Jenn-Air JJB6424HL Tech Sheet

FOR SERVICE TECHNICIAN’S USE ONLY

WARNING

DANGER

Tech Sheet Do not remove or destroy

W11330682B

Electrical Shock Hazard

Only authorized technicians should perform diagnostic voltage measurements.

After performing voltage measurements, disconnect power before servicing.

Failure to follow these instructions can result in death or electrical shock.

When performing live voltage measurements, you must do the following:

■ Verify the controls are in the off position so that the appliance does not start when energized.

■ Allow enough space to perform the voltage measurements without obstructions.

■ Keep other people a safe distance away from the appliance to prevent potential injury.

■ Always use the proper testing equipment.

■ After voltage measurements, always disconnect power before servicing.

Electrical Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before operating.

Failure to do so can result in death or electrical shock.

Voltage Measurement Safety Information

FOR SERVICE TECHNICIAN’S USE ONLY

IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics

ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress.

■ Use an antistatic wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the

appliance

-OR-

Touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance.

■ Before removing the part from its package, touch the antistatic bag to a green ground connection point or

unpainted metal in the appliance.

■ Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only.

■ When repackaging failed electronic control assembly in antistatic bag, observe above instructions.

TABLE OF CONTENTS

PARTS AND FEATURES .....................................................................................................................................3

SERVICE MODE .................................................................................................................................................5

MEASURING COFFEE TEMPERATURE ............................................................................................................6

TROUBLESHOOTING .........................................................................................................................................7

COMPONENT TESTING CHART ......................................................................................................................12

WATER FLOW DIAGRAM ..................................................................................................................................15

Parts and Features

Rear View Service Door

A. Main On/Off Switch

A. Coffee spout B. Service door C. On/Standby button

Control Panel

FOR SERVICE TECHNICIAN’S USE ONLY

User 2 Size

A. Menu to customize beverages settings B. Appliance settings menu C. Selected strength D. Clock E. Selected size F. Strength selection

Espresso Coee

00:00

Cappuccino Latte

G. Size selection H. Right scroll arrow I. Selectable drinks (press on the scrolling

arrows to see all the drinks) J. Left scroll arrow K. Customizable proﬁles

Strength

macchiato

Service Mode

To Enter Service Mode:

1. With the machine in stand-by (plugged in with the main switch on, but the

machine OFF), open the service door.

2. Press the four corners of the display simultaneously until the Service

Menu appears.

3. The possible options will be displayed.

4. Close the door and choose one of the options by pressing and holding

the relative display area.

Display Function

Load Test Mode Tests all the functional parts by pressing the related

display area.

Reset Encoder Resets the value recorded as the top position for

the Diverter Assembly. If a mechanical or electrical component in the Diverter Assembly is replaced (for example, the transmission kit, switches or the mechanical valve) you will need to reset the encoder. If you change the control board, the machine will reset it automatically.

Test Display Tests all the areas of the display. See chart below for

‘KEY’ areas on display (‘KEY 1’, KEY 2’, etc.). Electric Test Used only by production for nal tests. Energy Saving Energy saving functionality activation will reduce the

temperature for the coffee and steam heaters in standby

mode reducing consumption when machine is ON

but not used. When delivering a beverage, there is no

difference. This setting can also be changed by the user

on the user interface.

LOAD

TEST

MODE

RESET

ENCODER

ENERGY SAVING

TEST

DISPLAY

ELECTRIC

TEST

MODE

KEY 1 KEY 0

KEY 2

KEY 4 KEY 5 KEY 6 KEY 7 KEY 8 KEY 9

KEY 12

KEY 11

FOR SERVICE TECHNICIAN’S USE ONLY

To Enter Load Test Mode:

Once LOAD TEST MODE is selected, it is possible to test the following functional parts by pressing on the related display area.

Display Function

Motor Up

Motor Down

Fan Activates the cooling fan Scenario Light Activates the external light Grinder Activates the grinder Pump Activates the pump Steamer Activates the steamer

Heater

Cup Light Activates the lights above the cup position EV1 + EV3 Activates the two EV1 and EV3 solenoid valves EV2 Activates the EV2 solenoid valve

To Exit the Service Mode:

To EXIT the service mode, switch the Main On/Off Switch to OFF or unplug the machine.

