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Error code reference

Wolf Oven Error Code RM LOV fuse error

Relay Module low voltage fuse has failed (Priority 1

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What the RM LOV fuse error error code actually means

Your Wolf oven has detected a problem with an internal safety component inside its control relay unit, and the oven has shut itself down to prevent a potential hazard. This is considered a serious fault that requires professional attention before the oven can be used again. Do not attempt to bypass or reset the oven and continue cooking until the underlying problem has been diagnosed and repaired.

Diagnostic procedure

The full RM LOV fuse error procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check connections, replace Relay Module of the oven indicated.
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 RM LOV fuse error

Ranked by how often they cause this code
  1. 1Failed Relay Module (internal fuse open)
  2. 2Loose or corroded wiring connections at the Relay Module
  3. 3Short circuit in the low voltage wiring harness
  4. 4Electrical surge or power event

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Questions people ask about RM LOV fuse error

What does RM LOV fuse error mean on a Wolf oven?
The RM LOV fuse error means the low voltage fuse inside the oven's Relay Module has failed. The Relay Module controls critical low voltage functions in the oven, and this fuse failure is classified as a Priority 1 safety-critical fault. The oven will not operate normally until the Relay Module is inspected and replaced if necessary. This error requires prompt attention from a qualified technician.
Is it safe to use my Wolf oven while the RM LOV fuse error is active?
No, the oven should not be used while this error is active. Wolf classifies the RM LOV fuse error as a Priority 1 safety-critical fault, meaning the oven has identified a condition serious enough to require a shutdown. Attempting to operate the oven in this state could pose a safety risk, and the oven's control system is designed to prevent normal operation until the fault is corrected.
How much does it cost to repair the RM LOV fuse error on a Wolf oven?
Repair costs vary depending on labor rates in your area and parts pricing at the time of service, but you can generally expect to pay in the range of $200 to $600 or more for a Relay Module replacement including parts and labor. Wolf ovens are premium appliances and their components tend to be priced accordingly. Getting a diagnostic estimate from an authorized Wolf service technician before authorizing the repair is advisable.
Can I fix the RM LOV fuse error myself on a Wolf oven?
The first step you can safely take is checking that all wiring connections to the Relay Module are secure and free of visible damage or corrosion. However, because the fuse is internal to the Relay Module and cannot be replaced separately, resolving the fault typically requires replacing the entire Relay Module. Given the safety-critical Priority 1 classification of this fault, it is strongly recommended to have a qualified appliance technician perform the repair.
Will resetting my Wolf oven clear the RM LOV fuse error?
A simple reset or power cycle will not clear the RM LOV fuse error because the underlying cause is a physical hardware failure within the Relay Module. The error will return as long as the failed module remains in place. The fault must be resolved by inspecting and, in most cases, replacing the Relay Module before the oven will operate normally again.

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