Manitowoc IYT1200C

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Part Number 000014141 Rev 07 2/20

Indigo NXT Ice Machines

Installation, Operation and Maintenance Manual

Original Document

,

Caution

Read this instruction before operating this equipment.

Engineered for Ease

Table of Contents

Other manuals for Manitowoc IYT1200C

Technician's Handbook212 pages

Questions and Answers:

J
John KingAug 13, 2025
Why is my Manitowoc IYT1200C not working?
- E
  Eric AndersonAug 13, 2025
  If your Manitowoc Ice Maker isn't operating, several factors could be at play. First, ensure the unit is receiving electrical power by checking the fuse, resetting the breaker, or turning on the main switch. A tripped high-pressure cutout might also be the culprit, requiring you to clean the condenser coil. Confirm that Energy Saver settings or other custom programming aren't inadvertently halting the ice machine. Make sure the water curtain is correctly installed and swings freely. Verify the ice machine is powered on, with the display indicating “Making Ice”. For IB Models, check that the dispenser ice level thermostat is correctly adjusted.
J
Jennifer MurrayAug 16, 2025
Why is my Manitowoc IYT1200C not making ice?
- M
  morganbennettAug 16, 2025
  Your Manitowoc Ice Maker might not be operating due to several reasons: * There's no electrical power: Replace the fuse, reset the breaker, or turn on the main switch. * The high-pressure cutout is tripping: Clean the condenser coil. * Energy Saver mode is stopping the ice machine: Reset to factory defaults. * The water curtain is off or stuck open: Ensure the water curtain is installed and swinging freely. * The ice machine is not turned on: Press the power button; the display must indicate “Making Ice.” * For IB Models Only - The dispenser ice level thermostat is open: Adjust the thermostat to maintain the correct dispenser level.
A
Ashley TownsendAug 20, 2025
How to fix a Manitowoc Ice Maker that is not releasing ice?
- J
  Jeremy JacksonAug 21, 2025
  If your Manitowoc Ice Maker is not releasing ice or is slow to harvest, several factors could be responsible. Start by descaling and sanitizing the ice machine, as it might be dirty. Ensure the ice machine is level. The air temperature around the ice machine head section must be at least 35°F (2°C). If the fan cycle control isn't de-energizing the condenser fan motor, call for service. Check if the water regulating valve is incorrectly adjusted or won't close; if water is present at the condenser drain outlet during the harvest cycle, contact a qualified service company to adjust or replace the valve.
J
Justin ScottAug 25, 2025
What to do if my Manitowoc Ice Maker produces poor quality ice?
- S
  Sara CrossAug 25, 2025
  If your Manitowoc Ice Maker is producing soft or unclear ice, it could be due to: * Poor incoming water quality. * Poor water filtration: Replace the filter. * The ice machine is dirty: De-scale and sanitize the ice machine. * The water dump valve is not working: Disassemble and de-scale the water dump valve. * The water softener is working improperly (if applicable): Repair the water softener.
J
Jeremy LinAug 28, 2025
Why is my Manitowoc IYT1200C producing shallow or incomplete cubes?
- B
  Bobby BrooksAug 28, 2025
  If your Manitowoc Ice Maker is producing shallow or incomplete cubes, or the ice fill pattern on the evaporator is incomplete, consider the following: * The ice thickness probe is out of adjustment: Adjust the ice thickness probe. * The water trough level is too low: Check the water level probe position. * The water inlet valve filter screen is dirty: Remove the water inlet valve and de-scale the filter screen. * Poor water filtration: Replace the filter. * Hot incoming water: Connect the ice machine to a cold water supply. * The water inlet valve is not working: Replace the water inlet valve. * Incorrect incoming water pressure: Ensure water pressure is between 20 psi - 80 psi (140 kPa - 550 kPa). * The ice machine is not level: Level the ice machine.
O
oscarnicholsAug 31, 2025
How to fix low ice capacity in my Manitowoc IYT1200C?
- N
  Nicholas PattonAug 31, 2025
  If your Manitowoc Ice Maker has a low ice capacity, check these possible causes: * The water inlet valve filter screen is dirty: Remove the water inlet valve and de-scale the filter screen. * The incoming water supply is shut off: Open the water service valve. * The water inlet valve is stuck open or leaking: Press the power button and turn off the ice machine; if water continues to enter the water trough, replace the water inlet valve. * The condenser is dirty: Clean the condenser. * High air temperature entering the condenser. * The harvest assist air compressor is not functioning.
E
Erika LinSep 4, 2025
What to do if my Manitowoc IYT1200C does not release ice?
- K
  Katie StrongSep 4, 2025
  If your Manitowoc Ice Maker is not releasing ice or is slow to harvest, consider these potential issues: * The ice machine is dirty: De-scale and sanitize the ice machine. * The ice machine is not level: Level the ice machine. * Low air temperature around the ice machine head section: Ensure the air temperature is at least 35°F (2°C). * Fan cycle control does not de-energize condenser fan motor. * The water regulating valve is incorrectly adjusted or will not close: Check for water at the condenser drain outlet in the harvest cycle. Contact a qualified service company to adjust/replace the valve if water is present.
C
Catherine LawrenceSep 8, 2025
Why won't my Manitowoc Ice Maker cycle into harvest mode?
- A
  Amber CooperSep 8, 2025
  If your Manitowoc Ice Maker is not cycling into harvest mode, it might be due to: * The six-minute freeze time lock-in has not expired yet: Wait for the freeze lock-in to expire. * The ice thickness probe is dirty: De-scale and sanitize the ice machine. * The ice thickness probe is disconnected: Connect the probe to the control board. * The ice thickness probe is out of adjustment: Adjust the ice thickness probe. * Uneven ice fill (thin at the top of the evaporator): Verify sufficient water level in the sump trough. Contact a qualified service company to check the refrigeration system.

Manitowoc IYT1200C Specifications

General

Model	IYT1200C
Type	Ice Maker
Condenser Type	Air-Cooled
Depth	24 inches
Voltage	208-230V
Phase	1
Hertz	60 Hz
Production Capacity	1200 lbs/24 hours
Water Connection	3/8 inch
Refrigerant	R-404A

Summary

Safety and Definitions

Safety Precautions

Read precautions to prevent personal injury.

Hazard Definitions

Explains hazard symbols and terms like Danger, Warning, Caution.

General Information

Model Identification

Lists supported models and how to read model numbers.

Accessories Overview

Details available accessories like Ice Deflector, AuCS, Luminlce II.

Installation

Location and General Requirements

Criteria for location, general requirements, temperatures, and clearances.

Electrical Requirements

Guidelines for wiring, breakers, ampacity, and GFCI.

Water and Drain Connections

Sizing, connecting water/drain lines, and air gaps.

Remote Condenser System Installation

Details on installing remote condenser systems, line sets, and calculations.

Starting the Ice Machine

Steps for initial startup, probe bracket removal, and slab weight.

Operation

Touchscreen Interface and Setup Wizard

Overview of the control panel, touchscreen, and setup wizard.

Ice Making Process and Control

Describes the ice making sequence, timers, and safe modes.

Ice Thickness Adjustment

How to check and adjust ice thickness.

Maintenance

Cleaning and Sanitizing Procedures

Detailed steps for descaling, sanitizing, inspection, and exterior cleaning.

Component Cleaning and Removal

Instructions for cleaning parts and air filters.

Winterization Procedures

Procedures for taking the machine out of service.

Troubleshooting

Before Calling for Service Checklist

Checklist to diagnose common problems.

Service Faults

Explains specific fault codes and troubleshooting.

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