Bryant 2 stage ac code#72 hi stage thermal cutoff,what does that mean

Code 72 usually has to do with start components. Either run or start capacitor could be bad, or start relay could be bad.

https://www.youtube.com/watch?v=FQisFmMtAis

You probably need to get a service tech out. Here is the manual on the unit Carrier 25HNA6 Installation Instruction

My guess is a sensor or board, make sure coils are clean.

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I'm assuming this is an Infinity system. If so, it is an awesome, but complicated machine. If the PDF I have is correct to your machine, 72 is a high stage compressor thermal lockout in the history. This may be caused by a faulty start assist kit(potential relay), or internal overload trip in compressor. This should be addressed by a qualified and experienced service tech. I know these machines pretty well and still have so much to learn about them. So if you have no experience with it do not attempt to repair. You can clear thus code in the thermostat. It should be a "history" code, meaning it happened, but is not an issue that caused it to shut down. Hold the advanced button for about 10 secs and you'll access the installer/service mode. Locate fault history and then clear all codes. Just be advised, these codes help me see the history of operation and in turn, help me diagnose problems when I am to repair the machine. Hope this helps!

timed cycle mean dryer not on sensor dry mode. check wire connection on moisture sensor bars (i think you forget to put 2 wire connector put together). when you use other cycle dryer use moisture sensor to dry cloths so sensor not working dryer will stop in 5 minutes or so because dryer think there are no wet cloths to dry. hope this help you.

Whirlpool Thin Twin, dryer thermal cutoff failed twice - Appliance ...

forum.appliancepartspros.com > Appliance Repair Help > Dryer Repair

Oct 12, 2011 - 6 posts - ‎2 authors
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Your t-stat should be set up so that the furnace is the second stage heat and also emergency heat. First stage (heat Pump comes on) sometimes they use Time to start 2nd stage, sometimes they use outdoor temp and this all bepends how bryant has set it up, without a model # I cannot tell you but send it and i will look in somebooks i have to tell you.

Hi, what is happening is the unit is shutting off on high head pressure from the sound of it. Bryant units are top of the line! What you need to do is shut the main power off to unit. I dont no if you have a split system 2-part with a indoor unit and outdoor unit or a package unit all in one. It really makes no difference. Go to the outdoor coil, which is the condenser coil. Take a good water hose and wash this coil very good all around and inside where the fan motor is. These units are made for outdoor use but don't spray directly on the controls. Be careful not to mash the fins with to much pressure.If the fan motor outside is running up to a good speed, this will take care of the high head pressure, I know for a fact. Let me know the out come. If by some reason it does not cure this, we will go into it further. I will be waiting to hear from you.
Sincerely,
Shastalaker7

Single stage heat pump. But you must have a two stage tstat for backup electric heat. You single stage cool two stage heat. The second stage brings on the electric heat in case the heat pump can not keep up. Wiring goes r y w1 on most heat pump tstats are switchover valve or o terminal. W2 second stage heat or emergency heat. g is fan c is common terminal.Rus

Either your element is out our your thermal cutoff.  Check your element for continuity if it is open, replace the element.  If not check the thermal cutoff which is on top of the element.  If the thermal cutoff is open you will also need to replace the operating thermostat and Hi limit thermostat.  The high limit is on the element below the thermal cutoff, and the opperating thermostat is on the exhaust duct.