In this month’s troubleshooting situation, we’re taking you to a school, but not to the equipment room of the main building. Instead, it’s a modular classroom (similar to a double-wide manufactured ...

In this month’s troubleshooting situation, the equipment that needs servicing is a split system and the refrigerant flow control is handled via an EEV (Electronic Expansion Valve, shown in Figure One, ...

Effective troubleshooting is a multifaceted exercise in diagnosis and deliberation, analysis and action. Here's a walkthrough you can use to make sure you've covered every angle -- no matter the ...