Trane Thermostat Error Codes - Troubleshooting Guide - HVAC BOSS (2024)

FAQs

How do you clear the error code on a Trane thermostat? ›

Suggested repair: In most cases, the issue can only be resolved by resetting the unit so switch off power to both inside and outside units to have the system reset. If the problem persists, check if the low pressure switch is faulty- it causes most of the stubborn 79 error codes.

What Does E4 Mean on a Trane Thermostat? E4 error code means that the input voltage is out of range. It looks like it is either lower than 18VAC or higher than 32 VAC. You might have to check the thermostat's voltage.

Sensor is not communicating (E2) Normal for sensor configured with GRP-NET 0-0. Verify that the sensor has the correct group (GRP) and network (NET) addresses. Verify that the sensor is within radio range. If the sensor has previously joined the network, verify that WCIs in range are powered up.

“E-1” in the display means the test strip may be damaged or the code key is incorrect. Remove and reinsert the test strip. If the message reappears, turn off the meter and make sure the code key is properly inserted.

An E2 error is shown when no contact is detected between the motor and the valve pin. To resolve this, please make sure that the mounting bracket and the adapter (if used) are attached properly to the radiator. Restart and remount the Smart Radiator Thermostat to restart calibration.

To reset an error 8, turn off the air conditioner and disconnect the breaker. Wait for 3 minutes and switch it on again. If you do this and the error code shows up, you will need to troubleshoot the unit further to find the problem.

CODE: F4. RESULT: No. D Indoor unit coil outlet temperature sensor or connector of sensor is defective.

Turn off the power and open up the control panel to access the reset buttons on these models. Next, lift the cover to the blower compartment, and you should see the reset button sitting next to the blower motor and blower wheel.

What does a blinking light mean on a furnace? ›

Flashing lights could indicate that your thermostat is not sending a signal to the furnace. This problem can be caused by an issue with the wires in your walls, or it might just be that there is a loose wire connection somewhere.

The red blinking light for your Trane XR90 furnace indicates that your unit was shut off due to a problem. Your system is currently locked out of its normal operation or ability to function. You need to monitor the frequency of the flashes and their speed.

The E2 error is displayed on the CID when the weapon detects that the date/time is off. This can occur if the battery has been left out of the device for an extended period of time or that the device has not been connected to Evidence Sync for an extended period of time.

“E2” – Low Pressure: The pressure of the compressor is too low. The 'Error' LED will be on. Solution: Clean filters & coils. Verify Power. Check filters evaporator/condenser.

F2: This error code shows up only when there is an issue with the compressor is out of step.

If the E1 error code appeared as a reminder to clean the air filter, turn off the unit, and then open the front panel and remove the filter. Clean it with soap and water and let it dry before replacing it. If you can't remove all the dirt and grease it has collected, it's time to replace it.

E3 Error Code Air Conditioner, How to Solve E3 Error in Air ... - YouTube

You can try removing the thermostat from its holder, unplug the comm cable, wait 2 minutes, replug, make sure the CCC2 is OFF, do the Reset, turn ON and check to see if all units are available.

2022. If your air conditioner displays E1 in the display panel and won't turn on, it means that the Room Thermistor (a device connected to the thermostat that detects room temperature) is shorted or defective, and you need to have your air conditioner serviced.

Before installing you must verify that your hose is rated at the correct BTU's or this can cause your water heater to throw an E1 error code. This is because your tankless water heater is starving for gas.

What does E1 mean on Carrier thermostat? ›

For Carrier AC units, the E1 error code indicates something wrong with your indoor/outdoor units' communication.

The E4 fault indicates that the unit is going into defrost mode, and somehow it causes your unit to malfunction, and the result is the system gets too cold. There is the chance that a defective temperature sensor causes your AC to go into defrost mode.

When you see an E5 error on your air conditioner it means that the water collection tank is full. So the solution to the problem is to drain the water collection tank. This is something that is easy to do yourself without needing to call a professional AC repairer.

The E8 error code means that your air conditioner is operating under extremely high heat and humidity and that it is having an impact on its performance.

