EMERSON White-Rodgers 1F85U-22NP Non-Programmable Thermostat
SPECIFICATIONS
Electrical Rating:
- Battery Power ………………………………. mV to 30 VAC, NEC Class II, 50/60 Hz
- Input-Hardwire ……………………………… 20 to 30 VAC, NEC Class II, 50/60 Hz
- Terminal Load …………………………………… 1.5 A per terminal, 2.5A maximum all terminals combined
- Setpoint Range …………………………………. 45° to 99° F (7° to 37° C)
- Rated Differentials (@ 6°F/ Hr): Fast Med Slow
- Heat (Conventional Gas / Oil / Elect) ….. 0.5°F 0.75°F 1.9°F
- Cool (Central Air) …………………………… 0.9°F 1.2°F 1.7°F
- Heat Pump (Heat and Cool) ……………. 0.9°F 1.2°F 1.7°F
- Heat Pump Aux. ……………………………. 0.5°F 0.75°F 1.9°F
- Operating Ambient ……………………………. 32°F to +105°F (0° to +41°C)
- Display Temperature Range ………………….. 32°F to +99°F (0 to 37°C)
- Operating Humidity …………………………… 90% non-condensing maximum
- Shipping Temperature Range ………………. -20°F to + 150°F (-29° to +65°C)
- Thermostat Dimensions ……………………… 3-3/4” H x 6” W x 1-1/8” D
THERMOSTAT INSTALLATION
WIRING Refer to equipment manufacturer’s instructions for specific system wiring information. After wiring, see INSTALLER MENU for proper thermostat configuration. Wiring table shown are for typical systems and describe the thermostat terminal functions. Wiring will change when dedicated emergency heat is on (See Installer Menu #15).
| Terminal Designations | Terminal Function |
| RC | Power (24V) – Cooling |
| RH | Power (24V) – Heating |
| O/B
6 (not shown) – 3 wire zone valve |
Reversing Valve or output for 3 wire zone valves Configurable as “O” or “B” Reversing Valve or 3 wire zone heat (power close) |
| Y | 1st Stage Compressor (conventional or heat pump) |
| G | Fan Relay |
|
W/E |
1st Stage Heat (conventional);
1st Stage Auxiliary Heat (heat pump) Can operate as Emergency Heat only (See Installer Menu #15) |
| C | Common wire for 24V (optional with batteries) |
| L | Heat Pump Malfunction / Diagnostic terminal (input signal requires common) |
| Y2 | 2nd Stage compressor (conventional only) |
|
W2 |
2nd Stage Heat (Conventional)
Can operate as 1st Stage Auxiliary Heat (See Installer Menu #15) |
Precautions
- Do not exceed the specification ratings.
- All wiring must conform to local and national electrical codes and ordinances.
- This control is a precision instrument, and should be handled carefully.
- Rough handling or distorting components could cause the control to malfunction.
To prevent changes that may affect system performance, this thermostat has an INSTALLER MENU and a USER MENU. The INSTALLER MENU provides access to every option, while the USER MENU provides access to items that will not affect system performance. To access the INSTALLER MENU press the Menu button for 8 seconds. The display will show item 05 in the table below. Use Next and Back to navigate through menu items. Press or to change a menu setting.
TEST EQUIPMENT
- Fan Operation
- If your system does not have a G terminal connection, skip to Heating System.
- Press
the fan button to select the On position. The blower should begin to operate. - Press the fan button to select the Auto position. The blower should stop immediately.
- Heating System
- Press the System button to select the Heat position. Heat Pumps only – if the auxiliary heating system has a standing pilot, be sure to light it.
- Press to adjust thermostat setting to 1° above room temperature. The heating system should begin to operate and the thermostat will indicate Heat On.
- For heat pumps with auxiliary- Press to adjust thermostat setting to 3° above room temperature. The auxiliary heat should begin to operate and the thermostat will indicate
- Press
- Heat On Aux.
- Press to adjust thermostat setting 1° below room temperature. The heating system should stop operating and the Heat On icon will disappear.
- Press
- Auxiliary System ( only for heat pumps with auxiliary)
- Press the system button to select the Aux position. This bypasses the heat pump and runs auxiliary only heat.
- Press to adjust thermostat setting to 1° above room temperature. The auxiliary heating system should begin to operate and the thermostat will indicate Heat On Aux.
- Press to adjust thermostat setting 1° below room temperature. The auxiliary heating system should stop operating and the Heat On Aux icon will disappear.
- Press
- Cooling System
- Press the System button to select the Cool position.
