Author: Dick Shaw

A medium temperature beverage cooler utilizing R-134a with a TXV metering device and liquid receiver has a customer complaint of […]

A reach-in cooler utilizing R-134a with a capillary tube feed device has a customer complaint of warm product. The symptoms […]

A medium-temperature cooler utilizing R-134a with a TXV metering device with the receiver has a customer complaint of “warm.” The symptoms confirm warm product, and the condensing unit is cycling frequently on the LPC (low-pressure control). What are the “possible causes” with the following measured conditions on this field service check sheet? Find out here!

A residential split A/C system utilizing R-410A with a fixed orifice metering device has a customer complaint of “insufficient cooling.” The symptoms confirm that the thermostat is not satisfied, and the condensing unit and blower are running continuously. What are the “possible causes” with the following measured conditions on this field service check sheet? Find out here!

Share this challenge with your staff and see who can figure out the diagnosis first. A frozen food case utilizing […]

Share this challenge with your staff and see who can figure out the diagnosis first. A frozen food case utilizing […]

The answer to the ACCA HVAC Blog July Tech Challenge is here! Check out this blog to see if you were able to find the answer!

July Tech Challenge Question: What are the “possible causes” with the following measured conditions on this field service check sheet?