Description

Understanding the Manitowoc 000015573 T4 Sensor: Troubleshooting & Replacement Guide

If your Manitowoc commercial ice machine is displaying a T4 error code (or E24-T4) or failing to cycle properly, the issue often stems from a malfunctioning temperature sensor.

The Manitowoc 000015573 Thermistor Probe Kit (also replacing part numbers 000008310 and 000013459) is a genuine OEM component designed to keep your unit running reliably. Here is a breakdown of what this sensor does, how to recognize failure symptoms, and how to replace it.

What Is the Manitowoc T4 Sensor?

The Manitowoc 000015573 is an NTC (Negative Temperature Coefficient) thermistor assembly. In Manitowoc’s Indigo and other commercial series ice machines, temperature thermistors act as precision sensors:

• T1 / T2: Monitor liquid line and discharge line temperatures.

• T3 (Inlet): Measures refrigerant line temperature at the evaporator inlet.

• T4 (Outlet): Measures refrigerant line temperature at the evaporator outlet.

The control board uses the readings from the T4 sensor to track evaporator performance during freeze and harvest cycles.