Zephyr wall, island and under-cabinet range hoods (ICON Touch, internal 600 CFM class): quick sheet

Covers: Zephyr ducted hoods with ICON Touch or button controls and internal blowers, e.g. Luce, Roma, Anzio and Ravenna families (5-speed 600 CFM class) and higher-output Spire-type 1,200 CFM models. Controls and reset steps differ by model; always confirm in the model's manual.

Single sourceBrands: Zephyr7 components

Zephyr hoods are common in mid-range remodels. Most service calls are not failures: a flashing filter light, a Clean Air cycle that turns the hood on by itself, or a delay-off that keeps the fan running. Real failures follow the usual hood pattern: no display (power / control board), lights OK but no fan (blower plug, motor, capacitor), and weak draw (duct problems).

Safety first

Breaker off before removing filters or covers.
Live voltage checks are caution steps.
Discharge any capacitor before testing.
Gloves for sharp sheet metal.

How it works

A touch control panel talks to a power / command board that switches the blower speeds and LED lights. Zephyr's first fix for a blank or frozen panel is a 5-10 minute breaker reset.

A filter reminder counts fan hours (about 30 h on many models) and flashes an 'F' or arrow until reset; the reset method varies (hold a fan button about 3 s on some, hold FAN- with power off on others).

Some models have a Clean Air feature that runs the hood 10 minutes every 4 hours (shown as a flashing 'A' then '1'), and a delay-off that runs the fan for a set time after cooking.

Airflow Control Technology (ACT) lets the installer cap maximum CFM (for example to 290 or 390 CFM on 600 CFM models) to meet local makeup-air rules; a capped hood will feel weak on high.

Components & tests

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Official manufacturer documentation

Always confirm values against the tech sheet for the exact model.

Zephyr site (support and manuals)

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work. © 2026 OnCall Tech. Original content; not a reproduction of any manufacturer document.Generic part photos (not of this brand): Chimney-style range hood with a glass canopy over a cooktop by Bilguun Gantumur, Pexels License

Diagnostic guides for this appliance

Guide · Range Hood

Range hood fan runs only on high, runs slow, or a speed is missing

On simple switch hoods, a missing speed is usually the switch or a failed winding tap; on board-controlled hoods it can be a relay on the control. A fan that is slow on every speed points to grease-dragged bearings, a weak run capacitor on PSC motors, or airflow restriction. Check mechanical drag and airflow before electrical parts.

8 steps ~45 minmoderate

Guide · Range Hood

Cold air, odors or insects coming in through the range hood when it's off

Two dampers should block the duct when the fan is off: one at the hood and one in the wall or roof cap. Grease, bends, missing springs or screws in the path keep them open. Long duct runs and a house under negative pressure make it worse. Fix the dampers first; make-up air questions go to code and an HVAC or licensed contractor.

7 steps ~60 minmoderate

Guide · Range Hood

Range hood grease filters: cleaning baffle and mesh filters (and when to replace)

Loaded grease filters cut airflow and can make the motor overheat. Identify the filter type, clean stainless baffles and mesh with hot water and a degreasing soak or the dishwasher where the maker allows it, never put charcoal filters in water, and reset the hood's filter reminder.

7 steps ~30 mineasy

Other range hoods manuals

Manual · Range Hood

Broan-NuTone under-cabinet range hoods (40000 / 41000 / 42000 / BCSQ Glacier): field service manual

Broan and NuTone 30-42 in under-cabinet hoods: 40000 series (3-1/4 x 10 in ducted), 41000 series (non-ducted, charcoal), 42000 series (7 in round ducted) and convertible BCSQ/Glacier types with LED lighting. Many are discontinued but still installed everywhere.

8 components5 common failuresBroan, NuTone

Manual · Range Hood

Broan PM-series power pack hood inserts (PM250 / PM390 / PM400): field service manual

Broan PM250, PM390/PM390SSP and PM400SS/PM400SSV power pack inserts used inside custom wood or plaster hoods. PM390 is discontinued and was replaced by the PM400SS per one retailer.

6 components5 common failuresBroan

Manual · Range Hood

Vent-A-Hood Magic Lung blower system: field service manual

Vent-A-Hood hoods and liners with Magic Lung centrifugal blowers (B100 single, B200 dual, T200/T400 island and multi-blower setups), plus notes on Power Lung low-profile and M-Line baffle models.

6 components5 common failuresVent-A-Hood