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Vacuum Breaker:

• When the machine is heang from cool and begins to build pressure from zero, it is normal for the vacu-

um breaker to spuer unl the steam tank is near full pressure.

• If spuering occurs when the steam tank is near or at the set pressure, replace the vacuum breaker.

Sight Glass:

• Steam or water leaking from around the glass tube of the sight glass indicates that the internal O-rings

are worn. Purchase a rebuild kit and replace the O-rings.

General Issues

Beeping Machine:

• Low level alarm probe is not grounding out. Power cycle the machine. Inspect and clean the probe. En-

sure the tank is lling. Check for adequate water ow to the machine.

Portalter Stopping Point is O

• Under normal circumstances, when the portalters are fully engaged the handle will face the barista. If

the portalter stopping point is occuring before this point (handle points to the le), check that the

standard size 8.5 mm gaskets are being used and that the gasket is seated fully around the diuser block.

• If the portalter stopping point is occurring aer the normal point (handle points to the right), inspect

the “ears” of the portalter for wear. If brass is showing on the ears, try using the taller 9mm gaskets.

Alternately, you can replace the portalter head.

Pump/Motor is Making an Unusual Sound:

• Make sure the water to the pump is fully on. Check the lters for clogs, change if needed. Check the wa-

ter lines for kinks.

• Pump may be worn and in need of replacement.

High-Pitched Whistling Noise When Groups are Acve:

• Water is leaking out from the brew system. Check for VMUF0# error. Remove the right side panel and

inspect the expansion valve. Ensure the expansion valve is not dripping while a shot is brewing or blind

lter is engaged at full pump pressure. Adjust the expansion valve if needed.

• Check that water is not leaking from the brew valve discharge while the machine is idle or brewing. Un-

der normal circumstances, a small amount of water will be discharged only when the group goes from ON

to OFF.

TROUBLESHOOTING

Synesso MVP Hydra Technical Manual

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