KOBE CH-178 Troubleshooting guide

KOBE Brand Range Hood
CH-178 Model
INSTALLATION INSTRUCTIONS
AND OPERATION MANUAL
- READ AND SAVE THESE INSTRUCTIONS -
- READ ALL INSTRUCTIONS CAREFULLY BEFORE STARTING -
ALL WIRING MUST BE DONE BY A PROFESSIONAL AND IN
ACCORDANCE WITH NATIONAL AND LOCAL ELECTRICAL CODES.

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- PLEASE READ THIS SECTION CAREFULLY BEFORE INSTALLATION -
WARNING – TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR PERSONAL INJURY,
OBSERVE THE FOLLOWING:
1) Installation work and electrical wiring must be done by qualified professionals and in
accordance with all applicable codes and standards, including fire-rated construction.
2) When cutting or drilling into wall or ceiling, be careful not to damage electrical wiring or
other hidden utilities.
3) Ducted fans must always be vented to the outside.
a) Before servicing or cleaning unit, open the light panel and SWITCH POWER OFF AT
SERVICE PANEL.
b) Clean fan, optional filter and grease laden surfaces frequently. To reduce the risk of fire
and to properly disperse air, make sure to vent air outside. DO NOT vent exhaust air
into wall spaces, attics, crawl spaces or garages.
NOTE - This warranty is invalid without an authorized
agent’s receipt or if unit is damaged due to misuse,
poor installation, improper use, mistreatment,
negligence or any other circumstances beyond the
control of KOBE RANGE HOODS authorized
agents. Any repair carried out without the
supervision of KOBE RANGE HOODS authorized
agents will automatically void the warranty.
- KOBE RANGE HOODS will not be held responsible
for any damages to personal property or real estate
or any bodily injuries, whether caused directly or
indirectly by the range hood.
CAUTION – FOR GENERAL VENTILATION USE ONLY. DO NOT USE TO EXHAUST
HAZARDOUS OR EXPLOSIVE MATERIALS AND VAPORS. TO REDUCE THE RISK OF FIRE,
USE ONLY METAL DUCTWORK. SUFFICIENT AIR IS NEEDED FOR PROPER COMBUSTION
AND EXHAUSTING OF GASES THROUGH THE FLUE (CHIMNEY) OF FUEL BURNING
EQUIPMENT TO PREVENT BACK DRAFTING. FOLLOW THE BEATING EQUIPMENT
MANUFACTURER’S GUIDELINE AND SAFETY STANDARDS SUCH AS THOSE PUBLISHED BY
THE NATIONAL FIRE PROTECTION ASSOCIATION (NFPA), AND THE AMERICAN SOCIETY
FOR HEATING, REFRIGERATION AND AIR CONDITIONING ENGINEERS (ASHRAE), AND
CODE AUTHORITIES.

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-IMPORTANT SAFETY INSTRUCTIONS-
WARNING – TO REDUCE THE RISK OF PERSONAL INJURY IN THE EVENT OF A
RANGE TOP GREASE FIRE:
 Keep fan, optional filter and grease-laden surfaces clean.
 Always turn hood ON when cooking at high heat.
 Use high settings on cooking range ONLY when necessary. Heat oil slowly on low to
medium setting.
 Don’t leave cooking range unattended when cooking.
 Always use cookware and utensils appropriate for the type and amount of food being
prepared.
 Use this unit only in the manner intended by the manufacturer.
 Before servicing, switch power off at service panel and lock service panel (if possible) to
prevent power from being switched on accidentally and DETACH the fuse (see section
Changing the Fuse).
What to Do In The Event Of ARange Top Grease Fire
1) SMOTHER FLAMES with a close fitting lid, cookie sheet, or metal tray, and then turn off
the burner. KEEP FLAMMABLE OR COMBUSTIBLE MATERIAL AWAY FROM
FLAMES. If the flames do not go out immediately, EVACUATE THE AREA AND CALL
THE FIRE DEPARTMENT or 911.
2) NEVER PICK UPABURNING PAN – You may get burned.
3) DO NOT USE WATER, including wet dishcloths or towels – a violent steam blast will result.
4) Use an extinguisher ONLY if:
a) You know you have a Class ABC extinguisher and you already know how to operate it.
b) The fire is small and contained in the area where it started.
c) The fire department has been called.
d) You can fight the fire with your back to an exit.
What to Do If You Smell Gas
- Extinguish any open flame.
- Do not try to turn on the lights or any type of appliance.
- Open all doors and windows to air out any amount of gas. Call the Gas Company and
Fire Department right away.
CAUTION Turning on any switch may cause ignition or an explosion.

