The White Rodgers 1F95-0671 is a universal thermostat supporting single-stage, multi-stage, and heat pump systems, with options for 7-day, 5/1/1-day, or non-programmable scheduling. It features automatic heat/cool changeover, dual fuel capability, and compatibility with wired remote sensors.
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.
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, up/down arrows for adjustment, SYSTEM switch (COOL/OFF/HEAT/EMER/AUTO), FAN switch (ON/AUTO), O/B switch for changeover (factory "O" for COOL energized). 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.
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 or DC (0.05-1.5A per terminal, 2.5A 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 www.thermostat-recycle.org 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.
Batteries: 3 AA alkaline (replace every 2 years; low shows battery icon/"Change Battery"). Insert positive (+) to right. For unoccupied homes >3 months, replace if icon displayed. Offset occurs when <2 months life remains (±10°F); reset manually.
Terminal Designations: L (malfunction indicator), O (changeover COOL), B (changeover HEAT), Y (compressor), Y2 (2nd stage compressor), W/E (heat/emergency relay stage 1), W2 (2nd stage heat/HP1), G (fan), RH (heating power), RC (cooling power), C (common), 6 (3-wire zone valve).
Single Transformer Systems: R to 24VAC hot, C to neutral, Y to compressor, G to fan, W2 to aux (stage 2), E to emergency, O/B to changeover (energized in COOL if "O"). Jumper for single aux both stages.
Two Transformer (No Safety Circuits): Separate transformers; jumper commons. Polarity observed; cut/tape unused.
Two Transformer (Safety in Both): Accessory relay N.O. for safety; jumper commons.
CAUTION! Refer to equipment manuals for specifics. Tighten securely; keep wires clear.
Touch side to release static before keys. Restore power. If system fails, contact serviceperson.
CAUTION! Do not operate below 50°F.
Factory preprogrammed; RESET (back) to restore. 7-day; 2 periods/day (OCCU/UNOC).
Factory Heat: OCCU 70°F, UNOC 62°F. Cool: OCCU 78°F, UNOC 85°F.
SYSTEM to HEAT/COOL/EMER/AUTO; hold MENU 5s. Press MENU to advance; up/down to change.
| Menu Item | Options (Default) | Description |
|---|---|---|
| 1 (System) | HP1, HP2, MS2, SS1 | Heat pump/single/multi-stage. |
| 2 (Fan) | ELE, GAS | Thermostat or furnace controls blower. |
| 3 (Cool Savings) | 0-6 (3) | Humidity-based setpoint adjustment (0=off). |
| 4 (EMR) | ON, OFF | Early start for setpoint recovery. |
| 5 (Anticipation Heat - MS2/SS1) | SL, FA, ME | Cycle rate (slow/fast/medium). |
| 6 (Anticipation HP) | SL, FA, ME | Compressor cycle rate. |
| 7 (Anticipation Cool/Aux) | SL, FA, ME | Cool/aux cycle rate. |
| 8 (Lockout) | ON, OFF | 5-min compressor delay. |
| 9 (Modes) | Various (e.g., Heat/Auto/Cool/Off) | Enabled modes. |
| 10 (Backlight) | ON, OFF | Continuous or momentary. |
| 11 (Temp Adjust) | ±4° (0) | Display calibration. |
| 12 (°F/°C) | °F, °C | Units. |
| 13 (Beeper) | ON, OFF | Audio feedback. |
| 14 (Program) | P7, P3, 0 | 7-day/5/1/1/non-programmable. |
| 15 (Periods/Day) | 4, 2 (4) | Program steps. |
| 16 (Heat Auto Sched) | ON, OFF | Auto Heat scheduling. |
| 17 (Cool Auto Sched) | ON, OFF | Auto Cool scheduling. |
| 18 (Fast Heat) | ON, OFF | Immediate 2nd stage on >3°F raise. |
| 19 (Fast Cool) | ON, OFF | Immediate 2nd stage on >3°F lower. |
| 20 (Remote Sensor) | OFF, On (Indoor/Outdoor) | Enable wired sensor; local on/off. |
| 21 (DST) | ON, OFF | Automatic daylight saving. |
| 22 (Lockout Type) | L, P, Limit | Total/partial/limited range lockout. |
| 23 (Lockout Code) | 001-999 (000 invalid) | PIN for lockout. |
| 24 (Heat Limit) | 62-98 (99) | Max heat setpoint. |
| 25 (Cool Limit) | 46-82 (45) | Min cool setpoint. |
| 26 (Filter/UV) | ON/OFF; 25-1975h/days (200h/350d) | Reminders. |
| 27 (O/B) | O, B | Reversing valve (cool/heat energized). |
| 28 (RUN SCHED) | - | Exit menu. |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No Heat/Cool/Fan | Blown fuse/breaker; power off; loose door/panel; loose wires. | Replace/reset; turn ON; secure panel; tighten connections. |
| No Heat | Pilot out; lockout; needs service. | Re-light; diagnostic click test (set Heat > temp; listen for click; reset if no); contact service. |
| No Cool | Needs service; lockout. | Diagnostic click test (set Cool < temp; up to 5-min delay); contact service. |
| Runs Constantly | Wiring short; thermostat short; system short; Fan ON. | Check insulation; reset thermostat; test system; set Fan AUTO. |
| Temp Disagree | Calibration off. | Adjust ±4° in menu. |
| Cycles Too Fast/Slow | Location/size; select SL cycle rate. | Change menu; consult service. |
| Forgot Lockout Code | - | Hold Menu 20s to unlock. |
| Reset | Voltage spike/static. | Remove R/C wires/batteries 2 min; rewire/battery. Note: Resets all settings to factory. |