How to resolve the 'Open Window' alert on my Johnson Controls Thermostat?
If your Johnson Controls Thermostat displays 'Open Window', close the window to resume control. Check sensor functionality with an ohmmeter, and verify the wiring to the TEC. If the problem persists, order replacement units and return the affected devices to Johnson Controls under the RMA program.
How to troubleshoot a 'Supply Temp Fail' error on a Johnson Controls TEC3612?
If your Johnson Controls Controller displays 'Supply Temp Fail', the external supply temperature sensor is either disconnected or has failed. You can try these steps: First, check the sensor wiring. If intentionally disconnected, reset the sensors by going to the menu, then Control Setup, and selecting Inputs. If the problem continues, order replacement units and return the affected devices to Johnson Controls under the RMA program.
How to fix an unresponsive touchscreen on my Johnson Controls Thermostat?
If the touchscreen on your Johnson Controls Thermostat is unresponsive, reboot the controller. Avoid touching the controller or display within 5 mm of the display when power is applied to the controller. Do not interact with the controller until the home screen displays.
What does 'Supply Fan Fault' indicate on my Johnson Controls Controller?
If your Johnson Controls Controller displays 'Supply Fan Fault', it means the Supply Fan Status configured for either BI1 or BI2 hasn't been proven within the configured Fan Alarm Delay. Verify that the supply fan is operating when turned on, and check that the Supply Fan Status wiring is connected correctly.
What does 'Changeover Fail' mean on my Johnson Controls TEC3612 Controller and how to fix it?
If your Johnson Controls Controller displays 'Changeover Fail', it indicates that the Supply Temperature Sensor is either not installed, has failed, or has been disconnected. As a result, the TEC can't detect the changeover mode for cooling or heating. You can follow the same troubleshooting steps as for a 'Supply Temp Fail' alarm.
Why is 'Dehum Unavailable' on my Johnson Controls Controller?
If your Johnson Controls Controller displays 'Dehum Unavailable', it means dehumidification is unavailable because the zone humidity sensor has either failed or the humidity reading isn't reliable. If the zone humidity source was a BAS, check the BAS to ensure it's online and providing the TEC with the humidity reading. If you intentionally removed the BAS mapping, reset the sensors through the menu. If the problem continues, you may need to order replacement units and return the affected devices to Johnson Controls under the RMA program.
What does 'Heating Ineffective' mean on my Johnson Controls TEC3612 Controller?
If your Johnson Controls Controller displays 'Heating Ineffective', it means the supply air temperature hasn't increased enough while heating has been active for the specified delay. To fix this, verify that the heating elements on the rooftop are functioning properly.
Why is the temperature displayed lower than actual on my Johnson Controls TEC3612?
If the temperature displayed on your Johnson Controls Controller is lower than the actual room temperature, cold air drafts may be entering the back of the TEC, or air may be forced through the TEC from a nearby vent. To fix this, seal any holes behind the TEC to reduce drafts, or move the location of the TEC or change the venting to prevent air from being forced through the TEC.
How to resolve a firmware mismatch on my Johnson Controls Thermostat?
To resolve a 'Firmware Mismatch' on your Johnson Controls Thermostat: First, upgrade the TEC3000 to the latest released version. Then, upgrade the TEC3000 to the current version again. If the previous downgrade has not completed because the previous version is no longer supported, reboot the TEC3000 to clear the fault.
How to fix rapid cycling with PID on my Johnson Controls Thermostat?
If the staged equipment cycles too rapidly or slowly on your Johnson Controls Thermostat when the PID is running, it may be due to the control band around the setpoint being set incorrectly. Verify that the equipment's minimum on/off times are set correctly. If the default deadband doesn't provide the required temperature control, set 'Temp Control Setup' to 'Deadband Override' and adjust the 'Deadband' parameter to your preferred value.
Remove the security screw using a specific tool before opening the cover.
Position the mounting base and mark holes for secure wall attachment.
Fasten the mounting base to the wall using user-supplied screws.
Always disconnect power before electrical connections to prevent electric shock.
Ensure wiring connections comply with all applicable local, national, and regional regulations.
Table 8 lists common faults, their probable causes, and solutions.
Fault indicating failure of the external zone temperature sensor.
Fault indicating failure of the external supply temperature sensor.
Fault indicating lost or uninstalled factory calibration data.
Fault when the supply temperature sensor for changeover fails.
Fault indicating all zone temperature sources are unreliable.
Fault caused by incomplete firmware upgrade or downgrade.
Fault due to USB drive malfunction or excessive current draw.
Fault indicating heating elements are not functioning correctly.
Controller displays Idle due to changeover issues affecting cooling or heating availability.
Staged equipment shutting off unexpectedly when PID is active.
Staged equipment cycling too fast or too slow with PID active.
Zone temperature response is slow compared to a calibrated sensor.
Error occurs when attempting to back up controller settings.
Controller cannot access or read data from the USB drive.
Online icon missing for networked controller indicates communication issues.
Supervisory status offline for wireless models indicates no connection to supervisory system.
Touchscreen is unresponsive to touch input.
General| Brand | Johnson Controls |
|---|---|
| Model | TEC3612 |
| Category | Controller |
| Language | English |
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