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Error code reference

Electrolux Oven Error Code EH2O

Water measured inconsistent with valves state (FM)

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What the EH2O error code actually means

Your Electrolux oven detected a problem with its water system during a self-cleaning cycle, specifically that the amount of water being measured does not match what the oven expected based on the valve settings. The oven stopped the cleaning cycle automatically to protect itself. This is usually caused by low water pressure, a closed water supply valve, or a faulty water sensor inside the oven.

Diagnostic procedure

The full EH2O procedure

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1
First diagnostic step
Ensure check valves (anti-back flow valve) are not stuck; check water system/pressure; check flow meter functionality X39 on ACU.
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Most common causes of EH2O

Ranked by how often they cause this code
  1. 1Closed or restricted water supply valve
  2. 2Low household water pressure
  3. 3Stuck or fouled check valve (anti-backflow valve)
  4. 4Flowmeter failure or wiring fault at X39
  5. 5Internal water system fault

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Questions people ask about EH2O

What does EH2O mean on a Electrolux oven?
EH2O indicates that the oven's control unit detected an inconsistency between the water measured by the flowmeter and the expected state of the water supply valve during a cleaning cycle. The oven stops the cycle automatically to prevent damage. The fault points to a water supply issue, a stuck check valve, or a flowmeter problem at the ACU connector X39.
Will resetting the oven clear the EH2O error?
Resetting the oven by cutting power may temporarily clear the fault code, but the EH2O error will return if the underlying cause is not resolved. The oven will stop the cleaning cycle again as soon as the inconsistency between the flowmeter reading and the valve state is detected. Always address the root cause before attempting another self-cleaning cycle.
How much does it cost to repair an EH2O error on an Electrolux oven?
Repair costs depend on the cause. If the fix is as simple as opening a supply valve or clearing a blocked check valve, the cost may be minimal or limited to a service call fee, typically in the range of $75 to $150. Replacing a failed flowmeter or diagnosing a fault at the ACU connector X39 could bring the total cost to somewhere between $150 and $400 or more, depending on parts and labor in your area.
Can I fix the EH2O error myself?
Some causes of EH2O are DIY-friendly. Start by confirming the water supply valve is fully open and checking household water pressure. You can also inspect the check valves for visible blockage or debris. If the issue is a failed flowmeter or a wiring fault at the ACU connector X39, that repair typically requires more advanced diagnostic skills and possibly professional service.
Is it safe to use my oven if it shows an EH2O error?
Standard cooking functions may still operate normally even when EH2O is present, since the fault specifically relates to the water system used during self-cleaning. However, you should not run the self-cleaning cycle until the fault is diagnosed and repaired, as the oven will halt mid-cycle and the underlying water system issue could worsen. Consult a technician if you are unsure about the condition of the water components.

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