HVAC Troubleshooting

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Control Devices

Boiler Control Valves: What They Are and How They Work

Posted on February 9, 2024 by Jack

Boiler control valves are devices that regulate the flow of water, steam, or fuel to and from the boiler. They are essential for maintaining the…

Control Devices

UTEC Ignition Control Module: A Basic Overview

Posted on February 9, 2024 by Jack

What is an ignition control module? An ignition control module (ICM) is an electronic device that controls the ignition system of a gas-fired furnace, boiler,…

Study Guide

Subcooling in Refrigeration: What, Why, and How

Posted on February 7, 2024 by Jack

Refrigeration is the process of transferring heat from a low-temperature region to a high-temperature region, using a substance called a refrigerant. A refrigerant is a…

Troubleshooting

What is a 5 Wire Motor and How to Wire It for Your HVAC System

Posted on February 7, 2024 by Jack

One of the most important components of an HVAC system is the fan motor, which circulates the air through the system. Fan motors can be…

Troubleshooting

The Effects of Crankcase Pressure on HVAC Compressor Performance and Reliability

Posted on February 7, 2024 by Jack

One of the most important components of an HVAC system is the compressor. The compressor is a device that increases the pressure and temperature of…

Understanding HVAC Service Valves
Service

Understanding HVAC Service Valves

Posted on December 15, 2023 by Jack

Heating, ventilation, and air conditioning (HVAC) systems are integral to maintaining indoor comfort. These systems comprise intricate components, and among them, service valves play a…

Refrigerants

Understanding R404A Suction Pressure

Posted on December 14, 2023 by Jack

R404A, a hydrofluorocarbon (HFC) refrigerant blend, is a commonly used refrigerant in commercial and industrial refrigeration systems. Its performance is heavily dependent on maintaining proper…

TS-200/300

Thermo King TS 200/300 – Excessive Voltage Output

Posted on December 13, 2023 by Jack

12 Volt Alternators With Internal Regular Setting: When a Thermo King unit is installed on a truck, it is often connected to a truck battery.…

TS-200/300

Thermo King TS 200/300 – Alternator (Prestolite) Charging System Diagnostic Procedures

Posted on December 13, 2023 by Jack

Complete the following checkout procedure before replacing the voltage regulator or the alternator. When testing alternators use accurate equipment such as a digital multimeter and…

TS-200/300

Thermo King TS 200/300 Compressor Shaft Seal Change Procedure

Posted on December 13, 2023 by Jack

Thermo King recommends changing the compressor shaft seal when there is a major system interruption, such as component replacement or total loss of refrigerant charge.…

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