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Error code reference

Bosch Washer Error Code F:44

Test of relay for changing direction of drum motor failed

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What the F:44 error code actually means

Your Bosch washer detected a problem with the electronic component that controls which direction the drum spins. This component has failed internally and is preventing the washer from operating normally. A repair technician will need to inspect and most likely replace the main control board to fix this issue.

Diagnostic procedure

The full F:44 procedure

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1
First diagnostic step
Reset error by activating test mode, check control.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of F:44

Ranked by how often they cause this code
  1. 1Failed control triac on the main control board
  2. 2Damaged main control board (beyond the triac alone)
  3. 3Wiring harness fault between control board and drum motor
  4. 4Corrupted control module memory or firmware issue

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Questions people ask about F:44

What does F:44 mean on a Bosch washer?
F:44 indicates that the washer's self-diagnostic test detected a failure in the relay circuit responsible for reversing the drum motor's direction. The specific component identified is the control triac on the main control board. This is stored as a remanent error, meaning it persists in memory until it is actively cleared through test mode. If the error returns after reset, the control board requires service or replacement.
Will resetting the washer clear the F:44 error code?
A standard power cycle will not clear this error because F:44 is classified as a remanent error stored in the control board's memory. It must be cleared by entering the washer's test mode and performing a proper reset. If the underlying triac failure is still present, the code will return after the reset is performed.
How much does it cost to repair the F:44 error on a Bosch washer?
Repair costs vary depending on whether wiring or the full control board needs to be replaced. A wiring harness inspection and connector repair is generally the lower-cost scenario, potentially in the range of $75 to $150 for a service call. Main control board replacement, which is the more common fix for this fault, typically runs between $200 and $450 including parts and labor, depending on the specific model and local service rates.
Can I fix the F:44 error myself, or do I need a technician?
The first step, resetting the error through the washer's test mode, can be attempted without special tools. However, if the fault returns after reset, the repair involves diagnosing or replacing the main control board, which requires comfort working with electronics and disassembling the washer cabinet. Most homeowners will benefit from having a qualified appliance technician handle this repair.
Is it safe to use my Bosch washer when F:44 is displayed?
It is not recommended to continue running the washer while this error is active. A failed triac in the motor direction circuit means the drum may not rotate correctly or at all, which can result in unbalanced loads, incomplete cycles, or further stress on the motor and control board. The washer should be taken out of service until the fault is diagnosed and repaired.

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