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Wolf Range Hood Error Codes
Lookup & Diagnostics

All known error codes for Wolf range hoods — what each code means, self-check steps, and when to call an experienced technician.

97 Error codes
93 Service areas
139 Models covered

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Wolf range hood error codes.

0021
Upper bake relay shorted on a Wolf M-Series wall oven.
Oven →
01
Door-lock malfunction on a Wolf range — the oven lock was not sensed in time.
Range →
02
Over-temperature shutdown on a Wolf range oven — the cavity ran too hot.
Range →
03
Open RTD oven sensor on a Wolf range — the temperature sensor circuit is open.
Range →
04
Shorted RTD oven sensor on a Wolf range — near-zero sensor resistance.
Range →
0821
Motorized door-lock (MDL) relay shorted on a Wolf M-Series wall oven.
Oven →
0E
Power relay shorted or stuck on a Wolf range oven control.
Range →
22
Stuck key on a Wolf CE electric radiant cooktop.
Cooktop →
3
Liquid or cookware on the controls of a Wolf CI induction cooktop.
Cooktop →
3031
Food probe shorted on a Wolf M-Series wall oven (on-screen "Probe Shorted").
Oven →
3121
Oven RTD sensor shorted on a Wolf M-Series wall oven.
Oven →
3221
Oven RTD sensor open on a Wolf M-Series wall oven.
Oven →
39
Controller options problem on a Wolf CE electric radiant cooktop.
Cooktop →
4421
Cooling fan not detected on a Wolf M-Series wall oven.
Oven →
4531
Convection fan not detected on a Wolf M-Series wall oven.
Oven →
47
LIN communication problem on a Wolf CE electric radiant cooktop.
Cooktop →
5021
Over-temperature during self-clean (>950°F) on a Wolf M-Series wall oven.
Oven →
8010
Display failure on a Wolf M-Series wall oven touchscreen.
Oven →
9010
Touch-sensor failure on a Wolf M-Series wall oven ("Touch Pad Sensor failure").
Oven →
Blower Won’t Run
A Wolf range hood blower will not run on any speed.
Range Hood →
Blown Monitor Fuse
A Wolf microwave is dead from a blown monitor fuse — a door-interlock safety issue.
Microwave →
Brownout
Brownout / low-voltage error on a Wolf E-Series wall oven.
Oven →
Burner Won’t Ignite
A Wolf SRT rangetop burner clicks or does nothing but will not light.
Range Top →
COMM ERR
Communication lost with the oven controller on a Wolf range.
Range →
Communications Error
UIM/RM communication failure between boards on a Wolf E-Series wall oven.
Oven →
Continuous Clicking
A Wolf gas range keeps clicking, sometimes on every burner, even after lighting.
Range →
Continuous Clicking
A Wolf SRT rangetop keeps clicking — often all burners at once.
Range Top →
Convection Fan Failure
The convection fan on a Wolf range oven is silent, noisy, or not circulating heat.
Range →
COOL FAN
Cooling-fan failure on a Wolf range — the control electronics may overheat.
Range →
Door Won’t Unlock
A Wolf wall oven door stays locked after a self-clean cycle.
Oven →
Downdraft Won’t Raise
A Wolf downdraft (DD) ventilation unit will not raise or lower.
Range Hood →
Drawer Won’t Close
A Wolf microwave drawer (MD) will not close or seal fully.
Microwave →
Drawer Won’t Open
A Wolf microwave drawer (MD) will not open when the button is pressed.
Microwave →
E01
Ambient temperature too high on a legacy Wolf CT electric cooktop.
Cooktop →
E02
Heatsink temperature high on a legacy Wolf CT electric cooktop.
Cooktop →
E05
Open ambient thermistor on a legacy Wolf CT electric cooktop.
Cooktop →
E07
Model/configuration value changed on a legacy Wolf CT electric cooktop.
Cooktop →
E08
Keyboard communication problem on a legacy Wolf CT electric cooktop.
Cooktop →
E09
PT temperature-sensor short on a Wolf CSO convection steam oven.
Oven →
E09
Keyboard communication problem on a legacy Wolf CT electric cooktop.
Cooktop →
E1
Ambient temperature too high on a legacy Wolf CT induction cooktop.
Cooktop →
E10
Generator communication problem on a legacy Wolf CT induction cooktop.
Cooktop →
E17 / F1
Food-probe short on a Wolf CSO convection steam oven (shown as E17/F1).
Oven →
E18
Food-probe resistance too high on a Wolf CSO convection steam oven.
Oven →
E18
Power-board failure on a legacy Wolf CT electric cooktop.
Cooktop →
E22
Stuck key on a Wolf CI induction cooktop touch control.
Cooktop →
E29 / F9
Steam chamber not sealed on a Wolf CSO convection steam oven (E29/F9).
Oven →
E3
