Carrier C708 - User Manual

Questions and Answers:

P
paulataylorSep 23, 2025
Why is the “Product Door Off” message displayed on my Carrier C708 Freezer?
- J
  jennifermoodySep 23, 2025
  If the “Product Door Off” message is displayed on your Carrier Freezer, it could be due to: * The door is off or is loose. Install the door and tighten the hand screws. * The door switch is faulty. Replace the switch. * The door switch is not properly installed. Make sure the door switch is fully inserted. * The 24V relay is faulty. Replace the relay. * The agitator motor is faulty. Replace the motor. * There is low voltage from the 24V transformer. Check the power supply connections, shorts, replace transformer.
E
Eric KempAug 25, 2025
Why is the product from my Carrier C708 Freezer too soft?
- J
  John WalkerAug 26, 2025
  If the product from your Carrier Freezer is too soft, consider the following possibilities: * Insufficient air space around the unit. Allow 6” (152 mm) minimum clearance around both sides of the unit and place the back against a wall. * Worn scraper blades. Replace the scraper blades. * Dirty air-cooled condenser. Clean monthly. * Outdated mix. Use fresh mix. * Refrigerant shortage. Locate leak and repair. * Product viscosity set too warm. Adjust product viscosity. * Incorrect usage of the mix feed tube (C709/C717). Follow the correct feed tube procedures and use of the air orifice. * Incorrect DBV setting. See “Checking and Setting Refrigeration Valves.”
D
David FowlerAug 27, 2025
How to fix a Carrier C708 Freezer with no operation in any mode?
- A
  Andrew DuffyAug 27, 2025
  If your Carrier Freezer isn't operating in any mode, check these potential causes: * The unit might be unplugged. Ensure it is plugged in. * The circuit breaker could be turned off, or the fuse might be blown. Turn on the circuit breaker or replace the fuse. * The power switch may be in the “OFF” position. Place the power switch in the “ON” position.
K
kleinbrittanyAug 27, 2025
What causes high head pressure in a Carrier C708 Freezer?
- J
  Jonathan WilsonAug 27, 2025
  High head pressure in your Carrier Freezer can be caused by: * A dirty condenser. Clean the condenser. * A water valve that is out of adjustment or restricted. Check the adjustment and the water supply. * Insufficient air space around the unit. Ensure sufficient air space surrounds the unit (see “Specifications”). * Refrigerant overcharge. Correct the refrigerant charge. * A faulty blower. Replace the blower.
M
murraymarieAug 28, 2025
Why is product not being fed into the freezing cylinder of my Carrier C708 Freezer?
- J
  jennifer32Aug 29, 2025
  If product isn't being fed into the freezing cylinder of your Carrier Freezer, it could be due to: * Inadequate mix in the hopper (mix out light is lit). Fill hopper with mix. * Air/mix pump incorrectly assembled (C708/C716). Assemble pump according to instructions in the Operator’s Manual. * Incorrect usage of the mix feed tube (C709/C717). Follow the correct feed tube procedures and use of the air orifice.
A
Anthony PerrySep 16, 2025
Why does my Carrier C708 Freezer go into standby when I press AUTO?
- A
  Adam TaylorSep 16, 2025
  If your Carrier Freezer goes into “STANDBY” when “AUTO” is pressed, it could be due to: * A mix-out condition. Add mix. * A hard lock. Check the display screen for instructions.
B
Brittany CookSep 14, 2025
Why is product popping when drawn from my Carrier Freezer?
- J
  Jeff MaciasSep 14, 2025
  If the product is “popping” when drawn from your Carrier Freezer, it could be due to: * The draw rate being set too fast. Set the draw rate at 5 - 7-1/2 ounces of product per 10 seconds. * The pump being assembled/lubed incorrectly (C708/C716). Assemble pump according to instructions in the Operator’s Manual. * The freezer has been turned on and off several times. Place the unit in the “OFF” position only when necessary.
M
mark91Sep 15, 2025
What causes scored freezing cylinder walls in a Carrier C708?
- R
  robert85Sep 15, 2025
  Scored freezing cylinder walls in your Carrier Freezer may be caused by: * A bent beater assembly. Replace the beater. * Missing or worn front bearing. Install or replace the front bearing. * Scraper blades incorrectly installed. Install scraper blades over the appropriate securing pin on the beater assembly.
W
Wesley SmithSep 6, 2025
How to stop a leaking draw valve on a Carrier C708 Freezer?
- M
  Mrs. Amanda BeasleySep 6, 2025
  A leaking draw valve on your Carrier Freezer could be caused by: * Worn or missing draw valve o-rings. Replace regularly. * Inadequate lube on draw valve o-rings. Lubricate properly. * The wrong type of lubricant being used. Use proper lubricant. Example: Taylor Lube High Performance.
K
Kathy WilkersonSep 4, 2025
What to do if the mix in the hopper of Carrier C708 is too warm?
- R
  reyescharlesSep 4, 2025
  If the mix in the hopper of your Carrier Freezer is too warm: * The temperature is out of adjustment. Adjust hopper temperature. * The agitator is not installed. Install the agitator.

