Wolf POWER SUPPLY FAULT Error Code

Error Code Explained

What Does the Wolf POWER SUPPLY FAULT Error Code Mean?

A Wolf professional rangetop control power supply failure cuts power to the electronic control board and all controlled components — spark module, gas valve solenoids, and status indicators lose power simultaneously. This manifests as a completely dead control system with no response to any inputs and no ignition.

Root Causes

Common Causes of the Wolf POWER SUPPLY FAULT Error Code

1

Failed Internal Power Supply or Transformer

The internal power supply module or step-down transformer on the control board has failed, providing no regulated DC power to the control circuits.
2

Blown Internal Protection Fuse

An internal protection fuse in the rangetop power circuit has blown due to an overcurrent event, cutting power to all controls.
3

Open Line Voltage Supply Wiring

The 120V supply wiring from the junction box to the rangetop power input has an open circuit or loose terminal.

Step-by-Step Guide

How to Troubleshoot the POWER SUPPLY FAULT Error Code

⚠️

Safety First: Always disconnect the Rangetop from power before inspecting any internal components. Do not attempt electrical repairs. If in doubt, call a certified technician.

1

Verify Circuit Breaker Status

Confirm the rangetop circuit breaker is on and has not tripped. A tripped breaker removes all power from the rangetop.
2

Confirm 120V Outlet Power

Verify the 120V outlet supplying the rangetop is live using a plug-in tester or lamp.

Professional Service

When to Call a Wolf Technician

⚠ Stop DIY if any of these apply

Confirmed power supply failure requires professional internal fuse inspection and power supply or control board replacement.

Estimated Repair Cost

$130 – $320

Exact quote before any work begins. No surprises.

📞 844-405-6853

FAQ

Frequently Asked Questions — Wolf POWER SUPPLY FAULT

First confirm the circuit breaker for the rangetop is on. Then confirm the 120V outlet providing power to the rangetop is live. If both checks confirm power but the rangetop is completely unresponsive, the internal power supply or protection fuse has failed and requires professional service.

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