Tech Challenge

A commercial rooftop utilizing R-410A with a TXV feed device has a customer complaint of insufficient cooling. The symptoms confirm […]

A frozen food case utilizing HFC R-404A with a TXV metering device (and receiver) has a customer complaint of “warm […]

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?

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

May’s Tech Challenge Question – What are the “possible causes” with the following measured conditions on this field service check sheet?

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

March’s Tech Challenge Question – What are the “possible causes” with the following measured/calculated conditions on this field service check sheet?

The answer to the ACCA HVAC Blog January’s Tech Challenge is here! Check out the answer to see if you were able to find the answer!

January’s Tech Challenge Question – What are the “possible causes” with the following measured/calculated conditions on this field service check sheet? Check back in February for the answer.

The answer to the ACCA HVAC Blog November’s Tech Challenge is here! Check out the answer to see if you were able to find the answer!

November’s Tech Challenge Question – What are the possible causes of the following measured conditions in this field service check sheet? Check back in December for the answer.

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

A commercial rooftop utilizing R-410A with a fixed feed device has the customer complaint of “no cooling.” The symptoms confirm […]