I have a new trane system - thermostat makes an annoying clicking sound every 10-15 minutes -

This alert popped up on a new system all of 4 months old. I do not have an answer to 80.01 error however with the error my system had completely shut down. I rebooted the thermostat (950 WiFi Com.) which did nothing. I then turned off power to the AC unit at my indoor breaker box for 1 minute and that did reset the AC and allowed the system to come back online.

Had error code 91 on Trane XL19i thermostat. Heat season on duel fuel system. Repair tech said board is bad ($963) and transducer ($1000). Unit is 3 ton 12 years old. Does it make sense to repair or put in a new unit?

It's a normal noise! When the liquid refrigerant becomes less pressurised, usually when the thermostat clicks off,, it still bubbles through the system until the pressure equalises.

Friend! All thermostat is calibrated to cut in and cut off at the end of - or + 1 degree end.
Example: If you set 23 degree, it will cut off in 21 degree and cut in @25 degree. So accordingly you set the temp.
Secondly, don't set temp near to your room temp.Minimum difference should be 3 degree. If your room temp 12 degree, set at least 15 degree for heat and if room temp 28, set at least 25 degree for cool.
Hope it's helpful?

if it is a mechanical thermostat the heat ant. does that on cheaper digital tstats it is set by span and on better stats like honeywell model 5000,6000,8000 series you set the cycle rate. what kind and model number is tstat

try replacing the batteries in the thermostat on your wall. probably has 2 AA's this may fix it if not may have bad or old wiring from tstat to main indoor system. when you had a trane installed did they change the air condition components only(likely) or did they put in new furnace, new wiring, new t-stat, a full install?

your trane heat pump energizes the reversing valve with O - orange y - is to turn on the unit make sure you have your orange wire hooked up and the tstat programming set to heatpump otherwise your reversing valve might be bad

Depending on the age of your Trane unit. The fan relay has a time delay. This is a solid state board on the relay. Most of the time they stick on or off. Check for loose wires. But start with relay.

OK. Here is a Trane Weathertron BAYSTAT240 thermostat wiring picture. This heat pump w/ electric (emergency) heaters is running right now. Notice the G terminal has green wire, the R terminal has red wire, the white wire is jumpered from W to X2, etc. The black wire loop you see in the center hole is unconnected.


This unit is adjusted by leveling the base - loosen the screw to the left of "R" and the one to the right of "F". Twist the base clockwise to RAISE the indicator. This makes the mercury in the switch turn ON at a different temperature. Remember to tighten those 2 screws again.

You will have to experiment several times to make the unit read exactly right. If the tech installed the base exactly level, the unit would read right (it says here).

Your second stage heat check the dip switches on the board and the wires to the proper two stage heat t-stat.