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- CONTENTS OF RANGE HOOD PACKAGE -
(Must keep all materials for returns or refunds)
1) KOBE range hood
2) Plastic packet of small parts containing:
a) Two safety screen
b) Two rectangle & 2 round oil cups
c) Halogen Lights 12V20W(CH-178 Models only)
d) Plastic exhaust duct outlet ring for 6" or 7" Opening
e) Installation Manual & Warranty Card
3) Patented installation template guide (screw position & vent outline)
4) Packaging materials may include:
a) Plastic bag to cover hood
b) Styrofoam
c) Outer carton
Unpack hood and check contents; remove template, & plastic packet of small parts.
- PREPARING THE INSTALLATION LOCATION -
----SAFETY WARNING----
INTERIOR OF HOOD MAY HAVE VERY SHARP EDGES, PLEASE
WEAR PROTECTIVE GLOVES IF YOU HAVE TO OPEN THE
HOOD FOR CLEANING OR SERVICING.
NOTE: TO AVOID DAMAGE TO YOUR HOOD,
PREVENT DEBRIS FROM ENTERING THE
VENT OPENING.
Make sure the surface of the wall is clean and free of debris.
Providing Electrical Power Line Access (SHOULD BE DONE BYALICENSED
PROFESSIONAL)
1. If there is no electrical power line access opening, you will need to make an opening first
before you can proceed further. To make an electrical power access opening, mark an outline
for the opening on the cabinet bottom. Use a 1-1/4” wood bit to form the access opening.
(Fig. 1) CAUTION: Be careful when operating the electric drill.
(Electrical power access)
(Fig. 1)

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----SAFETY WARNING----
IF DRILLING INTO THE WALLS, BE CAREFUL NOT TO CUT
EXISTING ELECTRICAL CABLES, WHICH WOULD CREATE A
HAZARD. ALL ELECTRICAL CONNECTIONS MUST BE IN
ACCORDANCE WITH LOCAL CODES, ORDINANCES, OR
NATIONAL ELECTRICAL CODE. IF YOU ARE UNFAMILIAR
WITH METHODS OF INSTALLING ELECTRICAL WIRING,
SECURE THE SERVICES OF A QUALIFIED ELECTRICIAN.
CAUTION: TO REDUCE THE RISK OF FIRE AND ELECTRIC SHOCK, DO NOT USE
WITH ANY SOLID-STATE SPEED CONTROL DEVICE.
(Fig. 1a) (Fig. 1b) (Fig. 1c)
(Fig. 1d) (Fig. 1e)
- INSTALLING THE RANGE HOOD -
(Keep all packing materials for return or exchange)
Temporarily wire the hood to test for proper operation before installing.
Before installing, please peel protective film off the hood first, if any.
For Mounting on a Cabinet with a Flush Bottom
1) If you need to move the cooking range to work on the cabinet, turn off the power for an
electric range at the main electrical box. SHUT OFF THE GAS BEFORE MOVING AGAS
RANGE.
2) To make an electrical line access opening, please refer to section Electrical Power Line
Access. Attach the template guide under the cabinet where the hood is to be installed making
sure the arrows on the template is pointing to the wall (Fig 1a). Measurements are provided
on patented installation template guide for those having difficulty using the template to
install on a recessed bottom cabinet.

