Key facts
- Brand
- Honeywell
- Model
- TH8000 Series
- Category
- Other
- Industry
- Appliances
- Documents
- 3
- Languages
- EN
- Last added
- 2026-09-29
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Honeywell VisionPRO TH8000 Series Touchscreen Programmable Thermostat Operating Manual
The VisionPRO TH8000 Series thermostat offers a large back‑lit touchscreen, 7‑day programmable schedules, one‑touch temperature overrides, and optional humidity control for select models. It supports various system configurations, from single‑stage heating/cooling to multi‑stage systems with dehumidification.
This operating manual walks you through initial installation, clock and fan settings, system mode selection, programming schedules, battery replacement, advanced functions, troubleshooting, and warranty information. Quick‑reference charts make it easy to locate controls and status displays.
Honeywell TH8000 Series specifications
| Program schedule type | 7‑day programmable schedules |
|---|---|
| Temperature accuracy | ±1 °F |
| Battery type | Lithium battery |
| Display | Large touchscreen with backlight |
| Humidity control | Available on select models |
| Supported system configurations | TH8110U – 1 Heat/1 Cool; TH8320U – up to 3 Heat/2 Cool; TH8321U – up to 3 Heat/2 Cool with dehumidification |
Source: Honeywell VisionPRO TH8000 Series Touchscreen Programmable Thermostat Operating Manual
All Honeywell TH8000 Series documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
How do I set the clock?
Press the CLOCK button, then press “s” or “t” to adjust the time, and press DONE to save the setting.
From: Honeywell VisionPRO TH8000 Series Touchscreen Programmable Thermostat Operating Manual
How can I change the fan setting?
Press the FAN button to select On, Auto, or Circ; press DONE to confirm. Auto runs the fan only when heating or cooling is active.
From: Honeywell VisionPRO TH8000 Series Touchscreen Programmable Thermostat Operating Manual