Hotpoint Dishwasher Error Code AL09
Software recognition error
Software recognition error - Board not programmed, no setting file found.
First step from the service manual
Load a setting file using a Smart Card or PDA.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
Get the full diagnostic procedure for AL09.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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What AL09 means on a Hotpoint dishwasher
AL09 is a software recognition error indicating that the control board has no setting file loaded in its memory. The dishwasher's main control board requires a configuration file to operate, which defines cycle parameters, sensor thresholds, motor timing, and other machine-specific settings. When the board cannot locate this file during its startup self-check, it halts operation and triggers AL09. This typically means the board is either brand new and was never programmed, or it has lost its configuration data due to a firmware fault or memory corruption.
The most direct cause is a control board replacement where the new board was installed without loading the required setting file. Unlike some appliances where a replacement board comes pre-programmed, Hotpoint dishwasher control boards may ship without a machine-specific configuration. The setting file must be transferred to the board using a Smart Card or a compatible PDA-based diagnostic tool that communicates directly with the board's programming interface.
A secondary cause is memory corruption on an existing board, which can occur after a power surge, voltage spike, or failed firmware update. In these cases, the board hardware may be functional but the stored configuration has been wiped or rendered unreadable. Resolving AL09 always requires loading a valid setting file using the appropriate programming tool. Simply resetting the machine or cycling power will not restore the missing configuration data.
Source: manufacturer service documentation.
Common causes of AL09
- 01
Unprogrammed replacement control board
Wiring / connectionA newly installed control board that was never loaded with a setting file is the most frequent trigger for AL09. The board is functional but has no configuration data, so it cannot recognize the appliance it is installed in.
- 02
Setting file lost due to power surge
Wiring / connectionA voltage spike or sudden power loss can corrupt or erase the configuration data stored in the board's non-volatile memory. The board may otherwise appear operational but will throw AL09 on startup because the setting file is no longer intact.
- 03
Failed or interrupted firmware update
Wiring / connectionIf a firmware or settings update was interrupted mid-process, the board can be left in a state where no valid setting file exists. This leaves the board unable to initialize normal operation.
- 04
Faulty control board with corrupted memory
Part replacementIn some cases, the board's onboard memory has physically failed and cannot hold a setting file even after reprogramming attempts. If the AL09 error returns immediately after loading a valid file, board replacement is likely necessary.
Frequently asked questions about AL09
What does AL09 mean on a Hotpoint dishwasher?
Can I fix AL09 on my Hotpoint dishwasher myself?
Will resetting my Hotpoint dishwasher clear the AL09 error?
Is it safe to use my Hotpoint dishwasher when AL09 is showing?
How much does it cost to fix a Hotpoint dishwasher AL09 error?
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