The White Rodgers 1F94W-71 is a 7-day programmable electronic digital thermostat with wireless remote sensor for multi-stage heat/cool or heat pump systems, including up to 3-stage heat/2-stage cool, with automatic heat/cool changeover option. It features 7-day programming with 2 periods per day (occupied/unoccupied), installer configuration menu, and energy-saving features like Energy Management Recovery. Battery-powered with 3 AA batteries for thermostat and 2 AA for sensor; compatible with 24V systems up to 1.5A per terminal. Below are the key specifications, installation, operation, programming, and troubleshooting instructions.
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. This thermostat is for 24V systems only; not for millivolt or line voltage. Install away from drafts, direct sunlight, or heat sources for accurate sensing. 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.
The thermostat consists of cover and base. Features LCD display showing time/room temperature alternating with set point (local/remote/average), up/down arrows for adjustment, SYSTEM switch (COOL/OFF/HEAT/EMER/AUTO), FAN switch (ON/AUTO), O/B switch for changeover. Terminals: R, C, Y, Y2, G, W/E, W2, O/B, L. Supports heat pump with/without aux/emergency heat, up to 3-stage heat/2-stage cool, heat-only/cool-only systems. Includes wireless remote sensor (F145RF-1328) for indoor/outdoor use, max 200 ft distance.
Applications: Heat Pump (No Aux/Emergency Heat): Yes; Heat Pump (with Aux/Emergency): Yes; Standard Heat/Cool: Yes; Multi-Stage: Yes; Heat Only: Yes; Millivolt Heat Only: No; Cool Only: Yes; Gas/Oil Heat: Yes; Electric Furnace: Yes; Hydronic 2/3 Wires: Yes.
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 20-30 VAC 50/60 Hz (0.2-0.6A per Y1,E/W1,G; 1.5A per Y2,W2,O,B; 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. Do not operate cooling below 50°F (compressor damage).
ATTENTION! This product does not contain mercury but may replace one that does. Do not open mercury cells; if damaged, wear non-absorbent gloves, clean up spilled mercury, place in sealed container. Refer to White Rodgers, 2895 Harrison Street, Batesville, AR 72501 for disposal.
A standard heat/cool thermostat consists of three basic parts: 1) Cover (snap-on/hinge type); 2) Base (loosen captive screws); 3) Switching subbase (unscrew from wall/adaptor). Label each wire with terminal designation before disconnecting. Disconnect wires one at a time; do not let fall into wall. If wall mounting plate exists, remove thermostat and plate as assembly.
Pull thermostat body off base (do not force/pry). Place base over wall hole, mark mounting holes, drill, fasten with screws (level for appearance). Connect wires to terminals. Push excess wire into wall, seal hole with fire-resistant material (e.g., fiberglass). Snap cover on. For sensor: Similar mounting, no wiring.
Batteries: Thermostat 3 AA alkaline (replace every year; low shows "LOW BATT"); Sensor 2 AA. Insert positive (+) to right. Remove battery tags to activate.
Electric/Gas Switch: Factory ELEC; set to GAS for gas/oil (no fan power on heat call). For heat pump, always powers fan on heat; set for aux heat type in EMER.
RC/PS Switch: RC for hardwire (C required); PS for power stealing (no C wire).
Terminal Designations: R (24V hot), C (common), Y/Y2 (compressor), G (fan), W/E (heat/emer stage 1), W2 (stage 2 heat), O/B (changeover), L (fault).
Single Stage (SS1): R to hot, C to common, Y to compressor, G to fan, W to heat.
Multi-Stage (MS3/2): Add Y2 compressor 2, W2/W3 heat 2/3.
Heat Pump (HP1/HP2): Y/Y2 compressor, O/B changeover (O cool, B heat), W2/W3 aux heat, E/W1 emer.
CAUTION! Refer to equipment manuals for specifics. Tighten securely; keep wires clear. RC/PS configures power.
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.
Touch side to release static before keys. Restore power. If system fails, contact serviceperson. Verify sensor signal.
CAUTION! Do not operate below 50°F.
Factory preprogrammed 7-day; RESET to restore. 2 periods/day (OCCU/UNOC).
Factory Heat: OCCU 70°F, UNOC 62°F. Cool: OCCU 78°F, UNOC 85°F.
SYSTEM to OFF; hold MENU 5s. Press SYSTEM to advance; up/down to change.
| Step | Display (Default) | Options | Comments |
|---|---|---|---|
| 1 | MS3 | SS1, HP1, HP2 | System Type |
| 2 | LER (OFF) | ON | Learn Mode |
| 3 | OUTSIDE (OFF) | ON | Outdoor Sensor |
| 4 | REMOTE (OFF) | ON | Indoor Remote |
| 5 | LOCAL (ON) | OFF | Local Sensor |
| 6 | CH (0) | 1-9 | Frequency Offset |
| 7 | PRG 2 | 0,2 | Periods |
| 8 | EMR (ON) | OFF | Recovery |
| 9 | CR (FA) | SL | Cycle Rate |
| 10 | CL (OFF) | ON | Compressor Lockout |
| 11 | CdL (ON) | OFF | Backlight |
| 12 | FA (ON) | OFF | Fast Stage 2 |
| 13 | 0 FLTR | 50-1950 | Filter Timer |
| 14 | 0 F | ±4 | Temp Adjust |
| 15 | 4:00 HOLD | 0:00-8:00 | Temp Override |
| 16 | °F | °C | Temp Display |
| 17 | LR HEAT (90) | 62-89 | Heat Limit |
| 18 | LR COOL (45) | 46-82 | Cool Limit |
| 19 | CA (OFF) | ON | Comfort Alert |
| 20-21 | OFF LOCK (000) | 001-999 | Keypad Lock |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Blank Display/No Operation | Voltage spike; low batteries; power loss. | Reset: Remove R/C wires & batteries 2 min; replace. Press RUN+SYSTEM to factory reset. |
| No Heat/No Cool/No Fan | Blown fuse; switch OFF; door loose. | Replace fuse; turn ON; secure door. |
| No Heat | Pilot out; SYSTEM not HEAT; loose wire; lock-out. | Re-light; set HEAT; check wires; service furnace. |
| No Cool | SYSTEM not COOL; loose wire. | Set COOL; check wires; service. |
| Does Not Follow Program | Time/day wrong; EMR early. | Check AM/PM/day; disable EMR. |
| Fan/Heat On No Call | Power stealing in PS mode. | Add C wire, set RC; clip W25 if needed. |
| Antenna + Fault | Loss of signal; wrong channel/freq; wrong ID. | Check distance/channel/freq/ID; Learn Mode; replace sensor. |
| Temp Diff Thermostat/Remote | System sizing; occupancy/sun load. | Adjust weight HI/LO; zone if needed. |
| Heat/Cool/Fan Constant | Short in wiring/thermostat/system; FAN ON. | Check wires; reset; service system. |
| Cycles Too Fast/Slow | Location/system size. | Set SL cycle; service. |
| Setting & Thermometer Disagree | Calibration needed. | Adjust ±3°F in menu. |
| Heat Setpoint No Up | Conflicts with COOL. | Set COOL higher, return HEAT. |
| Cool Setpoint No Down | Conflicts with HEAT. | Set HEAT lower, return COOL. |
| Forgot Lockout Code | - | Press RUN+SYSTEM to reset/unlock. |
| 2nd/3rd Stage No On | Time delay optimizing. | Normal; 0-30 min based on stage 1. |