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3) Screw four 1” wood screws (for mounting the hood) into the exact center of the plastic
anchor marked on the template guide (Fig.1b). Make sure the head of the screw is
comfortably resting against plastic anchor. CAUTION: The plastic anchor is the exact
thicknesses of the top of the hood so do not over-tighten screws.
4)
a) For top venting: (CH-178 Series) cut along the dotted line of the template leaving a
rectangle opening on the bottom of the cabinet. Tear out & dispose of the template. This
rectangle opening is required for 6”, 7” or 3 ¼” X 10” ducts. Remove temporary
plastic vent portion on the top of the hood. Replace with the actual vent cover that came
with the hood. Cut along the indented outline for the size of the duct opening that you
need. (Fig. 2) Fasten plastic vent piece with the raised surface facing outward back onto
the top of the hood. Follow step 4).
7” 6” (Fig. 2) Actual Vent Cover (included)
(Remove) Temporary vent cover
b) For rear venting: (CH-178 Series) unscrew the rectangular plastic vent portion at the
back of the hood. (Fig.4) Turn over the vent piece so that the flat surface is facing you.
Cut along the indented outline until there is a 3 ¼” X 10” opening. Fasten plastic vent
piece with the raised surface facing outward back onto the hood.
(Fig.4) (Fig.5) (Fig.6)
(Rear Venting)
5) Take the hood, place electrical power line through access opening (Fig. 1d), align the 4
mounting slots at the top of the hood to the 4 screws, hook the hood into place & slide toward
wall. The hood should snap backward into place (Fig.1e). CAUTION: MAKE SURE THE
HOOD IS SECURE BEFORE RELEASING.
6) Unfasten the safety screen screw just enough to allow the hooked end of the screen to slide
between the hood & the screw. Place the rectangular side of the safety screen into the open
slot just to the back of the recessed fan, then place the hook end against screw & tighten
screw. Do NOT over-tighten screw.
7) Slide each rectangular oil container into the oil container slots at the back of the safety
screen. (Fig.5)
8) Finally, place a round oil container with the three prongs into the larger holes in the specially
made openings in the center of the screen & turn clockwise until it snaps into place. Do the
same for the other round oil container. (Fig.6)

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For Mounting on a Cabinet with a Recessed Bottom
1) If you need to move the cooking range to work on the cabinet, turn off the power for an
electric range at the main electrical box. SHUT OFF THE GAS BEFORE MOVING AGAS
RANGE.
2) Measure the space (under the cabinet) between the inside front edge and inside back edge
(Fig. 3). With a saber saw, cut two wood filler strips (not included) to fill in the bottom of
the cabinet. Use 2-1/4” long wood screws (not included) to attach wood strips to the cabinet.
For metal cabinet, use 3/8” x 2-1/2” bolts and nuts to secure the strips to the cabinet. The
hood will be mounted on these filler strips. (For a more secure installation, you can also use
screws from inside the cabinet down into the wood filler strips.) Make sure the filler strips
do not cover the electrical power line access opening.
(Fig. 3)
3) Follow installation instructions from the section For Mounting on a Cabinet with a Flush
Bottom.
Installing the CH178 (42”)(48”) Hood
1) A minimum of 2 people should lift the CH 178 (42”) (48”) hood in installing under
cabinet to avoid injury and damage to the hood.
2) Proceed to the instructions from the section “For Mounting on a Cabinet with a flush
Bottom.”
For Venting the CH 178(48”) Hood
1) The CH7848 should be discharge upward to utilize the maximum power of the fan.
2) For vertical discharge, run ductwork between the hood locations to the roof cap.
For best result use a minimum number of transitions and elbows.

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Vertical Ducting on second floor house
Cabinet
Transition
Elbow
Roof Cap
6”RD, 7”RD
3 ¼” x 10” Duct
Transition
6”RD, 7”RD
3 ¼” x 10” Duct
Roof Cap
Elbow
Cabinet
Ceiling
Second floor
Wall

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Making The Electrical Connection (SHOULD BE DONE BYALICENSED PROFESSIONAL)
----SAFETY WARNING----
INTERIOR OF HOOD MAY HAVE VERY SHARP EDGES, PLEASE
WEAR PROTECTIVE GLOVES IF YOU HAVE TO OPEN THE
HOOD FOR CLEANING OR SERVICING.
CAUTION: MAKE SURE ELECTRICAL POWER IS TURNED OFF BEFORE STARTING
THIS SECTION.
1) After turning off the electrical power at the main power source, push the electrical power line
through the access opening drilled earlier in the wall or bottom of the cabinet. There are three
different color wire strands to be connected. Strip solid wire 5/16” and strip stranded wire
3/8”.
2) Connect the power line ground wire to the grounding green lead supplied with the hood.
3) Make the electrical connections by fastening the black power wire to the black wire and the
white power wire to the white wire located in the electrical wiring compartment. Align any
frayed strands or conductors. Screw on conductors; push wires firmly into connectors when
starting. Stop when the bottom of the connector reaches conductor. Follow all codes.
4) Plug into electrical outlet. Turn on power and check operation of fans and light.
Congratulations, your KOBE range hood is ready to be used!
NOTE: The recommended height from range hood
bottom to top of the cooking surface is 30”.

