To Next PageTo Next PageHow to unlock the keypad on my Honeywell Thermostat?
If the keypad on your Honeywell Thermostat is not responding, it might be because the key lock is activated. To remove the key lock, press and hold the specified keys together for a few seconds.
What to do if my Honeywell TB3140B/U is not cooling?
If your Honeywell Thermostat isn't cooling, even with the correct set point, the cooling mode might not be active. Use the key to set the mode to Cooling. Ensure the set point is lower than the room temperature and that the Cooling Valve icon is displayed. After making these adjustments, wait to see if the system starts cooling.
Why is my Honeywell TB3140B/U Thermostat not heating properly?
If your Honeywell Thermostat is not heating despite the correct set point, the heating mode may not be activated. Use the key to set the mode to Heating. Check that the set point is higher than the room temperature and that the Heating Valve icon is displayed. Give the system some time to start heating after these adjustments.
What to do if I forgot my Honeywell TB3140B/U password?
To recover a forgotten password on your Honeywell Thermostat: Contact your system administrator to get the Parameter Menu Password from the communication line. Alternatively, press the specified keys, then press and hold other specified keys together to perform a factory reset.
General| Programmable | Yes |
|---|---|
| Power Source | Hardwired |
| Voltage | 24V |
| Weight | 0.5 lbs |
| Programmability | 7-day programmable |
| Stages | 1 |
| Compatibility | Single-stage heating and cooling systems |
Important safety warnings regarding authorized service, power supply, and circuit breakers.
Instruction to switch off the power supply before starting the installation.
Instruction to connect wires according to the provided wiring diagram.
Powering on the thermostat to start the wall module and initiate operation.
Wiring diagrams for the TB3140 series for 2-pipe and 4-pipe fan coil units.
Wiring diagrams for the TB3240 series for 2-pipe and 4-pipe fan coil units.
Important note about circuit breaker protection and isolating NTC/dry contact cables.
Covers mode selection, time selection, schedule operation, and key lock.
Solutions for systems not cooling or continuously overcooling.
Solutions for systems not heating or continuously overheating.
Addresses keypad unresponsiveness and forgotten passwords.
Explains the process of setting a 4-digit pin during first installation or reset.
How to enter the configuration menu by holding specific keys.
Explains the different functions for P32, including external sensors and contacts.
How to select between valve-independent and valve-dependent fan control.
Explanation of hysteresis and dead zone settings for heating and cooling modes.
Steps to perform a factory reset using key combinations.
Details the alarm for onboard sensor errors and its impact on outputs.
Covers alarms for external or changeover sensor issues and how to disable them.
Configuration of setpoint limits and what is displayed on the main screen.
Configuration for fan coil type, universal input, and changeover temperatures.
Settings for auto mode, dead zone, hysteresis, and fan/valve control selection.
Standard MS/TP configurations for MAC address, loop number, and baudrate.
Lists analog value registers for TB3140x, including Mode, Fan Speed, and Set Point.
Covers registers for Changeover Temperature, Mode Change Delay, Dead Zone, Hysteresis.
Registers for Mode Change Delay, Dead Zone, Hysteresis, Fan Stage Change Delay, Fan Off Delay.
