Technical Services Newsletter Archive

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We understand that keeping up with warranty policies in our industry can be challenging. Our team of knowledgeable Warranty Experts are standing by to help guide our dealers through all their warranty issues with quality and also expert customer service.

Group of eight people standing by a stone waterfall overlook on a sunny day
Yellow gas pipes with red and white gauges and a pair of pliers on a work surface
By Deanna Lassiter September 14, 2023
Recently we have been getting calls from techs about NIMS installations. One caller recently said he had an infinity system with an “infinity” water source heat pump with a no cool call (as told by the homeowner to the tech). The infinity interface was giving a 179 code, or no communicating with the outdoor unit.
Two hose pressure gauges beside a red valve and green-handled pliers on a work surface
By Deanna Lassiter September 14, 2023
With technology advancing more and more every day, the days of relays to contactor style control are behind us. Carrier units with MBB boards have sensors everywhere from the suction pressor to Current sensors on the compressor. This does have a great benefit to having a unit in which you can attach one set of remote
Plumbing tools and pipe fittings with a red valve and wrenches on a work surface
By Deanna Lassiter September 13, 2023
The most current 24 and 26 SEER Carrier GREENSPEED and Bryant EXTREME offer a few upgrades from the original versions. Now, they have a capacity range from 25% to 100% and added a discharge pressure transducer to the ensemble of inputs for more protection and adjustment ability. Similar to the original Greenspeed
Blue-toned scuba diving gear with a regulator, gauges, and fins on a table
By Deanna Lassiter August 10, 2023
On 30RA to 30RB, this code can be a massive headache. With all the different options for these chillers can come with this alarm can send you down many different paths. We will break down a couple of basics to look at first to get the chiller back online. If this code still presents the chiller will not run.
Black scuba or dive gear with a damaged, melted-looking regulator and hoses in a wet setting
By Deanna Lassiter August 10, 2023
You may have seen Code 69 while receiving a service call to a 25VNA8-24VNA9 2 thru 5 ton. Many times we get a call from a tech stating “I think I have a bad board, I just want to verify with you guys!” Many times it is a bad board; or is it?
Close-up of a purple Carrier HVAC unit with orange heating fins and a digital temperature reading of 86.8°F
By Deanna Lassiter August 10, 2023
What is superheat? What is sub-cooling? In this article we will review what refrigeration is, how it works, and some of the terminology. Hopefully, it will help you troubleshoot problems within the basic refrigerant circuit, and then apply these skills to more complex systems.
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