Technical Information
83
CVA 4062/CVA 4066/CVA 4068 Coffee Systems
3.8 F41 -- EEPROM Faulty/Data Fault
Cause:
EEPROM faulty/data fault.
Remedy:
1. See Control/Display Electronic EPWZ (N5) Removal, Section 025-4.1.
2. Install a new control/display electronic.
3.9 F42 -- Line Frequency Not Registered
Cause:
Frequency fluctuations or power-supply interference.
Remedy:
None.
3.10 F47 -- No Communication Between Control and Power Electronics
Cause:
Faulty interface between control and power electronics.
Remedy:
1. Check the wiring harness between the control electronic and the power electronic.
2. Replace the wiring harness, if necessary.
3.11 F73 -- Brew Unit Fault
Figure 070-1: Brew Unit Positioning Microswitches
After the brew unit is activated, if one of the two microswitches has not been activated
within approximately 10 seconds, fault code F73 is indicated.
Cause:
Brew unit jammed.
Remedy:
1. Switch off the appliance at the main switch.
2. Remove the brew unit from the appliance.
3. Check if the guide (Figure 070-2, Item 1) is correctly inserted in the brew unit.
1 Top positioning microswitch (basic setting) (S60/1)
2 Bottom positioning microswitch (pressure setting
and drainage setting) (S60/2)
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