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Sub-Zero & Wolf·Oven/Rangehigh severity
Sub-Zero & Wolf Error Code F3
Open temperature sensor circuit
Common Causes
- 1Temperature sensor open circuit
- 2Wiring harness break
- 3Connector corrosion
Step-by-Step Troubleshooting
- 1
Unplug the RTD sensor connector at the control board and measure resistance — should read approximately 1100 ohms at room temperature
- 2
If sensor reads open (infinite resistance), check the sensor probe itself by disconnecting at the oven cavity
- 3
Inspect the wiring harness from sensor to board — Wolf high-temperature wire insulation can crack near the oven cavity
- 4
Check connector pins for heat discoloration or corrosion — clean with contact cleaner if accessible
Pro Diagnostic Tip
Wolf RTD sensors use platinum elements. Measure at the board connector — if open there but sensor tests OK at the cavity, the harness has a break. Most common failure point is where wiring enters the oven cavity.
You Might Also Notice
- •Oven will not heat at all
- •Temperature display shows error
- •Oven shuts off immediately after starting
- •F3 appears on every heating attempt
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$250–$500
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
WLF-810440 RTD Temperature Sensor Probe808646 Sensor Wiring Harness
Do You Have the Right Tools?
Combustion analyzer ($300), igniter tester ($120), temperature calibrator ($150), and gas pressure manometer. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Gas ovens involve live gas lines — a loose connection creates explosion and carbon monoxide risk. Electric ovens run on 240V circuits. Our techs are licensed and insured — let them handle the risk.
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Get Professional Help Now
Error code F3 is a high-severity issue that can cause further damage to your oven/range if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Sub-Zero & Wolf error code F3 mean?
Sub-Zero & Wolf error code F3 indicates: Open temperature sensor circuit. This is a high-severity issue affecting your oven/range.
How do I fix Sub-Zero & Wolf error code F3?
Unplug the RTD sensor connector at the control board and measure resistance — should read approximately 1100 ohms at room temperature Then, If sensor reads open (infinite resistance), check the sensor probe itself by disconnecting at the oven cavity Then, Inspect the wiring harness from sensor to board — Wolf high-temperature wire insulation can crack near the oven cavity There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my oven/range has error F3?
Besides the error code on the display, common signs include: Oven will not heat at all; Temperature display shows error; Oven shuts off immediately after starting. If you notice any of these symptoms, check your oven/range's display panel for error code F3.
How much does it cost to fix Sub-Zero & Wolf F3?
Repair costs for Sub-Zero & Wolf F3 typically range from $250 to $500 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.