Moves motor in upper position (once the TOP LIMIT SWITCH is reached, a specic message will appear on the screen)

Moves motor in lower position (once the BOTTOM LIMIT SWITCH is reached, a specic message will appear on the screen)

Activates the heater of the generator (thermo block)

Measuring Coffee Temperature

1. Turn the machine on and run a rinse cycle.

2. Set the temperature to the maximum level. Press and select the option

“Tall Coffee”.

3. Wait for the container to ll with at least 20 mL of coffee.

4. Measure the ow temperature 5-10 mm away from the spout.

5. The indicative temperature must be 187°F (± 3°F).

10 mm

187

Troubleshooting

ESC

DISPLAYED MESSAGE POSSIBLE CAUSE SOLUTION ADD PRE-GROUND COFFEE,

PRE-GROUND MAXIMUM ONE MEASURING CUP

EMPTY GROUND CONTAINER The grounds container is full. Empty the grounds container and drip tray, clean and

DESCALING NEEDED, PRESS OK TO START (~45 MIN)

FILL BEAN CONTAINER The coffee beans have run out. Fill the beans container. FILL WATER TANK WITH FRESH

WATER GENERAL ALARM: REFER TO

USER MANUAL

The “Pre-ground coffee” function has been selected, but without placing any pre-ground coffee in the funnel.

The funnel for pre-ground coffee is clogged. Empty the funnel using the brush provided. A “Tall” coffee with pre-ground coffee has been requested.

Indicates that descaling is needed.

The water tank is empty or incorrectly positioned. Fill the tank with fresh water and or insert it correctly

The inside of the coffee system is very dirty. Clean the inside of the appliance thoroughly. If the message

Place pre-ground coffee in the funnel and repeat delivery.

Place pre-ground coffee in the funnel and press continue and complete delivery.

replace them. IMPORTANT: When removing the drip tray, the grounds

container must always be emptied, even if it contains a few grounds. If this is not done, when you make the next coffees, the grounds container may ll up more than expected and clog the machine.

Press later. The descaling procedure described in the “Descaling” section needs to be performed.

pushing it as far as it will go until it clicks into place.

is still displayed after cleaning, contact an authorized Customer Service Center.

to start descaling or press

to descale

FOR SERVICE TECHNICIAN’S USE ONLY

ESC

DISPLAYED MESSAGE POSSIBLE CAUSE SOLUTION SELECT A MILDER TASTE OR

REDUCE PRE-GROUND COFFEE QUANTITY

Too much coffee has been used.

Select a milder taste by pressing or reduce the quantity of pre-ground coffee (maximum one measure).

GROUND TOO FINE. ADJUST GRIND LEVEL 1 CLICK WHILE IN OPERATION

INSERT BREWING UNIT

INSERT MILK CONTAINER The milk container is not inserted correctly. Insert the milk container as far as it will go. INSERT GROUND CONTAINER

AND DRIP TRAY INSERT WATER OUTLET The hot water spout is not inserted or is inserted

WATER CIRCUIT EMPTY PRESS OK TO START FILLING PROCESS

PRESS OK TO START CLEANING PROCESS OR TURN MILK FROTH ADJUSTMENT KNOB

The grinding is too ne and the coffee is delivered too slowly or not at all.

If the water lter is present, an air bubble may have been released inside the circuit, obstructing delivery.

After cleaning, the infuser has not been replaced. Insert the infuser.

After cleaning, the grounds container has not been replaced.

incorrectly. The water circuit is empty.

The milk container has been inserted with the froth adjustment dial in the CLEAN position.

Repeat coffee delivery and turn the grinding adjustment dial one click clockwise towards number seven while the coffee mill is in operation. If after making at least two coffees delivery is still too slow, repeat the correction procedure, turning the grinding adjustment dial another click. If the problem persists, make sure the water tank is fully inserted.

Insert the hot water/steam spout in the appliance and deliver a little fresh water until the ow becomes regular.

Remove the drip tray and insert the grounds container.

