Why can't I set the system setting to Heat on my Honeywell TB7100A1000 MultiPRO?
If you cannot set the system setting to Heat on your Honeywell Thermostat, it's likely because the System Type (ISU 0170) is set to Cool Only. Change the System Type (ISU 0170) to match the installed heating and/or cooling equipment.
Why is my Honeywell TB7100A1000 MultiPRO not turning on heating or cooling?
If your Honeywell Thermostat is not turning on the heating or cooling, it might be due to the thermostat's minimum off-time being activated. Wait up to five minutes for the system to respond. Also, ensure that the system selection is set to Heat or Cool, and verify that the system type selection in ISU 0170 is correct.
Why cooling does not turn on when 'Cool On' is solid on my Honeywell TB7100A1000 MultiPRO?
If your Honeywell Thermostat shows 'Cool On' but the cooling doesn't turn on, it could be due to cooling equipment failure. Check for 24 Vac at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the cooling equipment to find the cause of the problem. Also check for 24 Vac between the cool terminal (Y) and transformer common. If 24 Vac is present, the thermostat is functional, so check the cooling equipment. Another possibility is a loose or broken wire connection between the thermostat and cooling equipment. Check for 24 Vac between the cool terminal (Y) and transformer common. If voltage is not present, check the wire connection between the thermostat and the cooling equipment.
How to fix a Honeywell TB7100A1000 MultiPRO when the display does not come on?
If your Honeywell Thermostat display doesn't turn on, it could be due to a lack of power. Check for 24 Vac between C and Rc. Also, ensure that the AAA batteries are correctly installed and have sufficient charge.
What to do if my Honeywell TB7100A1000 MultiPRO is calling for heat or cool, but no heating or cooling is running?
If your Honeywell Thermostat is calling for heat or cool, but nothing is happening, the heating or cooling equipment might not be operating. In this case, check the wiring and ensure the correct system type is chosen in ISU 0170. You can also verify the equipment operation in System Test mode.
Why temperature settings do not change on my Honeywell TB7100A1000 MultiPRO?
If your Honeywell Thermostat's temperature settings are not changing, it could be due to reaching the upper or lower temperature limits. Check the temperature setpoints and modify ISU 0600 and 0610 as needed. Alternatively, the keypad might be fully locked. Check ISU 0670 to change the keypad locked options.
Why is 'Cool On' not in the display of my Honeywell Thermostat?
If 'Cool On' is not displayed on your Honeywell Thermostat, make sure the system setting is set to Cool and the temperature setting is below the room temperature.
Why heating equipment does not turn off and heat temperature setting is set below room temperature on my Honeywell TB7100A1000 MultiPRO?
If your Honeywell Thermostat is causing the heating equipment to not turn off, and the heat temperature setting is below room temperature, it's possible that the System Type (ISU 0170) is incorrectly set to Heat Pump. Ensure that the System Type (ISU 0170) matches the installed heating and/or cooling equipment.
Why is heating equipment running in the cool mode on my Honeywell Thermostat?
If your Honeywell Thermostat is causing the heating equipment to run in cool mode, it's likely that the System Type (ISU 0170) is set to Heat Pump, even though the heating equipment isn't a heat pump. To fix this, set the System Type (ISU 0170) to match your actual heating and/or cooling equipment.
What causes a Honeywell Thermostat heat pump to put out cool air in heat mode?
If your Honeywell Thermostat-controlled heat pump puts out cool air in heat mode and warm air in cool mode, the Changeover Valve (ISU 0190) might not be configured correctly. Set the Changeover Valve (ISU 0190) to match the changeover required by the installed heat pump.
General| Display Type | LCD |
|---|---|
| Programmability | 7-Day Programmable |
| Fan Modes | Auto, On |
| Hold Feature | Yes |
| Filter Change Alert | Yes |
| Weight | 0.6 lbs |
| Type | MultiPRO |
| Power Source | 24VAC |
| Compatibility | Heat Pump systems |
| Stages | Up to 2 Heat/1 Cool Heat Pump |
| Terminal Designations | R, C, W, Y, G, Aux |
| Changeover | Manual |
| Operating Modes | Heat, Cool, Off |
| Voltage | 24VAC |
Step-by-step guide to modify the thermostat schedule settings.
How to view the existing programmed schedule for a specific day.
Configure system and fan modes for HVAC operation.
Temporarily holds temperature until a set time or next scheduled period.
Changes temperature setting until the next period takes effect.
Sets temperature for a designated number of days.
Displays temperature from a single remote sensor.
Displays average temperature from multiple remote sensors.
Entire interface is locked and non-functional.
Specific keys or functions are locked.
Locks schedule and system changes.
Locks schedule, system, and fan changes.
Locks all settings except Holiday and Override.
Initial calendar setup during first power-on.
Configures the first two digits of the current calendar year.
Configures the last two digits of the current calendar year.
Configures the current calendar month.
Configures the current calendar date.
Sets thermostat to programmable or non-programmable mode.
Selects temperature display unit (Fahrenheit or Celsius).
Enables or disables automatic DST adjustments.
Sets the number of programmable periods per day.
Selects between 12-hour and 24-hour clock format.
Exits advanced settings and returns to the main screen.
To Next Page