H8 indicates that the tray is full and it needs to be manually drained. 2) Find the drain plug at the rear bottom of the portable air conditioning. 3) Pull the drain plug out and allow the water to drain. 4) Wipe dry the machine, your hands and the floor area then plug the machine back to run it.

E9. Fault: High or Low pressure tripped (Note: Some models have discharge sensor, which will also give the same fault code.)

This is caused when the pressure of the system is too low for the unit to operate. A quick test to perform in this case, is to set the unit to the maximum heating temperature, run it for 15 minutes and check the larger pipe coming out of the outdoor unit.

All you have to do is to find the correct breaker and turn it on again. Of course, you need to turn it off completely first, and then turn it on again before power can be restored. If there are no problems, check the fuses. The fuse may blow, interrupting the AC 120 power supply to the device.

Why is my Trane thermostat not heating? ›

ANSWER: Your thermostat may not be calibrated properly or set too low. Make sure your thermostat is set to heat. Try setting the temperature 2 to 4 degrees above room temperature. ANSWER: Clean or replace your filters.

Locate the reset button on the furnace and press it to reset the furnace. It is usually located inside the blower compartment on the side of the blower motor. Be cautious as the housing may be hot. If the button is popped up, press it down.

High Temperature Limit Lockout

If the error light on the Trane is flashing four times, lower the thermostat to just above air temperature, and press the red "Reset" button. If the problem occurs again, disconnect power, and contact a qualified service professional for help.

American Standard furnace blinking red light

There is an issue with the pressure switch. There is an issue with the limit switch. There is a problem with the grounding or the polarity. The gas valve is faulty and needs to be replaced.

Have you ever looked at your furnace and thought what do 3 flashes on American Standard furnace mean? This error occurs when the combustion air pressure switch that monitors the flow of air through the vent system fails to close while the induced draft motor is operating.

Decipher two LED flashes to mean the draft blower is not working, or your furnace has a short in the pressure switch circuit. Turn off the furnace power and repair a short or replace the pressure switch. 4.

FLASHING RED—A flashing red signal light means exactly the same as a stop sign: STOP! After stopping, proceed when safe and observe the right-of-way rules. RED ARROW—A red arrow means STOP until the green signal or green arrow appears. A turn may not be made against a red arrow.

Flashing Red–A flashing red traffic signal light means “STOP.” After stopping, you may proceed when it is safe. Observe the right-of-way rules. Solid Yellow–A yellow traffic signal light means “CAUTION.” The red traffic signal light is about to appear.

If your furnace won't turn on, it is usually either a problem with the circuit breaker or with the thermostat. Check that the circuit your furnace is connected to is on, and if not, simply restore the power.

A Trane error code 126 indicates that there is a communication malfunction between your HVAC unit and the thermostat; in a Trane 950, the code would mean a low-temperature lockout. In any case, the best way to deal with the issue is to reset the whole system.

How do I fix e8 error? ›

To reset an error 8, turn off the air conditioner and disconnect the breaker. Wait for 3 minutes and switch it on again. If you do this and the error code shows up, you will need to troubleshoot the unit further to find the problem.

System idle means system is not on. Waiting means the t-stat is calling for heat and cool and the system is in 3-5 min wait period (5 min normal). As as as system operation does not sound like it is working right. I would call the installers back out to review over set up and wiring to ensure hooked up properly.

Air Conditioning not turning on ? The AC float switch might be the problem

The answer is no, the Trane thermostat does not have batteries. The Trane thermostat is powered by your home's electricity and does not require batteries.

The E8 error code means that your air conditioner is operating under extremely high heat and humidity and that it is having an impact on its performance.

F8: This error code shows up only when there is an issue with the outdoor ambient temperature sensor.

Turn off the power and open up the control panel to access the reset buttons on these models. Next, lift the cover to the blower compartment, and you should see the reset button sitting next to the blower motor and blower wheel.

What is hold on Trane thermostat? ›

By pressing “Hold”, your thermostat will lock in the temperature it's currently at until you change it again. When you are ready for your normal schedule to resume, simply press the “Run” button and return to your typical programming.

How to Set Your Trane Thermostat to the Heating or Cooling Mode

Feel free to temporarily override your set schedule and adjust the temperature when needed. This override automatically cancels and resumes to normal programming.