6.4Fault Diagnosis, Brew Unit cannot be installed | Miele CVA615

6.4Fault Diagnosis

CVA615 Coffee System

Technical Information

6.4Fault Diagnosis

When two cups of coffee / espresso are being prepared at the same time, the cups are filled unevenly.

Appliance is not level.

-Level the appliance

Coffee nozzle is dirty.

-Clean the coffee nozzle.

Brew Unit cannot be removed from the appliance.

The brew unit is not in the starting (home) position.

-Reset the brew unit to the starting (home) position.

The brew unit is jammed and cannot be removed by resetting the appliance (i.e. shutting the door and turn on the power).

-Perform the manual removal procedure.

Inspect the brew unit and/or drives to locate fault.

Brew Unit cannot be installed

The part marked PRESS was pressed during installation of the Brew Unit.

-Do not press the part marked PRESS when installing the Brew Unit; this only applies during Brew Unit removal.

The Brew Unit is not in the starting (home position).

-Perform a manual resetting of the Brew Unit.

The drive shaft is not in the starting (home) position.

-Reset the Brew Unit to the starting (home) position via the Service Mode.

-Carefully inspect the Brew Unit and/or drives to locate fault (i.e. defective switch etc...)

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Miele CVA615 manual 6.4Fault Diagnosis, Brew Unit cannot be removed from the appliance, Brew Unit cannot be installed