Heatsink temperature high on a legacy Wolf CT induction cooktop.
Cooktop →
E31
Burner ON-LED failure on a legacy Wolf CT induction cooktop.
Cooktop →
E4
Configuration implausible on a Wolf CI induction cooktop.
Cooktop →
E4
Heatsink temperature high on a legacy Wolf CT induction cooktop.
Cooktop →
E41
Temperature sensor shorted on a legacy Wolf CT induction cooktop.
Cooktop →
E43
Induction generator failure on a legacy Wolf CT induction cooktop.
Cooktop →
E47
LIN communication problem on a Wolf CI induction cooktop.
Cooktop →
E5
Relay failure on a Wolf CE electric radiant cooktop.
Cooktop →
E53
Shorted thermistor on a legacy Wolf CT induction cooktop.
Cooktop →
E6
Power-supply problem, or no/wrong pan, on a Wolf CI induction cooktop.
Cooktop →
E6
Power-supply problem on a Wolf CE electric radiant cooktop.
Cooktop →
E8
Cooling-fan error on a Wolf CI induction cooktop.
Cooktop →
E8
Cooling-fan error on a Wolf CE electric radiant cooktop.
Cooktop →
E8
Generator communication problem on a legacy Wolf CT induction cooktop.
Cooktop →
E9
Generator communication problem on a legacy Wolf CT induction cooktop.
Cooktop →
EA
Controller problem on a Wolf CI induction cooktop.
Cooktop →
EA
Controller problem on a Wolf CE electric radiant cooktop.
Cooktop →
F1
Door-lock failure on a Wolf E-Series wall oven — common after a self-clean.
Oven →
F4 / E87
Steam generator / temperature-sensor failure on a Wolf CSO steam oven (F4/E87).
Oven →
Fan Noise
A Wolf range hood is rattling, humming, or noisy when running.
Range Hood →
FC Filter Reminder
FC on a Wolf V-Series range hood is a recirculating-filter reminder, not a problem.
Range Hood →
FG Filter Reminder
FG on a Wolf V-Series range hood is a clean-filters reminder, not a problem.
Range Hood →
FUSES WRONG
Controller configuration incorrect on a Wolf range — the control is mis-set for the model.
Range →
Gas Burner Won’t Ignite
A Wolf gas range surface burner clicks or does nothing but will not light.
Range →
Gas Clicks Won’t Ignite
A Wolf CG gas cooktop burner keeps clicking but will not light.
Cooktop →
Gas Smell When Off
A Wolf SRT rangetop smells of gas with the burners turned off — a safety issue.
Range Top →
Keypad Error
Keypad / membrane circuit error on a Wolf E-Series wall oven.
Oven →
Knob Stuck
A Wolf SRT rangetop control knob is stiff, stuck, or hard to turn.
Range Top →
Lights Out
The lights on a Wolf range hood do not come on.
Range Hood →
LOWER RELAY
Lower-oven relay feedback failure on a Wolf double range.
Range →
No Bake Element Detect
No bake element detected on a Wolf E-Series wall oven.
Oven →
No Cooling Fan Detect
Cooling fan not detected on a Wolf E-Series wall oven.
Oven →
No Power
A Wolf microwave is dead — no display and no response.
Microwave →
Oven Won’t Heat
A Wolf range oven runs but never gets hot, or heats far below the set point.
Range →
Oven Won’t Heat
A Wolf wall oven powers on but never gets hot or heats far below the set point.
Oven →
Over Temp
Over-temperature shutdown on a Wolf E-Series wall oven.
Oven →
Pan Not Detected
A Wolf induction cooktop zone will not detect the pan and will not heat.
Cooktop →
PF
Power failure or oven-too-hot-for-mode condition on a Wolf range.
Range →
Relay Open
A heating relay reads open (stuck off) on a Wolf E-Series wall oven.
Oven →
Relay Shorted
A heating relay reads shorted (stuck closed) on a Wolf E-Series wall oven.
Oven →
RTD Open
Open oven temperature sensor on a Wolf E-Series wall oven.
Oven →
RTD Shorted
Shorted oven temperature sensor on a Wolf E-Series wall oven.
Oven →
Single Burner No Spark
One Wolf SRT rangetop burner has no spark while the others ignite.
Range Top →
Temp Probe Short
Meat/temperature probe shorted on a Wolf E-Series wall oven.
Oven →
Touchpad Unresponsive
A Wolf microwave touchpad does not respond to presses.
Microwave →
U400
Over-voltage shutdown on a Wolf CE electric radiant cooktop.
Cooktop →
Weak Flame
A Wolf SRT rangetop burner lights but the flame is weak or simmers poorly.
Range Top →
Weak Suction
A Wolf range hood runs but pulls smoke and steam weakly.
Range Hood →
Won’t Heat
A Wolf microwave runs but does not heat — check Demo/Showroom mode first.
Microwave →
Won’t Self-Clean
A Wolf wall oven will not start or finish a self-clean cycle.
Oven →
Wolf range hood diagnostics: symptoms, FG/FC reminders