Carrier C708 Specifications

General

Brand	Carrier
Model	C708
Category	Freezer
Language	English

Summary

Section 1: Introduction

Safety

Information regarding safety features and precautions for operators and service technicians.

Refrigerant

Details about the R404A refrigerant used, handling precautions, and EU directive compliance.

Specifications

Detailed specifications for models C708, C709, C716, and C717, including dimensions and electrical.

General Installation Instructions

General guidelines for installing the freezer, including disconnect switches and air clearance.

Running Specifications

Recommended operating pressures and temperatures for the freezer components.

Important to the Operator

Overview of operator controls, indicators, and symbols used on the machine.

Section 2: Controls, Systems and Operations

Universal Control Programming

Explanation of the control system's operating screens, initialization, and data handling.

Heat Treatment Cycle

Description of the heat treatment cycle's function, phases (Heat, Hold, Cool), and lock-out conditions.

Heat Treatment Graph

Visual representation of the heat treatment cycle phases and timing requirements.

Freezer Lock-out

Information on hard lock and soft lock conditions, their causes, and resolution.

Power Interrupt

Details on how the machine recovers from power failures and brush clean requirements.

Pump Operation

Explanation of the mix pump's operation, including pump key and draw timer.

Timers

Description of various timers used in the machine's operation, such as stir, pump, and safety timers.

Jumper Pins - UVC3

Explanation of jumper pin functions for different configurations and interface board jumpers.

Beater Stir Cycles

Description of beater motor operation in STANDBY and HEAT modes.

Setting Viscosity

Guidance on adjusting soft serve viscosity by monitoring beater motor amperage.

Control Overview

Diagrams illustrating the control systems for C708/C709 and C716/C717 models.

Refrigeration System - Hot Gas Treatment

Explanation of the refrigeration system's components and hot gas treatment process.

Checking and Setting Refrigeration Valves

Step-by-step procedures for checking and setting refrigeration valves and system pressures.

Refrigeration Schematic

Diagram illustrating the refrigeration system layout, components, and pressures.

Refrigeration System Components

List and descriptions of the various components within the refrigeration system.

Section 3: Troubleshooting

General Troubleshooting Guide

A table listing common problems, their causes, and suggested remedies.

Electrical Troubleshooting Guide

Table showing component operation across different modes (HEAT, STANDBY, WASH, AUTO, PUMP).

Pump Style Freezer Troubleshooting

Specific troubleshooting steps for issues related to the air/mix pump operation.

Solenoid Valve Failure Troubleshooting

Symptoms and results of solenoid valve failures in hot gas units.

Bacteria Troubleshooting

Information on bacteria counts, causes of contamination, and prevention methods.

Section 4: Parts

Parts Warranty Explanation

Details on warranty periods for different classes of parts and warranty conditions.

Parts Identification

Exploded views and part identification lists for models C708, C709, C716, and C717.

Parts List

Comprehensive list of all available parts with part numbers, quantities, and class information.

Related product manuals

Carrier COMFORTLINK 48A2

Carrier 50gs sizes 018-060

Carrier C708 - User Manual

Table of Contents

Questions and Answers:

Carrier C708 Specifications

Summary

Section 1: Introduction

Safety

Refrigerant

Specifications

General Installation Instructions

Running Specifications

Important to the Operator

Section 2: Controls, Systems and Operations

Universal Control Programming

Heat Treatment Cycle

Heat Treatment Graph

Freezer Lock-out

Power Interrupt

Pump Operation

Timers

Jumper Pins - UVC3

Beater Stir Cycles

Setting Viscosity

Control Overview

Refrigeration System - Hot Gas Treatment

Checking and Setting Refrigeration Valves

Refrigeration Schematic

Refrigeration System Components

Section 3: Troubleshooting

General Troubleshooting Guide

Electrical Troubleshooting Guide

Pump Style Freezer Troubleshooting

Solenoid Valve Failure Troubleshooting

Bacteria Troubleshooting

Section 4: Parts

Parts Warranty Explanation

Parts Identification

Parts List

Related product manuals