What to do for 'USB Malfunction' on Johnson Controls Controller?
If the Johnson Controls Controller displays 'USB Malfunction', try inserting and using the USB drive again. If that doesn't work, try a new USB drive. If problems persist, order replacement units and return the affected devices to Johnson Controls under the RMA program. This issue occurs when a USB drive has malfunctioned and drawn more than the maximum allowed current.
Why is my Johnson Controls Controller showing 'Zone Temperature Too Hot'?
If the Johnson Controls Controller shows 'Zone Temperature Too Hot', verify that the TEC and the RTU cooling are enabled and functioning. This issue occurs when the zone temperature increases above the configured Zone Temp High Limit.
What causes the 'Zone Temperature Too Cold' error on a Johnson Controls Controller?
If the Johnson Controls Controller displays 'Zone Temperature Too Cold', verify that the TEC and the RTU heating are enabled and functioning. The problem is that the zone temperature decreased below the configured Zone Temp Low Limit.
How to troubleshoot 'Supply Fan Fault' on Johnson Controls Controller?
If the Johnson Controls Controller displays 'Supply Fan Fault', verify that the supply fan is operating when turned on. Also, verify that the supply fan status wiring is connected correctly. This issue occurs when the supply fan status configured for either BI1 or BI2 has not proved within the configured Fan Alarm Delay.
Why is my Johnson Controls Controller showing 'Cooling Ineffective'?
If the Johnson Controls Controller displays 'Cooling Ineffective', verify that the cooling elements on the rooftop are functioning correctly. The cause is that the supply air temperature has not decreased below the configured Supply Air Temperature Alarm Offset while cooling has been active for at least the Supply Air Temperature Alarm Delay.
What does 'Heating Ineffective' mean on my Johnson Controls Controller?
If the Johnson Controls Controller displays 'Heating Ineffective', verify that the heating elements on the rooftop are functioning correctly. This happens because 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.
How do I fix 'Supply Fan Runtime Limit Extended' on my Johnson Controls Controller?
If the Johnson Controls Controller displays 'Supply Fan Runtime Limit Extended', service the supply fan and reset the supply fan runtime. This occurs because the supply fan runtime exceeds the configured supply fan runtime limit.
Why is the temperature displayed lower than actual on Johnson Controls Controller?
If the Johnson Controls Controller displays 'The temperature displayed is lower than the actual room temperature', seal any holes behind the TEC to reduce drafts. If air is being forced through the TEC from a nearby vent, move the location of the TEC or change the venting to prevent air from being forced through the TEC. This issue can happen because cold air drafts enter the back of the TEC, or air is being forced through the TEC from a nearby vent.
What to do if Johnson Controls Controller shows 'Internal Sensor Fail'?
Order replacement units and return the affected devices to Johnson Controls under the RMA program. This is due to an internal sensor failure on the TEC.
What does 'Dehum Unavailable' mean on a Johnson Controls Controller?
If the Johnson Controls Controller displays 'Dehum Unavailable', order replacement units and return the affected devices to Johnson Controls under the RMA program. This is because dehumidification is unavailable due to a failed zone humidity sensor or an unreliable humidity reading.
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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