White Rodgers 1F90W-71 User Manual

The White Rodgers 1F90W-71 is a 5-day/2-day programmable electronic digital thermostat with wireless remote indoor sensor for single-stage heat/cool or heat-only systems, including standard, three-wire zone valve, millivolt, electric heat, gas/oil systems. It features independent heating/cooling programs with up to 4 time/temperature settings per day, automatic/manual changeover, Energy Management Recovery (EMR), battery backup with 3 AA batteries, and wireless sensor up to 200 ft range. Powered by 24 VAC; compatible with systems up to 1.5A total load. Below are the key specifications, installation, operation, programming, and troubleshooting instructions.

Preparations

Assemble tools: hand or power drill with 3/16 inch drill bit (if needed), flat blade screwdriver, wire cutter/stripper, level, voltmeter. Shut off electricity at main fuse box until installation complete. Label wires before disconnecting. Install about 5 ft. above floor on inside wall, away from drafts, direct sunlight, heat sources, windows, doors, registers, poor circulation. For sensor: similar location, up to 200 ft from thermostat.

WARNING! Failure to read and follow all instructions carefully before installing or operating this control could cause personal injury and/or property damage. Save these instructions.

Description

This wall-mounted, low voltage thermostat maintains room temperature by controlling heating/cooling systems. Uses microcomputer for precise control. 5+2 day programming with 4 time/temperature settings per day, independent heat/cool. Features LCD display alternating time/room temp (local/remote/average), up/down arrows, SYSTEM switch (HEAT/OFF/COOL/AUTO), FAN switch (ON/AUTO), PRGM switch. Includes wireless remote indoor sensor (F145W-01) for up to 200 ft range. Batteries maintain program ~1 year.

Applications: Standard Heat/Cool or Heat-Only: Yes; Three-Wire Zone Valve: Yes; Millivolt: Yes; Electric Heat: Yes; Gas/Oil: Yes; Do not use with: Multi-Stage, Heat Pump, >30 VAC/1.5A.

Precautions

CAUTION! To prevent electrical shock/equipment damage, disconnect power at main fuse/circuit breaker until installation complete. Label wires prior to disconnection.

WARNING! Do not use on circuits exceeding 30 VAC 50/60 Hz (1.5A max total); higher voltage damages control/causes shock/fire. Do not short terminals on gas valve/primary control to test; short/incorrect wiring burns out components/causes injury/property damage. Conform to NEC Class II circuits.

ATTENTION! This product does not contain mercury but may replace one that does. Handle carefully to avoid malfunction.

Specifications

• Electrical: 17-30 VAC 50/60 Hz, NEC Class II; Terminal Load 1.5A max total.
• Batteries: 3 AA alkaline (~1 year life).
• Setpoint Range: 45°F to 99°F (7°C to 37°C).
• Operating Ambient: 32°F to 105°F (0°C to 41°C).
• Humidity: 90% non-condensing max.
• Shipping: -40°F to 150°F (-40°C to 65°C).
• Dimensions: Thermostat approx. 3-1/2”H x 5-1/2”W x 1-1/8”D; Sensor 2-3/4”H x 4-1/2”W x 7/8”D.
• Wireless: 418 MHz, 200 ft range, 2 AA batteries for sensor.
• Other: Compressor lockout 5 min.

Removing Old Thermostat

Shut off electricity, verify with voltmeter. Remove cover, wall plate. Identify wire types using table (e.g., R,W,Y,G = heat/cool). Label wires with self-adhesive labels. Pull at least 6 inches out; do not let fall into wall.

Installation

Program thermostat with batteries before mounting. Pull wires through subbase, connect per wiring. Place subbase over hole, mark/drill/fasten (level). Push excess wire in, seal. Attach thermostat by aligning pins/snaps.

Batteries: Install 3 AA before programming; replace if low.

Wiring Diagrams

Terminal Designations: RH/RC (power, jumper single trans.), W (heat), Y (cool), G (fan).

Single Stage Heat/Cool: RH to hot, jumper RH-RC, W heat, Y compressor, G fan.

Heat Only: Omit Y.

Millivolt: Specific terminals.

CAUTION! Install red jumper RH/RC for single transformer.

Wireless Sensor Installation

Mount sensor 5 ft above floor, interior wall. Insert 2 AA batteries. Press/hold sync button until LED flashes. On thermostat, enter config to pair (select remote). Signal bars on display.

Check Operation

Turn on power. Set switches to manual for testing. Verify sensor signal.

Fan Operation

1. FAN ON: Blower operates.
2. FAN AUTO: Stops within 1 min.

Heating System

1. SYSTEM HEAT.
2. Setpoint above room: Heat operates.
3. Below: Stops.

Cooling System

CAUTION! Do not operate below 50°F.

1. SYSTEM COOL.
2. Setpoint below room: Compressor after 5-min delay.
3. Above: Stops.

Operating Features

• Home Screen: Time/temp alternate (local/remote/avg); icons for mode, battery, period, signal bars.
• Key Features: Auto changeover (3°F deadband), EMR (15 min/°F early), keypad lock (total/limited), compressor protection, wireless sensor (local/remote/avg).
• Option Switches: Group A (lockout), Group B (changeover, EMR).
• Range Limits: 45-99°F.

Programming

5+2 day; 4 periods (MOR/DAY/EVE/NHT). Separate heat/cool. Program with batteries.

1. Set Time/Day: PRGM, adjust TIME/DAY.
2. Program: Select HEAT/COOL, PRGM period/group, adjust TIME/TEMP, PRGM advance.
3. Review: PRGM + VIEW.
4. Run: RUN.
5. Hold: HOLD override.

Factory Heat: 6AM 70°F, 8AM 62°F, 6PM 70°F, 10PM 62°F. Cool: 6AM 78°F, 8AM 85°F, 6PM 78°F, 10PM 82°F.

Installer Configuration

Set option switches on back before attaching. Additional menu for wireless: sensor mode, calibration.

Troubleshooting