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.
What to do if my Johnson Controls Thermostat displays 'Fan Lock'?
If your Johnson Controls Thermostat displays 'Fan Lock', inspect the equipment to ensure the fan functions. Check sensor functionality with an ohmmeter, and verify the wiring to the TEC. Reset the fault by entering the menu, selecting 'Fault Status', and then selecting 'Fan Lock'. If the problem persists, order replacement units and return the affected devices to Johnson Controls under the RMA program.
How to troubleshoot 'Humidity Unreliable' on my Johnson Controls Thermostat?
If your Johnson Controls Thermostat displays 'Humidity Unreliable', and the zone humidity source was the onboard sensor, contact Johnson Controls product sales and support. If the source was a BAS, check that the BAS is online and providing the TEC with the humidity reading. If removal of the BAS mapping was intentional, reset sensors through the menu.
How to fix a 'USB Malfunction' error on my Johnson Controls Thermostat?
If your Johnson Controls Thermostat displays 'USB Malfunction', try inserting the USB drive again, or try a new USB drive. If problems persist, order replacement units and return the affected devices to Johnson Controls under the RMA program.
What to do if my Johnson Controls Thermostat displays Cooling/Heating Unavailable due to Control Mode?
If your Johnson Controls Thermostat displays 'Idle' with a 'Cooling Unavailable' or 'Heating Unavailable' status, and the Control Mode is set incorrectly, change the Control Mode to 'Auto' or 'Heating' if it requests heating, or to 'Auto' or 'Cooling' if it requests cooling.
What to do if my Johnson Controls Thermostat displays 'Heating Ineffective'?
If your Johnson Controls Thermostat displays 'Heating Ineffective', verify that the heating elements on the rooftop are functioning correctly.
What to do if my Johnson Controls Thermostat displays 'Cooling Ineffective'?
If your Johnson Controls Thermostat displays 'Cooling Ineffective', verify that the cooling elements on the rooftop are functioning correctly.
How to troubleshoot a 'Supply Fan Fault' on my Johnson Controls Thermostat?
If your Johnson Controls Thermostat displays 'Supply Fan Fault', verify that the Supply Fan is operating when turned on and that the Supply Fan Status wiring is connected correctly.
How do I fix the slow temperature change on my Johnson Controls TEC3000 thermostat?
To fix the issue where the TEC3000 zone temperature doesn't change fast enough on your Johnson Controls Thermostat, select 'Control Setup > Tuning > Equipment Size > Oversized'.
How to adjust unoccupied mode temperature swings on my Johnson Controls Thermostat?
If the zone space temperature increases or decreases too much when the unit is active in unoccupied mode on your Johnson Controls Thermostat, decrease the 'Unoccupied Off Delay' parameter from 10 minutes to a more appropriate time for the equipment configuration.
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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