- Press to adjust thermostat setting 1° below room temperature. The blower should come on immediately on high speed, followed by cold air circulation. The thermostat will indicate Cool On. There can be up to a 5 minute delay. (see INSTALLER MENU, item 50)
- Press to adjust thermostat setting to 1° above room temperature. The cooling system should stop operating and the Cool On icon will disappear
- Pres
USING THE THERMOSTAT
THERMOSTAT OVERVIEW
| THERMOSTAT BUTTONS AND SWITCHES | THE DISPLAY |
| 1.) Fan Button | 8.) Next (Menu button) is used to navigate within a menu |
| 2.) Away Button (set a frequently used temperature) | 9.) Back (Fan button) is used to navigate within a menu |
| 3.) System Button | 10.) Exit (Away button) returns to the home screen |
| 4.) Backlight Button (located on the top of the thermostat) | 11.) Thermostat is protecting the equipment from short cycling (5-minute delay) |
| 5.) Raises Temperature Setting | 12.) Indicates that the system is running in Cool, Heat or Auxiliary mode. (Heat Pump Only -The auxiliary will run in Heat mode when the heat pump cannot maintain the set temperature.) |
| 6.) Access Menu Options | 13.) SEE TROUBLESHOOTING |
| 7.) Lowers Temperature Setting | 14.) Battery status indicator |
| 15.) Replace battery indicator | |
| 16.) Temperature setpoint | |
| 17.) Appears when the keypad is locked (to prevent unwanted changes) |
To customize thermostat settings, press and hold the Menu button for ½ second from the home screen. Use the or
buttons to highlight Settings and press Next. Use Next and Back to navigate through menu items. Press or to change the setting
| User’s Menu # (Press Menu button and release) |
Description |
Default Setting
(flashing icons) |
Settings
(Press or ) |
| 01 | Fahrenheit or Celsius | °F | °F – Fahrenheit
°C – Celsius |
| 02 | Temperature Display Adjustment: adjust the Room Temperature |
0 |
-5 to +5 |
| 03 | Continuous Display Light: keep the backlight always on – “C” wire required |
OFF |
On – always on
OFF – momentarily |
| 04 | Auto-Changeover: thermostat automatically switches between heat and cool |
OFF |
On – enable auto
OFF – disable auto |
THERMOSTAT OPERATION
Away – Stores a frequently used temperature setting so that you can select it with a touch of the Away button. To set an Away temperature press temp up or temp down to the temperature you want. At the desired setting, hold the Away button for 3 seconds. When the setting is stored the set point will flash one time. You can store an Away setting for both Cool and Heat modes. (Example: Set an Away temperature to 88°F in the summer for cooling and 55°F in the winter for heating.)
Keypad Lockout – To prevent unwanted changes, the buttons can be disabled. To turn this feature On, press and hold and the Menu button until the icon appears (this can also be turned on in the menu). To turn Off, press and hold and the Menu button for 3 seconds.
TROUBLESHOOTING
| Symptom | Possible Cause | Corrective Action |
|
No Heat/ No Cool/ No Fan (common problem) |
1.) Blown fuse or tripped circuit breaker
2.) Furnace power switch to OFF 3.) Furnace blower compartment door panel loose or not properly installed 4.) Loose connection to thermostat or system |
1.) Replace fuse or reset breaker
2.) Turn switch to ON 3.) Replace door panel in proper position to engage safety interlock or door switch
4.) Tighten Connections |
|
No Heat |
1.) System not set to Heat
2.) Loose connection to thermostat or system 3.) Heating System requires service or thermostat requires replacement |
1.) Set thermostat to Heat.
2.) Verify thermostat and system wires are securely attached. 3.) Diagnostic: Set System to Heat and raise the setpoint above room temperature. Within five minutes the thermostat should make a soft click sound and “Heat On” should appear on display. This sound indicates the thermostat is operating properly. If the thermostat does not click, try the reset operation listed below. If the thermostat does not click after being reset, contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, contact the furnace manufacturer or a service person to verify the heating system is operating correctly. |
| Symptom | Possible Cause | Corrective Action |
|
“Call for Service” icon appears on displayed |
1.) Heating system is not able to heat the space to within 10 degrees of the setpoint within 2 hours
2.) Cooling system is not able to cool the space to within 10 degrees of the setpoint within 2 hours 3.) If “–” is displayed for the Room Temperature, a replacement thermostat is needed 4.) None of the buttons operate on the thermostat 5.) If “Call for Service” is flashing, compressor self diagnostic is detecting an issue with the outdoor unit |
1.) See corrective action for “No Heat” 2.) See corrective action for “No Cool” 3.) Replace thermostat
4.) Make sure keypad lockout is not turned on ( ), If it’s OFF, try reset shown below. 5.) Contact a service person to verify the outdoor equipment is operating correctly |
NEED HELP
Emerson and White-Rodgers are trademarks of Emerson Electric Co. ©2020 Emerson Electric Co. All rights reserved HOMEOWNER HELPLINE: 1-800-284-2925 emerson.com/white-Rodgers
REFERENCE
Download Manual
EMERSON White-Rodgers 1F85U-22NP Non-Programmable Thermostat
EMERSON White-Rodgers 1F85U-22NP Non-Programmable Thermostat
Leave a Reply