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- OPERATING INSTRUCTIONS -
KOBE range hood motors can be operated independently of one another.
This KOBE range hood model is operated by two 2-speed switches located on the front of the
hood. Each switch controls a separate motor with high and low settings. (Fig. 4) The low
setting will handle most exhaust requirements while the high speed should be used for heavier
cooking.
The light switch is located to the right of the control switches. (Fig. 4) NOTE: Before replacing
light bulb, turn off range hood. See section on Changing the Light Bulb. DO NOT uses more
than 12V 20W halogen light (CH-178 Series).
If your range hood is equipped with the QuietMode™ feature, the LED indicator switch will be
located to the right of the light switch. When the QuietMode™ switch is turned on, the LED
indicator will be lit and both fans will change into QuietMode™ regardless whether one or both
fans were on. When QuietMode™ is switched off; the previous controls will take effect.
Remember to turn off control switches after you are finished.
The QuietMode™ feature offers continuous ventilation at a greatly reduced noise level.
Left Motor Switch Right Motor Switch Lights Quiet Mode (LED) Light
(CH-178 Switch)
(Fig. 4)
- MAINTENANCE OF THE HOOD -
----SAFETY WARNING----
INTERIOR OF HOOD MAY HAVE VERY SHARP EDGES, PLEASE
WEAR PROTECTIVE GLOVES IF YOU HAVE TO OPEN THE
HOOD FOR CLEANING OR SERVICING.

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Cleaning
To clean the hood surface, use only mild soap or detergent solutions. Dry up surfaces using soft
cloth. CAUTION: Never use abrasive cleaners, pads, or cloths.
If the hood looks splotchy (stainless steel hood), use an orange base cleaner to clean the surface
of the hood (make sure the cleaner does not get on any control switches). Spread a light coating
over the surface of the hood and leave on for a few minutes (do not leave on too long or there
might be damage to the hood finish). Use a soft towel to wipe off the cleaning solution, gently
rubbing any stubborn spots. Use a slightly damp towel to get rid of any cleaning solution. Use a
dry soft towel to dry the hood.
To bring the glow back into a stainless steel finish, use a stainless steel cleaner.
To clean range hood fans, turn both motors on high speed and spray a mild degreaser into the
fans. Liquid residue will accumulate in the transparent holders located at the back of the safety
screen. These slide easily in and out for cleaning. The round transparent holders attached to the
fan cover can be unscrewed (turn counterclockwise) for cleaning. (To replace, just screw back in
turning clockwise until it clicks into place.) To clean the fan safety screen, remove the screw
(leave in a safe place), and slide safety screen out. CAUTION: Be careful of hook end of the
safety screen. Both the transparent holders and fan safety screen should be washed with warm
soapy water and completely dried before returning in place. (Both are top rack dishwasher safe.)
CAUTION: Never put your hand into the area housing the fan while the fan is operating.
For the most efficient operation of your range hood, clean the range hood surface, fans and
optional filters regularly.
CAUTION: Drain transparent oil holders before oil can overflow.

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Changing the Light Bulb
CH-178 Series:
1) Make sure all control switches are off and range hood is unplugged. CAUTION: Wait until
halogen light is cool to the touch before changing.
2) Remove the metal support from the bottom of the halogen light. The halogen light should
drop out of the light cavity.
3) Gently unplug the defective halogen light and discard. Plug in new halogen light (MR16
type, 12V20 watts max.) and push gently back into light cavity.
4) Replace metal support with prongs against the light.
5) Plug in range hood.
(Fig. 6a) (Fig. 6b) (Fig. 6c)
(Use screw driver)
12V20W
(Fig. 6d ) (Fig. 6e ) (stamped)

