- Boilers
- Gas boiler
A01
Beretta A01 on a gas boiler: ACF module lockout
Risk level
High
Professional inspection is recommended.
Urgency
High
Quick answer
Beretta A01 is an ACF module lockout alarm, a permanent lockout. Check the gas tap is open, turn the function selector to off, wait 5 to 6 seconds and set it back to summer or winter. If it does not restart, call the technical service.
Safety first
Stop and check this first
- If you smell gas: Beretta says not to operate electrical switches, the phone or anything that could spark, to ventilate by opening doors and windows and to close the main gas tap. Then leave the home and call your gas distributor's emergency number from outside.
- Do not repeat the release over and over: if the attempts do not restart the boiler, Beretta says to call its technical service. Do not open the boiler or try to repair it.
Safe checks you can perform
- Gas smell first
- Gas tap and supply
- Release with the function selector
- Lockout check by the technician
Leave these tasks to a qualified professional
- Do not attempt this professional task: Gas pressure measurement
- Do not attempt this professional task: Ignition and flame signal check
- Do not attempt this professional task: Combustion analysis
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.
Gas pressure measurement
What they doThe technician measures gas pressure at the boiler with a gauge and compares it with Beretta's specification.
They must show youthe measured value against the specification.
In writingthe pressure measured.
Ignition and flame signal check
What they doThe technician checks the ACF module's ignition and flame detection.
They must show youthe flame signal reading and what was checked.
In writingwhat was cleaned or replaced and why.
Combustion analysis
What they doThe technician carries out a combustion analysis and compares the results with the product specifications, as Beretta requires at servicing.
They must show youthe analyser printout.
In writingthe values measured.
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.
Gas smell first
- Who:
- you.
- How:
- without touching switches, notice whether it smells of gas near the boiler.
- Result that matters:
- whether there is a gas smell.
- If it smells of gas:
- do not release the lockout; follow the gas warning on this page.
- If there is no smell:
- check the gas tap.
- Evidence to keep:
- a note of the time and what you noticed.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
Gas tap and supply
- Who:
- you.
- How:
- check the boiler's gas tap is open, as Beretta requires for start-up, and whether the gas hob works.
- Result that matters:
- whether gas reaches the boiler.
- If it was closed or there is no gas at home:
- open it or contact your distributor.
- If there is gas:
- go on to the release.
- Evidence to keep:
- a photo of the tap and a note of whether the hob worked.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
Release with the function selector
- Who:
- you.
- How:
- turn the function selector to off (OFF), wait 5 to 6 seconds and set it back to summer or winter, as Beretta describes.
- Result that matters:
- whether the boiler lights again.
- If it starts and A01 does not return:
- note the date.
- If the attempts do not restart the boiler or A01 returns:
- call the technical service.
- Evidence to keep:
- a photo of the display with A01 and the time of each attempt.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
Lockout check by the technician
- Who:
- gas technician from the technical service.
- How:
- reads the cause of the lockout, measures gas pressure and checks ignition and flame detection.
- Result that matters:
- what caused the ACF module lockout.
- If gas pressure is too low:
- it is a supply problem.
- If gas arrives properly:
- the cause is in ignition, the flame or the electronics.
- Evidence to keep:
- a report of what was measured and repaired.
Beretta reserves servicing and maintenance for qualified staff of its technical service: opening the boiler is not the user's job.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
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
- Boilers
- Brand
- Beretta
- Product type
- Gas boiler
Known code variants
- A-01
- aerotermia Toshiba A01
- Alhena Tech C A01
- Anomalía A01 Ferroli
- Beretta A 01
- bomba de calor Toshiba A01 bomba
- caldera Lamborghini A01
- Ciao Green A01
- Cointra A 01
- Error A01 Beretta
- Error A01 Cointra
- error A01 Estia
- Error A01 Ferroli
- Estia error A01
- Estia R32 A01 caudal de agua
- Estia R32 A01 water flow
- Ferroli A01
- Ferroli A01 boiler
- Ferroli A01 caldera
- Ferroli error A01
- Lamborghini A01
- Lamborghini boiler A01
- Lamborghini Caloreclima A01
- Lamborghini el quemador no se enciende
- Lamborghini no burner ignition
- Superlative A01
- Toshiba air to water A01 pump
- Toshiba Estia A01
- Toshiba heat pump A01
- Toshiba HWT A01
What it means
In the Ciao Green C.S.I. status table, A01 is the ACF module lockout alarm and its type is permanent lockout; the same table has a separate ACF electronic fault alarm. To release faults A01, A02 and A03, Beretta says to turn the function selector to off, wait 5 to 6 seconds and return it to the desired position. If the release attempts do not restart the boiler, you must call the technical service. The code does not say what caused the lockout.
Warnings and stop conditions
- Criticaleditorial warning
If you smell gas: Beretta says not to operate electrical switches, the phone or anything that could spark, to ventilate by opening doors and windows and to close the main gas tap. Then leave the home and call your gas distributor's emergency number from outside.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
- Highsource verified
Do not repeat the release over and over: if the attempts do not restart the boiler, Beretta says to call its technical service. Do not open the boiler or try to repair it.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
Symptoms and causes
Probable causes · in order
- Gas closed or no supplyPossible
To light the boiler, Beretta says to open the gas tap to let fuel through. If the tap is closed or there is no gas at home, the boiler cannot run.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
- One off lockout that clearsPossible
If the boiler starts after the release and A01 does not return, the lockout was isolated.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
- Fault that needs the technical servicePossible
If release attempts do not restart the boiler, Beretta says to call its technical service; only the technician finds the cause with the boiler open.
Evidence: Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
Virtual technician
Does A01 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
Beretta Ciao Green 25 y 29 C.S.I., manual de instalación y uso
Beretta · 2015 · manual
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