Why a Wolf range hood has no fault codes

A Wolf range hood — Pro Wall (PW/PWC), Pro Island (PI), V-Series wall, island or ceiling (VW/VI/VC), pro liner (PL) or downdraft (DD) — is a blower, a light and a control, so it has no fault-code table and is diagnosed entirely by symptom. The only text the V-Series displays is a filter-clean reminder, not a fault. Reading what the hood is doing — not running, running loud, no suction, no light — is the fastest route to an accurate Wolf range hood repair.

The FG and FC maintenance reminders

On a V-Series hood, FG appears after about 100 hours of use on a vented installation to remind you to clean the grease filters, and FC appears on a recirculating installation to remind you to clean or replace the charcoal filters. After cleaning, holding the DELAY pad resets the reminder and the display shows FF to confirm. These are maintenance prompts, not faults — and note there is no “F6” on a V hood; an apparent F6 is a misread FG.

Common symptoms and what they mean

A blower that will not run can be an unseated motor plug, while a humming motor with worn bearings runs but struggles. Fan noise usually means loose screws, debris or a misaligned blower wheel. Lights and fan both dead point at a fuse, the breaker or the switch. Weak suction is the most common complaint and is most often a clogged grease mesh or baffle filter — the mesh is dishwasher-safe — though a weak motor can also be the cause. A downdraft that will not raise or lower points at the lift mechanism, its motor or the remote. Never run a hood without its filters in place.

What to check, and when to call

Clean or replace the grease and charcoal filters first, reset the FG/FC reminder, and confirm the breaker and switch. If the blower still will not run, hums and struggles, makes a persistent noise, loses suction after cleaning, or a downdraft will not move, an experienced, independent technician should diagnose the motor, bearings, wiring, switch or lift mechanism. Browse the symptom guides on the range hood diagnostics page or the wider error codes library, then book range hood repair. Confirm your model on the manufacturer’s site at subzero-wolf.com.

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