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Tips and essentials for the restaurant, foodservice and HVAC spaces in one place.

Multiplex Blend-In-Cup Troubleshooting

Line up of different flavored milkshakes - Multiplex Blend-in-Cup Troubleshooting

Taking customers’ favorite drinks off the menu because of technical or mechanical difficulties can compromise your brand reputation and, ultimately, your bottom line. That’s where Multiplex Blend-in-cup troubleshooting comes in. Sometimes, just knowing there’s something you can do can go a long way in easing tensions and tempers when things don’t go according to plan. So whether your Multiplex Blend-in-cup machine is not turning on, dispensing, filling or generally not working, Parts Town can help set you on the path to minimizing downtime and strengthening customer relationships.

Not Turning On 

Cause

Solution

Blown fuse 

Replace fuse

Tripped circuit breaker

Reset circuit breaker 

Unplugged power cord

Plug in power cord

Main power switch is off 

Turn main power switch on 

Temperature set too high 

Lower temperature

Faulty power outlet

Please contact an authorized service technician

Power outage

Please contact your local electric company

Display Screen Not Working 

Cause

Solution

Control board is locked

Program recipe in Menuconnect. Then, transfer it to the main system via USB drive

No installed recipe

Unplug the main power cord and plug back in to reset.

Not Dispensing 

If your smoothies or frappes resemble watered-down versions of their former glory, try these Multiplex blend-in-cup troubleshooting pointers: 

  • CO2 pressure is too low - If your Multiplex blend-in-cup is not dispensing properly, it might be a matter of a low CO2 canister. You can resolve the problem by replacing the canister. If it’s still not working, double-check that the lines are open and the regulator is set at 35 psi. The CO2 shutoff valve should be in the cabinet below the sink and the other next to the beverage rack.
  • Product is empty – Select the inventory icon on the main menu and check the status of the product lines. Here, it will tell you if any need to be replaced. 
  • Product bag is pinched – It could be that the product bag was pinched in a way that no product can flow into the connector. Readjust the bag so that there are no pinched or buckled areas.
  • Product is frozen – It might be that not enough time was allowed for the product bag to dethaw after taking it out of the freezer. Wait 48 hours before loading the new product into the cabinet.
  • No water supply or low water pressure – Ensure the water supply is turned on and the plain or chilled water supply regulator is set between 65-90 psi.
  • Product is not installed or installed incorrectly - It might be that there are no product bags installed or that they were installed incorrectly. Check each bag to ensure the connector (without the cap) is correctly positioned in the tray and coupled with the product inlet tubes.
  • Product line blocked - Sometimes, if you can’t coax your beverage out of the dispenser, it’s because there’s a blockage in the product line. Check the line and follow the steps as outlined below if you notice a blockage.
  • Ice not dispensing - If the ice is not dispensing, follow the procedures as outlined in the section below.  

How to Clear a Blocked Line

A blocked product line can cause dispensing problems in your Multiplex blend-in-cup. Follow the steps below to clear the blockage and get to churning out your favorite slushies, shakes, smoothies and frappes. 

  • Step 1. Add warm water to a squirt bottle – First, you’ll want to grab a squirt bottle and fill it with warm water.
  • Step 2. Remove the product bin – Next, remove the product bin from the cabinet so you can attach the squirt bottle to the product inlet tube with vinyl tubing.  
  • Step 3. Press the inventory icon and the product line – On the main menu, hit the inventory icon. This will take you to a screen showing product levels in all your lines. Select the one with the blockage.
  • Step 4. Press the green arrow two times – Without following the product replacement instructions, hit the green arrow two times in a row.
  • Step 5. Choose Prime Flavor – From there, select the middle icon labeled “Prime Flavor” and place a cup under the dispenser to catch the water you’ll push through the line with the squirt bottle.
  • Step 6. Choose Hold to Prime – Press the Hold to Prime icon while squeezing the squirt bottle. Product should enter the fill cup.
  • Step 7. Repeat step 6 – Repeat step 6 until the blockage clears.
  • Step 8. Return the product bin  – Detach the squirt bottle from the vinyl tubing and product inlet tube and return the product bin to the cabinet.
  • Step 9. Choose Hold to Prime – Afterward, check that the product bin was reattached correctly and the blockage is cleared by pressing the Hold to Prime button. Product should dispense into the cup.
  • Step 10. Press the green arrow – Once you’ve verified your Multiplex BIC machine is dispensing properly again, press the green arrow to exit.

Ice Not Dispensing 

Cause

Solution

Misaligned ice bin cover 

Position ice bin cover so the mark on the cover aligns with the ice bin 

Not enough ice in bin 

Add more ice 

Foreign objects blocking the ice rotor 

Remove foreign objects

Tripped circuit breaker 

Reset circuit breaker in the back, left corner

Ice stuck in chute 

Dislodge ice from chute with a straw

Warning: Never scoop or dig through ice with your hands, as there is a very sharp ice shaving blade hiding beneath. Always use an ice scoop to avoid injury.

Not Blending

Cause

Solution

Open blender door 

Close blender door 

Open blender door switch

Please contact an authorized service technician 

Misaligned drain grid

Align drain grid properly 

Door is off its track 

Insert door in its tracks

Not Filling Cup Properly 

Cause 

Solution

Product not installed correctly 

Check each bag to make sure the connector (without the cap) is correctly positioned in the tray and coupled with the product inlet tubes

Product is empty

Replace product bag

Product bag is pinched 

Readjust product bag 

Ice dispenser out of calibration 

Calibrate ice dispenser

Empty CO2 canister 

Replace CO2 canister 

CO2 pressure too low 

Check the lines are open and the regulator is set at 35 psi

Not enough ice in bin 

Add ice to bin 

Cup Overflowing

Cause 

Solution

Product is too warm

Allow time for product to cool 

Product bag is compressed

Readjust product bag or remove any foreign objects

Water pressure is too high 

Lower water pressure 

Water dispenser out of calibration 

Calibrate water dispenser

Product was reassigned to alternative spot

Perform dispenser calibration 

Ice dispenser out of calibration

Calibrate ice dispenser 

Flavor dispenser is out of calibration 

Calibrate flavor dispenser 

CO2 pressure too high 

Ensure CO2 pressure is 35 psi

Product lines are too hot after cleaning procedure

Wait 30 minutes for product lines to cool down. If problem persists, recalibrate

Compressor Runs Continuously 

Cause

Solution

Too much warm product was loaded in the cabinet 

Wait for product to cool down before loading the unit 

Open door 

Close door 

Faulty door gasket 

Replace door gasket 

Dirty condenser coil 

Clean condenser coil 

There’s ice on the evaporator coil 

  • Turn off the BIC machine 
  • Wait for coil to defrost 
  • Check thermostat isn’t set too low
  • Check gasket seal 

High Product Temperature Error

Cause

Solution

Open door 

Close door 

Open whipped cream door

Close whipped cream door 

Faulty door gasket 

Replace door gasket 

Too much warm product was loaded in the cabinet 

Wait for product to cool down before loading the unit 

Dirty condenser filter

Clean condenser filter

Not Rinsing Properly

Cause

Solution

Water supply line is not connected 

Connect water supply line 

Open door 

Close door 

Misaligned drain grid 

Align drain grid 

Door is off its tracks 

Insert door in its tracks

So you have your Multiplex Blend-in-cup troubleshooting squared away, but the best way to ensure no future trouble is abiding by a strict preventative maintenance schedule. Check out our Multiplex cleaning guide to ensure only the best-tasting drinks get dispensed into your customer’s awaiting cups.

Please contact a local authorized service agent who can help with these specific units and all your commercial kitchen equipment needs.