evidence: Hob displays error message E8 / E822
Phase connection check
- Who:
- the installer or a qualified electrician, never you.
- How:
- ask them to check the hob power connection against AEG's installation instructions.
- Result that matters:
- confirming whether a phase is missing.
- If a phase was missing and is corrected:
- that was the cause if E8 does not return.
- If the connection is correct:
- book an AEG authorised technician.
- Evidence to keep:
- the report of what was checked and corrected.
The hob mains connection, possibly multi phase, may only be checked by a qualified installer or electrician with the power cut.
Evidence: Hob displays error message E8 / E822
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- AEG
- Product type
- Cooktops
Known code variants
- AEG E8
- AEG E822
- AEG hob E8
- Baxi heat pump E8
- Baxi HP40 E8
- Baxi HP50 E8
- Beko BM1WU E8 code
- Beko lavadora E8
- Beko washer E8
- Beko washing machine E8 not taking water
- Bosch Compress E8
- Bosch E8 caudal de agua
- Bosch E8 water flow
- Bosch heat pump E8
- código E8 Beko BM1WU
- Compress 2000 AWF E8
- CS2000AWF E8
- E08
- E 8
- E822
- E8xx
- E:8
- error E8 aerotermia Bosch
- Gree E8
- Junkers E8
- lavadora Beko E8 no coge agua
- placa AEG E8
What it means
AEG defines E8, or variants such as E822, as incorrect installation (missing phase) or a communication error between parts of the hob electronics. On a new installation, the hob is usually connected incorrectly to the power supply; on a hob that was working, AEG treats it as an electronics error and suggests restarting it by disconnecting it for at least 30 seconds. The code alone does not show which part fails, and AEG advises against using the hob until it is resolved.
Warnings and stop conditions
- Highsource verified
AEG advises against using the hob until E8 is resolved: disconnect it and do not reconnect it until you are sure it is safe. Do not handle the phase connection yourself.
Evidence: Hob displays error message E8 / E822
Symptoms and causes
Probable causes · in order
- Connection with a missing phaseCommon
The warning appears on a newly installed hob; AEG asks you to check the connection against the installation instructions and contact the installer.
Evidence: Hob displays error message E8 / E822
- Electronics communication errorPossible
The hob worked fine and E8 appears after some time; it may clear after disconnecting it for 30 seconds.
Evidence: Hob displays error message E8 / E822
- Fault needing a technicianPossible
E8 returns after the restart; AEG recommends a visit by an authorised technician.
Evidence: Hob displays error message E8 / E822
Virtual technician
Does E8 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Hob displays error message E8 / E822
AEG · 2026 · official_doc
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