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What types of timers are available on the HONEYWELL T8601 thermostat and how are they measured?
The HONEYWELL T8601 thermostat has up to three timers to help you remember when to change or clean the furnace air filter, whole-house humidifier pad, or ultraviolet (UV) lamp. The specific timers available depend on the type of thermostat system you have.
| Timer Measurement | Type of Thermostat | |
|---|---|---|
| Manual System Switches (Heat, Off, Cool) | Pushbutton System Keys (Heat, Off, Cool) | |
| Calendar days in any mode. | Furnace air filter and UV lamp timers | UV lamp timer |
| Calendar days in Heat mode only. | Humidifier pad timer | Humidifier pad timer |
| System run time in any mode. | — | Furnace air filter timer |
How do I view or reset the timer settings on my HONEYWELL T8601 thermostat?
When a timer is activated on your HONEYWELL T8601 thermostat, the word “Filter” will flash on the display until the timer is reset. To view or reset the settings, follow these steps:
1. Reset the timer by pressing the ‘i’ key until the expired timer is displayed (e.g., showing “0 Days”).
2. Press the Time ▲ key to reset the timer to its preset duration (e.g., “30 Days”).
3. Press the Run Program key to return to the normal display.
NOTE: You can view the number of days remaining on a timer at any time by pressing the ‘i’ key three or four times. If more than one timer is active, all active timers will be shown sequentially as you press the ‘i’ key several times.
What are the installer setup options for the timers on the HONEYWELL T8601 thermostat?
The installer setup options for the HONEYWELL T8601 allow for customization of the furnace air filter, humidifier pad, and UV lamp timers. The following table details the available settings:
| Selection | Installer Setup Number | Factory Setting | Other Choices | ||
|---|---|---|---|---|---|
| Display | Description | Display | Description | ||
| Furnace air filter timer (pushbutton System keys) | 43 | 2 | 30 days (System run time) | 0, 1, 3, 4 | 0 – off 1 – 10 days 3 – 60 days 4 – 120 days (Time is counted when heat, cool or fan is running) |
| Furnace air filter timer (manual System switches) | 43 | 2 | 90 days (calendar days) | 0, 1, 3, 4 | 0 – off 1 – 30 days 3 – 180 days 4 – 365 days (Time is counted by calendar days in any mode.) |
| Humidifier pad monitor | 44 | 0 | Off | 1, 2, 3 | 1 – 90 days 2 – 180 days 3 – 365 days (Time is counted by calendar days in heat mode.) |
| Ultraviolet air treatment (UV) system lamp monitor | 45 | 0 | Off | 1 | 1 – 365 days (Time is counted by calendar days in any mode.) |
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