1F83H-21NP Thermostat Installation and Operation Instructions

Model: 1F83H-21NP (non programmable)

Features: Thermostat with heat pump, battery or wired power with common wire.

Optional Accessory: Wall plate F61-2663, 6 3/4 in W x 4 1/2 in H.

INDEX

Installation of the thermostat: Pages 2-4
Wiring: Page 2
Installer Menu: Pages 3-4
Thermostat Operation: Pages 5-6
Thermostat Overview: Page 5
User Menu: Page 6
Troubleshooting: Pages 7-8
Homeowner Hotline: Page 8

Thermostat Applications

Heat Pump Systems with Single-Stage Compressor (Air Source or Geothermal) - 1 Stage Auxiliary/Emergency Heat:

MERCURY NOTICE: This product does not contain mercury. It may replace a product that does contain mercury. Do not dispose of mercury or products containing mercury in household trash. To find out where to send a mercury-containing product, refer to www.thermostat-recycle.org.

SPECIFICATIONS

Electrical Ratings:

Battery: 20 to 30 Vac, NEC Class II, 50/60 Hz
Wired: 20 to 30 Vac, NEC Class II, 50/60 Hz
Terminal Load: 1.5 A per terminal, 2.5 A maximum for all terminals combined
Setting Range: 45 to 99°F (7 to 37°C)
Nominal Differentials (@ 6°F/h):

Heat Pump (Heating): Fast 0.9°F, Medium 1.2°F, Slow 1.7°F
Heat Pump (Cooling): Fast 0.9°F, Medium 1.2°F, Slow 1.7°F
Auxiliary Heat: Fast 0.5°F, Medium 0.75°F, Slow 1.9°F

Ambient Operating Temperature: 32°F to +105°F (0°C to +41°C)
Temperature Display Range: 32°F to +99°F (0°C to 37°C)
Operating Humidity: 90% max. non-condensing
Shipping Temperature Range: -20°F to +150°F (-29°C to +65°C)
Thermostat Dimensions: 3-3/4 in H x 6 in W x 1-1/8 in D

THERMOSTAT INSTALLATION

WIRING

Refer to the equipment manufacturer's instructions for specific system wiring information. After wiring, refer to the INSTALLER MENU section to properly configure the thermostat. The wiring diagrams shown are for typical systems and describe the function of the thermostat terminals.

Terminal Designation	Terminal Function
R	Power (24 V)
O/B	Changeover terminal; energizes in Cool (O) or Heat (B) mode for heat pump or systems with dampers
Y	1st stage compressor, heating and cooling
G	Fan relay
E*	Auxiliary heat only (emergency heat)
C	24 V common wire (optional with batteries)
L	Heat pump diagnostic/fault terminal (input requires common wire)
W2*	2nd stage heat

*Cut W2/E jumper if separate W2 and E heat sources are used.

IMPORTANT: For dual fuel applications, ensure the Dual Fuel Program option is activated (see Installer Menu).

Precautions:

Do not exceed electrical ratings.
All wiring must comply with local and national electrical codes and ordinances.
This controller is a precision instrument and must be handled carefully. Rough handling or deformation of components can cause controller failure.

WARNING: Do not use this device on circuits exceeding the rated voltage. Higher voltage will damage the control and could cause electrical shock or fire hazard. Do not short circuit terminals on the gas valve or main control. Shorting or incorrect wiring will burn out the thermostat and could cause injury or property damage.

CAUTION: To prevent electrical shock and equipment damage, turn off power to the system at the main circuit breaker box until installation is complete.

Thermostat Leveling: Thermostat leveling is for aesthetic purposes only and does not affect its operation.

Battery Location: Quality AA batteries are required when a common wire is not available. When available, batteries provide an auxiliary power source (which will keep the time active during a power outage).

W2/E Jumper

This thermostat electrically connects the W2 and E terminals so that jumpering is not necessary with a jumper. If your system has separate W2 and E wires, cut the W2/E jumper located on the back of the thermostat. This will isolate the two terminals so they can be used independently.

O/B Terminal Selector

The O/B selector on this thermostat is factory set to the O position. This will suit the majority of heat pump applications, which require the changeover relay to be energized in the Cool mode. If the installed heat pump requires a B terminal to energize the changeover relay in the Heat mode, the O/B selector must be set to the B position.

INSTALLER MENU

To prevent changes that could affect system performance, this thermostat has an INSTALLER MENU and a USER MENU. The INSTALLER MENU provides access to all options, while the USER MENU provides access to settings that will not affect system performance. To access the INSTALLER MENU, press the Menu button for 8 seconds. The display will show item 30 from the table below. Use Next to advance through menu items. Press ▲ or ▼ to change a menu item's setting.

