Table of Contents
Problem 1 - Shot volumes are inconsistent.
Solution 1 - Limit rinsing of the portafilters with water from the brew group.
Page 32
Solution 2 - Inspect the flowmeter for proper operation.
Page 32
Solution 3 - Ensure the group heads are bled of any air.
Page 33
Solution 4 - Check for and repair a faulty ground connection.
Page 34
Problem 2 - The buttons on the keypad won’t respond but the manual override does.
Solution 1 - Check the fuse on the control board.
Page 35
Solution 2 - Check the keypads for proper operation.
Page 36
Problem 3 - A single LED flashes above a selected keypad product button.
Solution 1 - Ensure the grind is not too fine and/or the tamp too hard.
Page 37
Solution 2 - Check for and repair a faulty ground connection.
Page 37
Solution 3 - Inspect the flowmeter for proper operation.
Page 38
Problem 4 - All of the LEDs on every keypad are blinking.
Solution 1 - Ensure the water supply is turned on and the filters/softeners are
Page 39
operating properly.
Solution 2 - Inspect the auto-fill valve for proper operation.
Page 39
Problem 5 - The espresso seems cold and under-extracted.
Solution 1 - Limit rinsing of the portafilters with water from the brew group.
Page 41
Solution 2 - Reset the thermal limit switch or replace if necessary.
Page 41
Solution 3 - Adjust the coffee boiler’s thermostat, replace if necessary.
Page 42
Problem 6 - The dispensing pressure is incorrect.
Solution 1 - Adjust the external boost pump.
Page 44
Problem 7 - The machine is making a high-pitched squealing noise while brewing.
Solution 1 - Adjust the pump and/or expansion valve.
Page 44
Problem 8 - No steam pressure.
Solution 1 - Ensure the main power switch is in the proper position.
Page 45
Solution 2 - Ensure the heating element is receiving voltage and is operational.
Page 45
Solution 2.1 - Replace the heating element.
Page 46
Solution 3 - Ensure the pressure switch is functioning properly.
Page 47
Problem 9 - The steam assembly and/or wand is leaking.
Solution 1 - Rebuild the steam assembly.
Page 48
Problem 10 - Water leaks from around the portafilter while brewing.
Solution 1 - Replace the portafilter gaskets.
Page 51
Problem 11 - Shot volumes are consistently short.
Solution 1 - Replace the group valve plungers.
Page 52
Problem 12 - The steam boiler overfills.
Solution 1 - Inspect the auto-fill valve for proper operation and/or foreign object.
Page 54
Solution 2 - Inspect the auto-fill probe for scale build-up.
Page 55
Problem 13 - No water flow from the grouphead.
Solution 1 - Inspect the flowmeter for scale build-up.
Page 56
Solution 2 - Inspect the group valve for proper operation.
Page 56
Solution 3 -
I
nspect the group for a missing diffuser screen and screw.
Page 56
Unclog the banjo tube if necessary.
