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Error code reference

Dacor Range Error Code F6

EEPROM checksum error

Dacor codesDacor range codes

EEPROM checksum error - occurs when the checksum value differs from the value programmed into the software; only time of day and timer operations will work.

First step from the service manual

Replace the ERC.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F6 means on a Dacor range

The F6 error code on a Dacor range indicates an EEPROM checksum error. The EEPROM (Electrically Erasable Programmable Read-Only Memory) is a small non-volatile memory chip embedded within the Electronic Range Control (ERC), which is the main control board. This chip stores critical configuration data, calibration settings, and operational parameters that the control software reads on startup. A checksum is a calculated value the software uses to verify that stored data is intact and uncorrupted. When the computed checksum does not match the value originally programmed into the software, the control detects a data integrity failure and triggers F6.

When this error is active, the ERC enters a degraded operating mode. Only basic timekeeping functions and timer operations remain available. All cooking functions, including bake, broil, convection, and any other oven or surface element controls, are disabled. This is a deliberate safety limitation that prevents the range from operating on potentially corrupted configuration data, which could result in incorrect temperature regulation or unpredictable behavior.

The most common root cause is internal failure of the EEPROM chip itself, either from age, voltage spikes, or a write cycle error that corrupted the stored data. Power surges or sudden power interruptions during a write operation can leave the EEPROM in an inconsistent state where the checksum can never be satisfied. Because the EEPROM is soldered directly onto the ERC board, it is not a field-replaceable component on its own. The standard corrective action is full replacement of the ERC assembly.

Source: manufacturer service documentation.

Common causes of F6

  1. 01

    Failed or corrupted EEPROM chip

    Part replacement

    The EEPROM chip on the ERC has experienced internal failure or data corruption, causing the checksum calculation to fail on every startup. This is the most common cause and requires replacement of the ERC assembly.

  2. 02

    Power surge or voltage spike

    Part replacement

    A sudden voltage spike can corrupt data stored in the EEPROM or damage the chip itself during a write cycle. If the error appeared after a power outage or storm event, this is a likely contributing factor.

  3. 03

    Interrupted write cycle during power loss

    Part replacement

    If power was cut while the ERC was writing data to the EEPROM, the memory can be left in a partially written state that produces a permanent checksum mismatch. The control cannot self-recover from this condition.

  4. 04

    Age-related ERC degradation

    Part replacement

    Over time, EEPROM cells can degrade and lose their ability to hold data reliably, especially in high-heat environments like a range control compartment. Older units with no history of power events may experience this failure mode.

See the test procedure for each cause

Frequently asked questions about F6

What does F6 mean on a Dacor range?
F6 on a Dacor range indicates an EEPROM checksum error. The main control board contains a memory chip that stores configuration data, and the software has detected that the stored data does not match the expected checksum value. When this error is active, only the clock and timer functions will work, and all cooking operations are disabled until the issue is resolved.
Will resetting the power clear the F6 error on my Dacor range?
A power reset is unlikely to clear F6 because the error reflects corrupted or invalid data stored within the EEPROM chip on the control board. Unlike some temporary faults, a checksum mismatch persists across power cycles because the underlying memory data does not change when power is restored. If the error returns immediately after resetting, ERC replacement is necessary.
Is it safe to use my Dacor range while F6 is displayed?
The range itself limits operation to only the clock and timer when F6 is active, so cooking functions are already disabled as a precaution. You cannot use the oven or surface elements in this state. There is no immediate fire or shock hazard from the error code itself, but the appliance should not be used for cooking until the ERC is replaced and normal operation is restored.
How do I fix the F6 error on a Dacor range?
The corrective action for F6 is replacement of the ERC, which is the main electronic control board. The EEPROM chip responsible for the checksum failure is integrated directly onto the board and cannot be replaced separately in the field. A qualified technician should source the correct ERC for your specific Dacor model and perform the replacement, which also requires reprogramming or verifying control settings after installation.
How much does it cost to fix a Dacor range showing F6?
Repair costs vary depending on the specific Dacor model and your location, but you can generally expect to pay for the ERC part itself plus labor. ERC assemblies for Dacor ranges typically range from around $150 to $400 or more for the part alone, with professional labor adding another $75 to $150 depending on your market. Getting a quote from an authorized service provider before committing to the repair is advisable, particularly on older units where total repair cost may approach replacement value.

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