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Error code reference

Electrolux Dryer Error Code EH1

Power supply frequency out of range

Electrolux codesElectrolux dryer codes

Power supply frequency out of range — power supply problems, wrong MCF, or main board error.

First step from the service manual

Check power supply frequency and main board.

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

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What EH1 means on a Electrolux dryer

The EH1 error code on an Electrolux dryer indicates that the control system has detected a power supply frequency outside of the acceptable operating range. Electrolux dryers are designed to operate at a specific AC frequency, typically 60 Hz in North America. When the main control board measures an incoming frequency that deviates significantly from this target, it triggers EH1 to protect the motor and control electronics from operating under abnormal electrical conditions.

There are three primary sources for this fault. First, the actual utility power supply entering the home or laundry circuit may be delivering unstable or incorrect frequency, which can occur during grid disturbances or when operating on generator power. Second, an incorrect or mismatched Motor Control Function (MCF) file or configuration may cause the control board to misinterpret a normal frequency signal. Third, the main control board itself may have failed internally, causing it to misread the incoming frequency even when the supply is within spec.

Diagnosis should begin at the power supply. Confirm that the outlet is delivering stable 60 Hz AC power using a true-RMS multimeter or a dedicated power quality meter. If the supply checks out, the focus shifts to the MCF configuration and the main board. A board that is faulty or loaded with an incorrect MCF will require either reprogramming or replacement to resolve the fault.

Source: manufacturer service documentation.

Common causes of EH1

  1. 01

    Unstable or incorrect utility power frequency

    Wiring / connection

    Power delivered from the utility grid or a generator may be operating outside the normal 60 Hz range. Verify incoming frequency at the dryer's outlet using a true-RMS multimeter capable of frequency measurement.

  2. 02

    Incorrect or mismatched MCF configuration

    Part replacement

    The Motor Control Function file programmed into the control system may be incorrect for the specific dryer model or region, causing the board to flag a valid frequency as out of range. This typically requires reprogramming or a replacement board with the correct configuration.

  3. 03

    Faulty main control board

    Part replacement

    The main control board may have failed internally, causing it to misread or fail to process the incoming power frequency correctly even when the supply is normal. A board replacement is required if all other causes are ruled out.

  4. 04

    Generator or temporary power source in use

    Wiring / connection

    Running the dryer on a portable generator or temporary power source often produces frequency fluctuations that fall outside the dryer's acceptable range, triggering EH1. Restoring connection to stable utility power will typically clear the fault.

See the test procedure for each cause

Frequently asked questions about EH1

What does EH1 mean on a Electrolux dryer?
EH1 on an Electrolux dryer means the control board has detected that the incoming power supply frequency is outside the acceptable operating range. This can be caused by a problem with the household power supply, an incorrect MCF configuration on the control board, or a failure of the main control board itself. The dryer will not operate normally until the frequency issue is identified and corrected.
Can I fix EH1 on my Electrolux dryer myself?
Some causes of EH1 can be addressed without professional help. Start by checking whether the dryer is connected to stable utility power and not a generator or power strip. If the power supply tests normal at 60 Hz and the fault persists, the repair moves into control board diagnostics or MCF reprogramming, which typically requires a qualified appliance technician.
Will resetting my Electrolux dryer clear the EH1 error?
A reset may temporarily clear the EH1 code, but if the underlying cause is still present, the error will return. If the fault is due to a temporary power disturbance, unplugging the dryer for a few minutes and restoring power may resolve it. If the issue is a faulty main board or incorrect MCF, a reset alone will not fix the problem.
Is it safe to use my dryer when it shows EH1?
No, you should not attempt to run the dryer while EH1 is active. The code indicates the dryer is detecting an abnormal electrical condition, and operating it under those circumstances could stress or damage the motor and control electronics. Resolve the power supply or control board issue before resuming use.
How much does it cost to repair an EH1 error on an Electrolux dryer?
Repair costs vary depending on the root cause. If the issue is simply an unstable power source, there may be no parts cost at all. If the main control board needs replacement, parts and labor typically range from around 150 to 400 dollars depending on the specific board and local labor rates. Getting a diagnostic visit from a technician before ordering parts is advisable.

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