Service Manual

ManualsBrandsMARVEL ManualsBeverage CentersML24BCG0LS

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Table Of Contents

Cover Page
Section 0 (Table of Contents)
Section 1 (Introduction)
- 1.1 Unit Specifications
- 1.2 Serial Nameplate
- 1.3 Servicing
- 1.4 Basic Refrigeration Tools
- 1.5 Basic Installation
- 1.6 Electrical Requirements
Section 2 (Sealed System)
- 2.1 Introduction
- 2.2 Low Side Leaks
- 2.3 High Side Leaks
- 2.4 Restricted Capillary Tube
- 2.5 Access/Process Valves
- 2.6 Evaporator Frost Pattern
- 2.7 Measuring Evaporator Temperature
- 2.8 Re-charging
- 2.9 Temperature / Pressure Chart
Section 3 (Sealed System Components)
- 3.1. Toe Grill Removal
- 3.2: Warnings and Cautions
- 3.3 Accessing the Mechanical Compartment
- 3.4: Compressor
- 3.5: Condenser
  - 3.5.1: Remove the Condenser
  - 3.5.2: Install a New Condenser
- 3.6: Evaporator
  - 3.6.1: Remove the Evaporator
  - 3.6.2: Install a New Evaporator
Section 4 (Electrical Component Access)
- 4.1: Condenser Fan
- 4.2: Evaporator Fan Access
- 4.3: Thermistor Locations
Section 5 (User Interface Display)
- 5.1 Model Variations
- 5.3 User Interface Navigation – Beverage Centers
- 5.4 User Interface Navigation – Wine Coolers
- 5.5 User Interface Navigation – Refrigerated Drawers
- 5.5 User Interface Navigation – Beer Dispenser
Section 6 (Control System)
- 6.1 User Interface Display
  - 6.1.1 Removing the User Interface Display
  - 6.1.2 Installing a new User Interface Display
- 6.2: Main Control Board
- 6.3: Cabinet and Defrost Thermistors
- 6.4: Temperature Resistance Chart
- 6.5: Door Sensor
  - 6.5.1: Door Sensor Removal
  - 6.5.2: Door Sensor Replacement
- 6.6: Defrost Modes
- 6.7 Error Codes
Section 7 (Lights, Doors, Drawer, and Hinges)
- 7.1 LED Lighting
  - 7.1.1: Replacing the LED Light
- 7.2: Cabinet Door
  - 7.2.1 Door Removal
  - 7.2.2 Bottom Door Closer
- 7.3: Refrigerated Drawers
- 7.4: Doors / Drawers Handle Adjustment
- 7.5: Door Alignment /Adjustment
- 7.6: Gasket Adjust / Replace
- 7.7 Articulating Hinges
Section 8 (Evaporator Compartment Access)
- 8.1: Beverage Centers
- 8.2: Wine Coolers
- 8.3: Refrigerated Drawers
- 8.4: Evaporator Cover Drip Edge
Section 9 (Wiring Diagrams)
- 9.1 Block Diagram of Main Power Board
- 9.2 Schematic Diagram
- 9.3 Main Power Board Identification
Section 10 (Power On reset Mode)
- 10.1: Auto Self-Test
- 10.2: Manual Auto Test Mode
- 10.3: Control Types
Section 11 (Quick Reference Troubleshooting)
Section 12 (Diagnostic Flow Charts)
Section 13 (Gathering Service Data)
- 13.1: PROGRAM PORT
Section 14 (Beer Dispenser)
- 14.1: Interior mechanical / electrical components
- 14.2: Main Control Board Access
- 14.3: Machine Compartment
- 14.4: Excerpt from Owners / Maintenance Instruction Guide
Section 15 (Dual Zones)
- 15.1: User Interface Control
- 15.2: Operation
- 15.3: Characteristics
- 15.4: Dual Zone Compartment Air Flow
- 15.5: Divider Removal
- 15.6: Damper Operation
- 15.7: Compartment Fan Operation
- 15.8: Heater Operation
- 15.9: Thermistors
- 15.10: Evaporator Access
- 15.11: Interior LED’s
- 15.12: Defrost / Drip Time
- 15.13: Refrigeration and Mechanical
Section 16 (Refrigerator Freezers)
- 16.1: User Interface Control
- 16.2: Operation
- 16.3: Characteristics
- 16.4: Damper Operation
- 16.5: Fan Operation
- 16.6: Thermistors
- 16.7: Refrigeration and Mechanical
- 16.8: Evaporator
- 16.9: Defrost
- 16.10: ACCESS TO THE DEFROST COMPONENTS
- 16.11: RFI (Refrigerator Freezer- Ice Maker)
Section 17 (Outdoor Models)
- 17.1: Operation
- 17.2: Characteristics / Differences
- 17.3: Fans
- 17.4: Thermistors
- 17.5: Control Type
- 17.6 : Control Functions
- 17.7: Control Locations per Model
- 17.8: Machine Compartment
- 17.9: Main Power Board Access
- 17.10: Display Access and Replacement
- 17.11: Thermistor Resistance
- 17.12: Wiring Diagram
- 17.13: Generic Trouble shooting Charts
- 17.14: Refrigeration and Mechanical
Section 18 (Prime Control)
- 18.1: Control Type
- 18.2: Control Functions
- 18.3: Fans
- 18.4: Thermistors
- 18.5: Machine Compartment
- 18.6: Thermistor Resistance
- 18.7: Wiring Diagram
- 18.8: Generic Trouble shooting Chart
- 18.9: Refrigeration and Mechanical
Section 19 (Clear Ice Machines)
- 19.1 Control Operation
- 19.2: Control System
- 19.3: Interior Features
- 19.4: Machine Compartment Components
- 19.5: Diagnostic Test Modes
- 19.6: Diagnostic Charts
- 19.7: Trouble Shooting
- 19.8: VAC Wiring Diagram and Schematics
- 19.9: Specifications:
- 19.10: Production and Harvest Guidelines
Section 20 (Service Kits / Bulletins)
- 20.1: Service Bulletin # 41013862Mullion Condensation on Refrigerated Drawers
- 20.2: SERVICE BULLETIN # 41013861EVAPORATOR REPLACEMENT KIT
- 20.3: SERVICE BULLETIN # 41013995 Rev CContact between the Door and Door Sensor
- 20.4: SERVICE BULLETIN # 41014167Slotted Condenser Shroud
- 20.5: SERVICE BULLETIN # 41014168Showroom Mode Alarm
- 20.6: SERVICE BULLETIN # 41014169Evaporator / Heat Exchanger Replacement(RF and RFI Models ONLY)
- 20.7: SERVICE BULLETIN # 41014241Shelf Shim Kit
- 20.8: Service Bulletin # 41014242Miscellaneous Control Communication Errors
- 20.9: Service Bulletin # 41014243Replacement of MP Door Skins
Section 21 (Customer Service Contact Information)
Section 22 (Notes)
Back Page

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15.9: Thermistors

All temperatures are monitored individually by 10K @ 25°C NTC sensors (thermistor).

The dual zone has three thermistors, one for each compartment and a third mounted outside

the unit to sense ambient temperatures.

The ambient thermistor is located behind the toe grill and secured to the top of the machine

compartment. It is centrally located in the condenser intake air. If the ambient thermistor

senses a temperature above 85°F, the heater located in the upper compartment will be

disabled.

Upper View – thermistor is located on left hand side.

Bottom View – thermistor is located on right hand side.

Lower Thermistor Disconnect

Lower Thermistor Location

Upper Thermistor Location

Upper Thermistor Disconnect