Installer Menu No. (Press Menu 8 sec)	Description	Default Setting (flashing icons)	Settings (press ▲ or ▼)
30 [R	Heating Cycle Speed (how often heating will turn on)	MEd	SLO - slow, MEd - medium, FAS - fast
32 [R	Auxiliary Heat Speed (how often auxiliary heat will turn on)	MEd	SLO - slow, MEd - medium, FAS - fast
35 [R	Cooling Cycle Speed (how often cooling will turn on)	MEd	SLO - slow, MEd - medium, FAS - fast
50 [L	Compressor Lockout (protects compressor from short cycling)	OFF	On - 5 minute delay, OFF - no delay
60 dF	Dual Fuel Program (activate if gas is the auxiliary heat source)	OFF	On - gas auxiliary heat, OFF - electric auxiliary heat
65	Maximum Heating Temperature (maximum setpoint for heating)	99	47 to 99
66	Minimum Cooling Temperature (minimum setpoint for cooling)	45	45 to 97

(Installer Menu continues on next page)

INSTALLER MENU (cont.)

Installer Menu No. (Press Menu 8 sec)	Description	Default Setting (flashing icons)	Settings (press ▲ or ▼)
79	Fahrenheit or Celsius	°F	°F – Fahrenheit, °C – Celsius
81	Displayed Temperature Adjustment (adjusts the displayed "Room Temperature")	0	-5 to +5
83	Continuous Display Lighting (keeps backlight on all the time – requires common wire)	OFF	On – always on, OFF – on momentarily
99	Keypad Lockout (prevents unwanted changes to the thermostat)	OFF	On – disables buttons, OFF – all buttons active

EQUIPMENT TEST

Turn on system power.

Fan Operation

If the system does not have a G wire connection, proceed to Heating System.

Place the fan switch in the On position. The fan should start.
Place the fan switch in the Auto position. The fan should stop immediately.

Heating System

Place the fan switch in the Heat position. If the auxiliary heat has a constant pilot, be sure to turn it on.
Press ▲ to set the thermostat 1° above room temperature. The heat pump should start and the thermostat should display Heat On.
Press ▲ to set the thermostat 3° above room temperature. The auxiliary heat should start and the thermostat should display Heat On Auxiliary.
Press ▼ to set the thermostat 1° below room temperature. The heating system should stop and the thermostat should display Heat.

Auxiliary System

Place the system switch in the Aux position. If the auxiliary heat has a constant pilot, be sure to turn it on.
Press ▲ to set the thermostat 1° above room temperature. The auxiliary heating system should start and the thermostat should display Heat On Auxiliary.
Press ▼ to set the thermostat 1° below room temperature. The auxiliary heating system should stop and the thermostat should display Heat Auxiliary.

Cooling System

Place the system switch in the Cool position.
Press ▼ to set the thermostat 1° below room temperature. The fan should start immediately at high speed, then cool air should begin to circulate. The thermostat will display Cool On. There may be a delay of up to 5 minutes. (See Installer Menu, item 50.)
Press ▲ to set the thermostat 1° above room temperature. The cooling system should stop and the thermostat will display Cool.

Note: If Starting Soon is displayed, the compressor lockout feature is active. There will be a delay of up to 5 minutes before the compressor starts. (See Installer Menu, item 50.)

CAUTION: To prevent damage to the compressor or other property, DO NOT operate the cooling system when the outside temperature is below 50°F (10°C).

Do not allow the compressor to run unless the compressor oil heaters have been on for at least 6 hours and the system has not operated for at least 5 minutes.

THERMOSTAT OVERVIEW

Before operating the thermostat, you should be familiar with its functions, display, and the location/operation of the thermostat's buttons and switches.

THERMOSTAT BUTTONS AND SWITCHES	DISPLAY
1.) Fan Switch	7.) Thermostat protects equipment from short cycling (5-minute delay)
2.) System Switch	8.) Indicates system is operating in Cool, Heat, or Aux mode (Aux mode will operate in Heat if the heat pump cannot maintain the programmed temperature).
3.) Backlight Button (located on top of thermostat)	9.) Battery charge level indicator
4.) Raises temperature setting	10.) Low battery indicator
5.) Access menu options	11.) Temperature setpoint
6.) Lowers temperature setting	12.) Appears when the keypad is locked (to prevent unwanted changes)
	13.) Next (Menu button) is used to advance through a menu
	14.) SEE TROUBLESHOOTING GUIDE

When "□ Replace" is displayed, new, name-brand AA batteries should be installed. If the home will be vacant for an extended period and either "□" or "□ Replace" is displayed, install new batteries before leaving.

