What to do when the Johnson Controls Fan displays a 'Supply Fan Fault'?
If your Johnson Controls Fan displays a '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. First, verify that the supply fan is operating when turned on. Also, verify that the Supply Fan Status wiring is connected correctly.
What does it mean when the humidity reading is unreliable on a Johnson Controls Fan?
If the humidity reading on your Johnson Controls Fan is unreliable, it means the zone humidity reading was once reliable but has now failed. If the source of zone humidity was the onboard sensor, contact Johnson Controls product sales and support. If the source was a BAS, check the BAS to ensure it's online and providing the TEC with the humidity reading. If the BAS mapping was intentionally removed, reset the sensors through the menu.
What causes a 'Board Mismatch' error on a Johnson Controls Fan?
A 'Board Mismatch' error on your Johnson Controls Fan means the baseboard and CPU board are paired incorrectly, and an error message will appear on the TEC indicating the model number of each board. Match the baseboard to its corresponding CPU board. Consult Figure 6 and Table 3 for pairing information.
Why does my Johnson Controls Controller display Idle with Cooling/Heating Unavailable due to Changeover?
If your Johnson Controls Controller displays 'Idle' with a Unit Status of 'Cooling Unavailable due to Changeover' (despite being above the cooling setpoint) or 'Heating Unavailable due to Changeover' (despite being below the setpoint), it indicates that the two-pipe fan coil/VAV system does not have a changeover sensor and switch connected, or the sensor/switch has failed. To resolve this: 1. Check the wiring of the supply temperature sensor/switch. 2. Verify that the changeover is set up correctly for the type of sensor attached (sensor or switch).
What to do if my Johnson Controls Controller displays Changeover Fail?
If your Johnson Controls Controller displays 'Changeover Fail', the Supply Temperature Sensor is not installed, has failed, or has been disconnected, and the TEC can no longer detect changeover mode to cool or heat. Follow the same steps as for a Supply Temp Fail alarm to resolve this.
What to do if my Johnson Controls Controller displays Calibration Corrupt?
If your Johnson Controls Controller displays 'Calibration Corrupt', it means factory calibration data is lost or not installed. Order replacement units and return the affected devices to Johnson Controls under the RMA program.
Why is heating ineffective on my Johnson Controls Controller?
If heating is ineffective on your Johnson Controls Controller, it means the Supply Air Temperature has not increased above the configured Supply Air Temperature Alarm Offset while heating has been active for at least the Supply Air Temperature Alarm Delay. Verify that the heating elements on the rooftop are functioning properly.
What to do if the Johnson Controls Fan displays 'Calibration Corrupt'?
If your Johnson Controls Fan displays 'Calibration Corrupt,' it means the factory calibration data is lost or not installed. Order replacement units and return the affected devices to Johnson Controls under the RMA program.
What to do if the Johnson Controls Fan displays 'Zone Temp Unreliable'?
If your Johnson Controls Fan displays 'Zone Temp Unreliable,' it means all sources of zone temperature, including the onboard sensor, are unreliable. Order replacement units and return the affected devices to Johnson Controls under the RMA program.
What to do if my Johnson Controls Fan displays 'Controller Fault'?
If your Johnson Controls Fan displays 'Controller Fault', it means the controller has detected an internal fault that it cannot recover. Order replacement units and return the affected devices to Johnson Controls under the RMA program.
Guidelines for selecting the best placement for controller performance.
Step-by-step guide for physically installing the thermostat controller.
Warnings about shock hazards, property damage, and ESD during wiring.
Instructions for wiring terminals and setting the bus end-of-line switch.
Guide for using the USB port for upgrades, backups, and restoring settings.
Lists common faults, their causes, and recommended solutions.
Detailed steps to diagnose and fix specific operational problems.
General| Brand | Johnson Controls |
|---|---|
| Model | TEC3000 Series |
| Category | Thermostat |
| Language | English |
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