If defrost isn’t working, something in the chain is broken. This step-by-step approach shows you exactly where to look and what to test.

In this troubleshooting situation, the equipment is a package unit heat pump, and the customer has called for service because although they have the thermostat set at 74° F, the temperature in the ...

Insulin pumps and other diabetes technology equipment can break or stop working, so it’s important to have an emergency plan in place. This plan may include ordering a backup device or temporarily ...