USER MENU

To customize thermostat settings, press and hold the Menu button for 1/2 second on the home screen. Use Next to advance through menu items. Press ▲ or ▼ to change the setting.

User Menu No. (Press Menu then release)	Description	Default Setting (flashing icons)	Settings (press ▲ or ▼)
	Continuous Display Lighting (keeps backlight on all the time - requires common wire)	OFF	On – always on, OFF-on momentarily

Keypad Lockout - To prevent unwanted changes, the buttons can be disabled. To activate this feature, hold ▲ and the Menu button until the □ icon appears (this option can also be activated in the menu). To disable, hold ▲ and the Menu button for 3 seconds.

TROUBLESHOOTING

Problem	Possible Cause	Corrective Action
Heating, Cooling, or Fan Not Operating (Common Problem)	1.) Blown fuse or tripped circuit breaker. 2.) Furnace on/off switch in OFF position. 3.) Furnace fan compartment door or panel loose or improperly installed. 4.) Loose connection at thermostat or system.	1.) Replace fuse or reset circuit breaker. 2.) Place switch in ON position. 3.) Replace door or panel to engage safety interlock or door switch. 4.) Tighten connections.
Heating Not Operating	1.) System switch not set to Heat. 2.) Loose connection at thermostat or system. 3.) Heating equipment service or thermostat replacement required.	Check that thermostat and system wires are tight. Diagnostic: Set system switch to Heat and raise setpoint above room temperature. Thermostat should click within five minutes and "Heat On" should appear on display. This click indicates the thermostat is functioning properly. If thermostat does not click, perform the reset procedure after this table. If thermostat still does not click after reset, contact a heating or air conditioning specialist or the store where you purchased the thermostat for replacement. If thermostat clicks, contact the furnace manufacturer or a technician to check if heating is operating properly.
No Cooling	1.) System switch not set to Cool. 2.) Loose connection at thermostat or system. 3.) Air conditioning equipment service or thermostat replacement required.	Check that thermostat and system wires are tight. Diagnostic: Set system switch to Cool and lower setpoint below room temperature. Same as heating no-heat diagnostic except thermostat should be set to Cool and setpoint should be below room temperature. There may be a five-minute delay before the thermostat clicks in Cool mode if the compressor lockout option is selected in the installer menu. (See Installer Menu, item 50.)
Heating, Cooling, or Fan Never Stops	Possible short circuit in wiring, thermostat, or heating/cooling/fan system.	Check all wiring connections to ensure they are not shorted or touching other wires. Reset the thermostat. If problem persists, contact your HVAC technician.
Setpoint and Thermometer Do Not Agree	Thermostat thermometer needs adjustment.	Thermometer can be adjusted +/- 5°. See User Menu, item 04.

TROUBLESHOOTING (cont.)

Problem	Possible Cause	Corrective Action
Heating (or Air Conditioner) Cycling Too Fast or Too Slow (Temperature Swings Too Wide or Too Narrow)	Thermostat location and heating system size can affect cycle length.	Digital thermostats provide precise control and faster cycling than older mechanical models. The system turns on and off more frequently but runs for shorter periods. To increase cycle length, select SLO, for slow cycle, in the installer menu. (See menu items 30 and 35.) If acceptable cycle length cannot be achieved, contact your local HVAC technician for further suggestions.
"Call for Service" Icon Appears	1.) Heating system unable to heat space within 10 degrees of setpoint within 2 hours. 2.) Cooling system unable to cool space within 10 degrees of setpoint within 2 hours. 3.) If "-" is displayed instead of room temperature, the thermostat needs replacement. 4.) None of the buttons on the thermostat operate. 5.) If "Call for Service" flashes, the compressor auto-diagnostic has detected a problem with the outdoor unit.	1.) See corrective action for "No Heating". 2.) See corrective action for "No Cooling". 3.) Replace thermostat. 4.) Check that the keypad lockout is not active (indicated by the □ icon). 5.) Contact a technician to check that the equipment is operating properly.

Resetting the Thermostat or its Settings

If the thermostat batteries are good, but the thermostat displays nothing or does not respond to key presses, reset the thermostat by removing the batteries for 2 minutes. This will not reset the equipment settings or programs. If the problem persists after replacing the batteries, the thermostat will need to be replaced.

To reset only the schedule and settings to their factory defaults, simultaneously press and hold the Menu and Backlight buttons until the display clears and resets.

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