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Changing the Fuse
CH-178 Series:
1) Undo the three screws at the bottom of the range hood. CAUTION: To avoid electric shock,
unplug range hood FIRST. Take off the bottom panel of the hood and place on a flat surface.
WARNING: PLEASE WEAR PROTECTIVE GLOVES AS INTERIOR OF HOOD MAY
HAVE SHARP EDGES.
2) Unscrew the knob that holds the fuse by turning counter-clockwise and gently pulling it out.
Discard defective fuse and replace with new fuse. Place fuse gently back into opening and
turn knob clock-wise.
3) Replace bottom panel, plastic cushion, & screw.
4) Plug in range hood.
(Fig. 8a) (Fig. 8b) (Fig. 8c) (Fig. 8d)
(Fig. 8e)
(Fig. 8f) (Fig. 8g) (Fig. 8h)
8 Amps fuse
Recommended

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Troubleshooting Guide
Problem Solution
Light does not turn on.  Check power is plugged in.
 Check light bulb.
 Check fuse.
One fan is turning faster than the other.  Clean fans.
 Check for loose wires.
Fan is not turning.  Check power is plugged in.
 Check fuse.
 Check electrical wires were connected correctly.
 Check for loose wires.
 Check switch
 Check QuietMode™ connection
QuietMode™ not working.  Check power is plugged in.
 Check fuse.
 Check electrical wires were connected correctly.
 Check for loose wires.
 Check switch
 Check QuietMode™ connection
 Check left/right motor is working.
LED light is off.  Check power is plugged in.
 Check fuse.
 Check electrical wires were connected correctly.
 Check for loose wires.
 Check switch

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- Circuit Diagram -
Model CH -178 (30’’, 36”, 42”)

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-Parts List-
Model CH -178 (30’’ 36’’ 42’’)
1 Casing 22 Wind Box
2 Fuse 23 Exhaust Wind Tunnel Separate
Stand
3 Fuse Housing 24 Oil Tunnel Piece
4 Quiet Mode Switch 25 Line Circle
5 Light Switch 26 Motor Stand
6 Right Control Motor Switch 27 Motor Stand Worn Pin
7 Left Control Motor Switch 28 Motor
8 Input Wire 29 Motor Vibration Seal
9 Wire Hole Rubber 30 Motor Position Screw
10 Hanger 31 Impeller
11 Hanger Screw 32 Impeller Plastic Cover
12 Hanger Ring 33 Oil Tunnel Ring
13 Rubber Stand 34 Oil Tunnel
14 Rubber Position Screw 35 Casing Cover
15 Switch Separate Stand 36 Button Casing Position Screw
16 Transformer 37 Oil Container
17 Quiet Mode PCB Set 38 Impeller Cover
18 Quiet Mode Set Position Screw 39 Impeller Cover Screw
19 Halogen Light Stand 40 Oil Cup for Safety Net
20 Halogen Light 41 Wire Connector
21 Capacitor

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Model CH -178 (30’’ 36’’ 42’’)

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-Parts List-
Model CH -178(48”)
1 Casing 22 Motor Stand Worn Pin
2 Fuse 23 Motor Position Screw
3 Fuse Housing 24 Motor Vibration Seal
4 Quiet Mode Switch 25 Motor
5 Light Switch 26 Impeller
6 Right Control Motor Switch 27 Impeller Cover
7 Left Control Motor Switch 28 Impeller Cover Screw
8 Input Wire 29 Impeller Plastic Cover
9 Wire Hole Rubber 30 Oil Tunnel
10 Hanger 31 Oil Tunnel Ring
11 Hanger Screw 32 Casing Cover
12 Hanger Ring 33 Button Casing Position Screw
13 Wind Box 34 Oil Container
14 Exhaust Wind Tunnel Separate
Stand 35
Rubber Stand
15 Line Circle 36 Rubber Position Screw
16 Oil Tunnel Piece 37 Wire Connector
17 Halogen Light Stand 38 Transformer
18 Halogen Light 39 Quiet Mode PCB Set
19 Halogen Light Support Ring 40 Quiet Mode Set Position Screw
20 Capacitor 41 Oil Cup for Safety Net
21 Motor Stand

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Model CH –178 (48”)

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- Circuit Diagram -
Model CH -178 (48’’)