Contents

2007 Miele USA TECHNICAL INFORMATION CVA615 Coffee System CVA615 Coffee System – Table of Contents Service and Maintenance Fault Diagnosis CVA615 Coffee System – List of Figures CVA615 Coffee System – List of Figures continued Figure 5-43:Beans Container Guide Technical Information CVA615 Coffee System – List of TablesTable 6-2:Service Mode Navigation CVA615 Coffee System 1Hot Water Dispenser 1.0Construction and Design1.1Appliance Overview 2Coffee Dispensers Height-Adjustable 1.1.3Interior Front of Appliance Opened 1.1.2ControlsFigure 1-2: CVA Controls Product Dimensions 1.2Technical DataElectrical Information 12Steam Solenoid Valve 13Power Electronic Board 1.3Layout of Components6Drive Assembly Mounted to Wall 7Drive Assembly Cover 8Hot Water / Coffee Heater Figure 2-1: Operating Manual 2.0Installation 3.1General Operation 3.0Commission and Operation Figure 3-5: Steam Selector 3.1.2Canceling the PreparationFigure 3-4: Canceling the Preparation Process 3.1.3Steam Control 3.1.4Hot Water Controls 3.1.5Adjusting the Coffee Grinder 3.1.6Filling the Coffee Beans Container 3.1.7Filling the Water Tank 4.2Overflow Reed Switch 4.1Door Switch4.0Description of Function 4.4Brew Unit Removal from the Appliance 4.3Brew Unit – Cleaning and CareFigure 4-2: Brew Unit in “Home” Position Operation 4.5Connection of Brew Unit to Drive Mechanism 4.6Brewing Procedure 1Outlet 2Top Filter 3Compressed Coffee Figure 4-5: Brew Unit Components4Water Nozzle Socket 5Bottom Filter Refer to Figure 4-6– Brew Unit, Showing Compressed Coffee “Puck” 4.7Grounds Container 4.8Waste Unit Present SwitchFigure 4-7: Waste Unit Present Switch Figure 4-8: Waste Unit 1 Magnet for Present Switch Actuation 4.9Water Tank Figure 4-10: Water Level Switch 4.10Water Level SwitchFigure 4-11: Water Level Switch Float When the water tank is installed, and contains at least 30-33ounces of water; the Water Level Switch is activated and its contacts close Figure 4-12: Grinder Assembly 4.11Grinder Assembly Refer to Figure 4-12– Grinder Assembly 1Grinder Motor 2Carrier 3Mounting 4Spring 5Ball 4.12Grinder – Overload Protection6Grinding Cone 7Washer 8Intake Worm Gear CForce Transfer Interrupted ANormal Operation BOverload Protection Activated Figure 4-15: Coffee Dispensing Components 4.13Ground Coffee Dispensing 4.14Dispenser Switch 1Brew Unit Drive Shaft Socket 2Socket 4.15Brew Unit Drives3Locking Mechanism Switch Lug 4Switch – Brew Unit Present Switch Refer to Figure 4-18– Brew Unit Drive Assembly Coffee / Hot Water Heater 1R1 & 1R2 4.16Water Pump4.17Flow Meter 4.18Heaters Figure 4-19: Hot Water / Coffee Heater 4.19Flow Through Heaters 1Heater Element 2Thermal Fuse 3Thermostat Figure 4-20: Steam Heater4Temperature Sensor PTC Figure 4-21: Water Path 4.20Water Path 4.20.4Water Path – Steam 4.20.1Water Intake4.20.2Water Path - Coffee 4.20.3Water Path – Hot Water Figure 4-22: Water Valve Disassembled 4.21Water Valve 4.22.1Power Electronic 4.22Electronic Assemblies Figure 4-24: CPU Control Electronic 4.22.2CPU Electronic 5.1Lid - Removal 5.0Service and Maintenance 5.3Rear Panel - Removal 5.2Interference Suppression Filter Z1 - Removal 1.Open the door 2.Pull off the slide switch knobs 5.4Adjustment Slide Switch Frame - Removal4.Remove the frame 5.Remove the Door Switch to the front 5.5Door Contact Switch S24 - RemovalRefer to Figure 5-5– Door Switch 3.Disconnect the Door Switch Connections 5.6Base Plate - Removal 2.Remove the Base Plate – Refer to Section 5.7Drip Tray - Removal3.Remove the Drip Tray - Refer to Figure 2Magnet Inside of the Float 5.8Overflow Switch Actuator Float - Removal1Overflow Switch Float 3. Remove the float 2.Remove the Overflow Switch Fixing Screw Item 5.9Overflow Switch B8/3 - Removal3.Remove the Overflow Switch 3.Remove the Lower Rear Panel Fixing Screws Item 5.10Rear Door Panel - Removal1.Open the door 2.Remove the Upper Rear Panel Fixing Screws Item 4.Remove the cover 5.11Fascia Panel Cover - Removal2.Remove the Rear Door Panel – Refer to Section 3.Remove the Cover Fixing Screws Item 5.12Selector Switch - Removal 5.13Display Module Electronic - Removal 5.14Coffee Dispensing Nozzle - Removal 5.15Coffee Dispensing Nozzle - Installation 1.Open the door 5.18Hot Water Valve Y12 - Removal 5.17Hot Water Nozzle - Removal 5.19Checking Temperature at Coffee Dispenser 5.20Brew Unit – Removal in Start/Home Position 5.21Brew Unit – Removal NOTin Start/Home Position 1Connection Socket 2Retaining Screw Figure 5-17: Brew Unit 5.23Brew Unit – Cleaning Procedure 5.22Brew Unit - Installation 5.24Brew Unit – Filter Cleaning RINSING RINSING CYCLE 5.25Brew Unit – Degreasing via the Rinse Cycle SELECT PRODUCT READY FOR USE RINSING CYCLE 5.26Brew Unit - Lubrication Refer to Figure 5.29Brew Unit Handle - Removal 5.28Brew Unit Creamer Valve - Removal 5.30Brew Unit Funnel - Removal 5.31Brew Unit Ram - Service 1Filter Screw 2Filter 3Lubrication Points Figure 5-31: Ram Assembly 5.32Brew Unit Drives - Service 16.Refer to Figure 5-32– Front Plate Assembly with Retaining Screws Locations. Remove the two Hot Water / Coffee Heater Screws; Separate the Heater from its mounting position Figure 5-34: Grinder Retaining Nuts Figure 5-33: Grinder Retaining Screws 21.Remove the Adjustment Slide Switch Frame Service Tip 4.Remove the Water Tank Float 5.33Water Tank Float - Removal1.Open the door 2.Remove the Water Tank 3.Remove the cap from the Water Tank 4.Remove the Lip Seal 5.34Water Tank Lip Seal - Removal2.Remove the Water Tank – Refer to Section 3.Lever off the Lip Seal Cap 3.Remove the Lip Seal Refer to Figure 5.35Lower Section of Tank Valve - Removal 7.Remove the lower part of the valve 5.Remove the Bottom Plate and Drip Tray 5.36Beans Container - Removal 5.37Beans Container Guide - Removal 5.38Grinder - Disassembly 10.Remove the bracket Figure 5-45,Item Refer to Figure 5-46– Grinder – Apart 5.39Grinder Assembly – Basic Setting 5.40Grinder Unit - Removal 5.41Dispensing Solenoid - Removal 5.42Dispenser Switch - Removal 5678 34 5.43Waterpath & Flowmeter - Testing 4.Release all three coffee buttons 5.44Water Path Leakage Test 5.46Water Path Connections - Closing 5.45Water Path Connections - Opening 6.1Programming Mode 6.0Fault Diagnosis Initial requirements 6.2Service ModeAccess Acknowledgement Indicator Service Mode - Navigation Displayed Message 6.3Displayed MessagesInformation The level switch has been actuated by water being Brew Unit cannot be installed 6.4Fault DiagnosisBrew Unit cannot be removed from the appliance Perform the following