Honeywell T7350 User Manual (English)

Other manuals for Honeywell T7350

User Guide40 pages

Product Data40 pages

Installation Instructions16 pages

System Engineering44 pages

Guide Specifications4 pages

Quick Start Guide12 pages

Questions and Answers:

C
craig04Aug 22, 2025
How to fix a Honeywell T7350 display that won't come on?
- D
  David OnealAug 22, 2025
  If the display on your Honeywell Thermostat won't turn on, the thermostat might not be getting power. Check that the X terminal is connected to the system transformer and verify there's 24 Vac between the X and RH or RC terminals. If 24 Vac is missing: * Check if the circuit breaker is tripped and reset it if needed. * Check if the system fuse is blown and replace it if necessary. * Ensure the HVAC equipment power switch is in the On position. * Check the wiring between the thermostat and HVAC equipment, replacing any broken wires and tightening loose connections. If 24 Vac is present, continue troubleshooting.
C
Christopher MccoyAug 23, 2025
Why won't the heat come on with my Honeywell T7350 Thermostat?
- G
  gregoryhallAug 23, 2025
  If the heat isn't coming on with your Honeywell Thermostat, it could be due to several reasons. First, ensure the X terminal is connected to the system transformer and that there's 24 Vac between the X and RH terminals. If there's no 24 Vac, check the circuit breaker, system fuse, HVAC equipment power switch, and wiring. Also, the thermostat minimum off time might be activated, so wait up to five minutes for the system to respond. Lastly, check that the system selection is set to Heat or Auto. It's also possible that the DAT high limit has been reached, or OAT lockout is engaged. If the setpoints are correct, do nothing. Check HVAC equipment to ensure proper operation.
S
Samantha HillAug 25, 2025
Why is my Honeywell T7350 not cooling?
- M
  Mr. Jeffrey ClarkAug 26, 2025
  If the cooling isn't working on your Honeywell Thermostat, there could be a few reasons. First, check that the X terminal is connected to the system transformer and that there's 24 Vac between the X and RC terminals. If there's no 24 Vac, check the circuit breaker, system fuse, HVAC equipment power switch, and wiring. The thermostat minimum off time might be activated, so wait up to five minutes for the system to respond. Also, make sure the system selection is set to Cool or Auto. It's also possible that the DAT low limit has been reached, or OAT lockout is engaged. If the setpoints are correct, do nothing. Check HVAC equipment to ensure proper operation.
J
justinsimmonsAug 26, 2025
Why is my Honeywell Thermostat display not turning on?
- K
  kellyjonesAug 27, 2025
  The display might not be turning on because the thermostat isn't getting power. Check that the X terminal is connected to the system transformer and verify there's 24 Vac between the X and RH or RC terminals. If there's no 24 Vac, check the following: * Make sure the circuit breaker hasn't tripped, and reset it if it has. * See if the system fuse is blown, and replace it if needed. * Ensure the HVAC equipment power switch is in the On position. * Inspect the wiring between the thermostat and HVAC equipment, replacing any broken wires and tightening loose connections. If 24 Vac is present, continue troubleshooting.
W
wcollierAug 30, 2025
Why can't I change the temperature settings on my Honeywell T7350 Thermostat?
- J
  Jennifer SandovalAug 30, 2025
  If you cannot adjust the temperature settings, it could be due to these reasons: * You might have reached the upper or lower temperature limits. The heating limits are between 40° and 90° F (7° to 31° C), and the cooling limits are between 45° and 99° F (9° to 37° C). * Occupied setpoint temperature range stops may have been configured. Use a PDA to check and reconfigure the setpoint stops if necessary. * The keypad might be locked. If you see 'LOCKED' on the LCD when pressing a key, use a PDA (Set, Display) to unlock the keypad, or press both Run Schedule and Copy, then change the keypad lock level.
M
Michael WashingtonAug 31, 2025
Why is the Honeywell T7350 system indicator on, but no warm air is coming?
- K
  Kimberly CurtisSep 1, 2025
  If your Honeywell Thermostat isn't producing warm air when the heat indicator is on, consider these possibilities: * The system may not yet be calling for heat. Check for stage indicators (dots next to the system indicator); if none are displayed, the call for heat via relay hasn't been given yet. For T7350M models, check the MODHEAT percentage on the information screens; values of zero or 100 indicate an extreme signal from the terminal. * If you have conventional heating equipment, it might turn the fan on only after the furnace warms up. Wait a minute after the indicator appears and then check the registers. * The heating equipment itself may not be working. Verify its operation in Test Mode.
V
vrivasSep 4, 2025
Why is my Honeywell T7350 cooling not working?
- J
  jasontorresSep 4, 2025
  If the cooling isn't activating on your Honeywell Thermostat, there could be several reasons: * **No power to the thermostat:** Ensure the X terminal is connected to the system transformer and verify 24 Vac between the X and RH terminals. If missing, check the circuit breaker, system fuse, HVAC equipment power switch, and wiring. * **Thermostat minimum off time is activated:** Wait up to five minutes for the system to respond, or use PDA or LONSPEC™ to configure cooling response. * **System selection is set incorrectly:** Make sure the system selection is set to Cool or Auto.
N
nhernandezSep 6, 2025
Why is my Honeywell T7350 Thermostat heat not working?
- J
  John FreySep 6, 2025
  If the heat isn't activating on your Honeywell Thermostat, here's what you can check: * **No power to the thermostat:** Ensure the X terminal is connected to the system transformer and verify 24 Vac between the X and RH terminals. If missing, check the circuit breaker, system fuse, HVAC equipment power switch, and wiring. * **Thermostat minimum off time is activated:** Wait up to five minutes for the system to respond, or use PDA or LONSPEC™ to configure heating response. * **System selection is set incorrectly:** Ensure the system selection is set to Heat or Auto.
J
Jennifer McdowellSep 7, 2025
Why won't my Honeywell Thermostat temperature settings change?
- M
  Michele CoxSep 7, 2025
  If you're unable to change the temperature settings on your Honeywell Thermostat, it could be due to these reasons: * **Temperature limits reached:** Check the temperature setpoints. Heating limits are 40 to 90°F (7 to 31°C), and cooling limits are 45 to 99°F (9 to 37°C). * **Occupied setpoint temperature range stops configured:** Use a PDA or LONSPEC™ to check setpoint stops and reconfigure if necessary. * **Keypad locked:** Use PDA or LONSPEC™ (Set, Display) to unlock the keypad or press both Run Schedule and Copy, then change the keypad lock level.
J
Jessica MendozaSep 8, 2025
What to do if temperature settings will not change on Honeywell T7350?
- J
  Jamie StoneSep 9, 2025
  If you can't change the temperature settings on your Honeywell Thermostat, it could be because you've reached the upper or lower temperature limits. The heating limits are 40° to 90° F (7° to 31° C), and the cooling limits are 45° to 99° F (9° to 37° C). Another reason might be that occupied setpoint temperature range stops were configured. Use a PDA or TStatSpec software to check and reconfigure the setpoint stops if necessary. Also, the keypad might be locked. If LOCKED appears on the LCD when a key is pressed, use PDA or TStatSpec software to unlock the keypad, or press both Run Schedule and Copy, then change the keypad lock level.