Repair Information - Johnson Controls TEC2104-3 Installation Instructions Manual

Repair Information

If the TEC2104-3 Thermostat fails to operate within its
specifications, see Table 5 for troubleshooting details
and Table 6 for alarm messaging. For a replacement
thermostat, contact the nearest Johnson Controls
representative.
Table 5: Troubleshooting Details
Error/Trouble Possible Cause
Condition
Thermostat Cycles Two or more controllers have the same address.
Online and Offline
There are Y or T taps on the N2 Bus, or the
repeater has lost power or is wired incorrectly.
Thermostat Does Two or more controllers have the same address.
Not Come Online
The N2 Bus contains too many devices.
The thermostat does not have power.
The N2 cable runs are broken.
The thermostat device type is incorrect.
N2 Bus is Offline The wiring on the N2 Bus is broken.
No point mapping has been entered.
Table 6: Display Messages
Display Function
Frost ON Indicates that heating is energized by the low limit frost protection room temperature setpoint.
Service Indicates that there is a service alarm in accordance with the programmable Digital Inputs (DI1 or DI2).
Filter Indicates that the filter(s) is dirty in accordance with the programmable Digital Inputs (DI1 or DI2).
TEC2104-3 N2 Networked Multi-Stage Economizer Thermostat Installation Instructions
Solution
Change each duplicate address to a unique
number.
Refer to the N2 Communications Bus Technical
Bulletin (LIT-636018) .
Change each duplicate address to a unique
number.
Do not exceed the maximum number of devices
allowed on the N2 Bus per supervisory controller
limitations.
Apply power to the thermostat.
Locate the break and correct the wiring.
Change the thermostat device type to VND.
Repair the wiring.
Define the BAS dataset.
15