Troubleshooting - La Marzocco GB/5 Manual

• This espresso machine is equipped with several feedback mechanisms that alert the operator when an unusual condition occurs.
Additionally the espresso machine will warn the operator when certain parameters fall below or above the programmed point. These errors
and warnings will appear as a message in the display.
• The following section will describe errors and warnings that may appear in the display
Message Description
This is the irst installation of the espresso machine
Fi r s t i ns t al l at .
and the CPU is asking for veriication of this event.
Ent er t o c o nf i r m
This message is displayed after the boilers have
Cof f ee boi l er
been drained. The CPU is verifying that the coffee
f i l l ed?
boiler is full.
This message is displayed when the CPU does not
Co r r u pt ed
understand an instruction.
Dat a
This message is displayed when the steam boiler
Fi l l i ng- u p
autoill cycle is activated and water is entering the
i n pr og r es s
steam boiler.
This message is displayed when the CPU does not
Fi l l i ng- u p
detect a full signal from the steam boiler within the
Al a r m
set time interval.
This message is displayed when the CPU does not
St ea m Boi l er
receive any signal from the Safety Probe in the
Empt y
steam boiler.
This message is displayed when the steam boiler
St ea m Boi l er
temperature exceeds
Temper at u r e
temperature.
This message is displayed when the CPU does not
Fl o wmet er
receive the appropriate signal from the lowmeter.
Al a r m
This message is displayed when the coffee boiler
Cof f ee Boi l er 1
does not reach the minimum temperature with the
Heat i ng
programmed time interval.
This message is displayed when the coffee boiler
Cof f ee Boi l er
temperature exceeds
Temper at u r e
temperature.
This message is displayed when the autosteam
Aut os t ea m 1
temperature exceeds
Temper at u r e
temperature.
This message is displayed when password entered
W r o ng
does not match the programmed password.
Pas s wo r d

Troubleshooting

Press the ENTER button on group 1 keypad to conirm. Then will initialize the CPU and boot the
electronics.
Fill the coffee boiler with water (see operating manual for detailed instructions). Ensure that all air is bled
from the coffee boiler using the air bleed screw atop each group casting. The CPU will display this message
to ensure that the coffee boiler is full before supplying power to the coffee boiler heating element.
Most likely the machine power was disconnected with out irst turning off the machine through the
keypad and display. Turn off machine using main switch to cycly power on and off. This should clear
the error.
No action is required when this message is displayed. This message is only displayed to notify the
operator of the active process.
When this message is displayed the CPU also shuts down and turns off power to the machine (see the
parameter "Level Timeout"). Press the ON/OFF button to reset this error.
When this message is displayed the CPU turns off power to the steam boiler heating element. The only
way to reset this error is to repair the Safety Probe to restore the signal to the CPU.
When this message is displayed call an authorized service technician to repair this fault. The also CPU
the maximum allowed
turns power off to the steam boiler.
When the lowmeter alarm is displayed, the light on the corresponding button that initiated the brew cycle
will begin to lash. This problem is a result of water not lowing through the low meter. This can be caused
by the coffee packed too tightly, a blockage in the tubes, a malfunctioning water pump, a faulty valve, or
a damaged lowmeter. Call a service technician to ix this problem.
See the parameter "Heating Timeout" for more information. The number on the display corresponds to
the number of the faulty coffee boiler.
If this happens call an authorized service technician to repair this fault. When this message is displayed
the maximum allowed the CPU turns power off to the coffee boiler displayed. The number in the display corresponds to the
faulty coffee boiler.
If this happens call an authorized service technician to repair this fault. The number in this message
the maximum allowed
indicates the faulty Autosteam assembly.
This error message will be displayed anytime an incorrect password is entered. The display will reset
automatically after 3 seconds. Then an addional attempt may be made.
Message Solution