Insert the water spout as far as it will go.

Press the ow will stop itself automatically. If the problem persists, make sure the water tank is fully inserted.

To proceed with the CLEAN function, press the froth adjustment dial to one of the milk positions.

and allow fresh water to drain out of the spout;

or turn

DISPLAYED MESSAGE POSSIBLE CAUSE SOLUTION TURN THE MILK FROTH

ADJUSTMENT KNOB TO START CLEANING

TURN THE MILK FROTH ADJUSTMENT KNOB TO MILK POSITION

Milk has been delivered recently and the tube inside the milk container must be cleaned.

The milk container has been inserted with the froth adjustment dial in the CLEAN position.

Reminder that the appliance needs descaling and/or the lter must be replaced.

NOTE: Water lter not available on this model.

Turn the froth adjustment dial to CLEAN.

Turn the dial to the required froth position.

The descaling procedure needs to be performed as soon as possible.

Reminder that the tubes inside the milk container must be cleaned.

Reminder that the machine must be descaled. The descaling procedure needs to be performed as soon as

Indicated that the auto-start function is enabled. Disable the auto-start function from the user SETTINGS

Energy saving is enabled. Disable the energy saving mode from the user SETTINGS

Turn the froth adjustment dial to CLEAN.

possible.

menu.

FOR SERVICE TECHNICIAN’S USE ONLY

PROBLEMS POSSIBLE CAUSE SOLUTION

The coffee is not hot The cups have not been preheated. Enable the cup warmer from the user SETTINGS menu.

Place the cups on the heatable coffee cup tray. OR Rinse the cups with hot water.

The coffee is too weak or not creamy enough

The coffee is delivered a drop a time or too slowly

The coffee is only coming out of one of the holes in the coffee spouts or is not coming out at all

The milk contains large bubbles and squirts out of the milk spout or there is little froth

The infuser has cooled down because over 3minutes have elapsed since the last drink was made.

A low temperature is set. Set a hotter coffee temperature. The coffee is ground too coarsely. Turn the grinding adjustment dial one click counterclockwise

The blend of coffee is unsuitable. Use a blend of coffee specically for espresso coffee

The coffee is ground too nely. Turn the grinding adjustment dial one click clockwise towards

The holes in the coffee spouts are clogged. Clean the holes in the coffee spouts.

The milk is not cold enough or is not semi-skimmed or skimmed.

The froth adjustment dial is incorrectly adjusted. Turn the adjusting dial to the left or right until set to the

The milk container lid or froth adjustment dial is dirty. Clean the lid and adjusting dial of the milk frother. The hot water/steam connection nozzle is dirty. Clean the connection nozzle.

Before making coffee, heat the infuser by selecting the Rinse function from the menu. The infuser gets hot during rinsing.

towards number one while the coffee mill is in operation. Continue one click at a time until coffee delivery is satisfactory. The effect can only be noticed after delivering two coffees.

machines.

number seven while the coffee mill is in operation. Continue one click at a time until coffee delivery is satisfactory. The effect can only be noticed after delivering two coffees.

Use fully skimmed or semi-skimmed milk at refrigerator temperature 5°C (41°F). If results are still not satisfactory, try changing brand of milk.

recommended position.

PROBLEMS POSSIBLE CAUSE SOLUTION

The milk does not come out from the milk spout

The appliance does not come on The power cord is not plugged in to the electrical

The infuser cannot be extracted The appliance has not been switched OFF correctly.

The appliance requires a third rinse cycle at the end of descaling

The appliance emits noises or small puffs or steam while not in use

The lid of the milk frother is dirty. Clean the lid of the milk frother. The milk tube has not or not correctly been inserted. Insert the milk tube in the milk frother lid.

outlet. Power to the appliance is disconnected.

The main ON/OFF switch is not turned ON.

The water tank was not lled to the MAX level. Empty the drip tray.

The appliance is ready for use or has been recently switched OFF.

Condensate is dripping into the vaporizer.

Plug in appliance or connect power.

Turn the appliance off by pressing the button.

Follow the instructions displayed by the appliance and perform a third rinse cycle.

This is normal. To limit this, empty the drip tray.

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