The White Rodgers 1F95-1277 is a Blue Universal Touchscreen Thermostat with Automatic Heat/Cool Changeover Option for single stage, multi-stage, or heat pump systems. It features 7 Day, 5+1+1 Day, or Non-Programmable options, dual fuel capability, wired remote sensor support, and economizer/damper control. Battery-powered with 2 AA batteries; compatible with 24V systems up to 1.5A per terminal, 2.5A max total. Below are the key specifications, installation, operation, programming, and troubleshooting instructions.
Disconnect electric power to the system at the main fuse or circuit breaker box until installation is complete to prevent electrical shock and/or equipment damage. Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code. Remove old thermostat: Mark wires for terminal identification so proper connections can be made to the new thermostat. Battery: 2 "AA" alkaline batteries are included; remove battery tag to engage. Replace with premium brand (e.g., Duracell® or Energizer®). If home is unoccupied for over 3 months and low battery icon is displayed, replace batteries before leaving. Power Stealing Switches: Leave in "On" position for most systems. If issues occur (e.g., furnace draft inducer runs without call for heat), set to "Off".
| Power Method | Switch Position | Backlight (OFF) | Backlight (ON) | Notes |
|---|---|---|---|---|
| Battery Only | ON | No Backlight | Momentary Backlight | For mV heat systems |
| Common Attached to "C" | ON | Momentary Backlight | Continuous Backlight | |
| Battery with Power Stealing | ON | Momentary Backlight* | Continuous Backlight* | *May dim on high impedance systems |
| Battery with "W/E" and "Y" but no Power Stealing | ON | No Backlight* | Momentary Backlight* |
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 White Rodgers 1F95-1277 is a Blue Universal Touchscreen Thermostat with automatic heat/cool changeover. Supports 7 Day, 5+1+1 Day, or Non-Programmable modes. Applications include single/multi-stage heat/cool systems (SS1/MS2) and heat pumps (HP1/HP2) with up to 4 heat/2 cool stages. Features include touchscreen operation, remote sensor support, dual fuel, cool savings, and filter/UV lamp reminders.
| Application | Supported |
|---|---|
| Heat Pump (No Aux/Emergency Heat) | Yes |
| Heat Pump (with Aux/Emergency Heat) | Yes |
| Systems with up to 4 Stages Heat, 2 Stages Cool | Yes |
| Heat Only Systems | Yes |
| Millivolt Heat Only Systems – Floor or Wall Furnaces | Yes |
| Cool Only Systems | Yes |
| Gas or Oil Heat | Yes |
| Electric Furnace | Yes |
| Hydronic (Hot Water) Zone Heat – 2 Wires | Yes |
| Hydronic (Hot Water) Zone Heat – 3 Wires | Yes |
| Wired Remote Temperature Sensor (Indoor or Outdoor) | Yes |
| Dual Fuel Feature (Heat Pump Mode, Outdoor Remote Required) or Damper Control Feature | Yes |
CAUTION! To prevent electrical shock/equipment damage, disconnect power at main fuse/circuit breaker until installation complete. Label wires prior to disconnection. If unsure about wiring, consult qualified contractor.
WARNING! Do not use on circuits exceeding 20-30 VAC 50/60 Hz (0.01-1.5A 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 if power off >1 hour (compressor damage; allow heaters to warm oils). Lockout bypass only for technicians after 6 hours oil heaters on, 5 min off.
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. Turn to OFF before battery replacement. Use alkaline only. Handle to avoid static discharge. Touch side of thermostat to release static before touching keys.
Shut off electricity at main fuse box. Verify power off with voltmeter. Remove front cover of old thermostat. With wires attached, remove wall plate. Label each wire with terminal designation before disconnecting. Disconnect wires one at a time; do not let fall into wall. Pull at least 6 inches out.
1. Pull thermostat body off base (do not force). 2. Mark and drill mounting holes using base as template; use anchors if holes are oversized. 3. Fasten base to wall with screws; level for appearance only. 4. Connect wires to terminal block (see diagrams). 5. Push excess wire into wall; plug hole with fire-resistant material. 6. Snap thermostat onto base. 7. Remove battery tag; set system to OFF for battery replacement (rear top of thermostat).
Batteries: 2 "AA" alkaline (replace every 2 years; low shows battery icon). Insert positive (+) to right. Remove battery tags to activate.
Terminal Designations: O/B (changeover valve for heat pump energized constantly in cooling and off/heating), Y2 (2nd Stage Compressor), Y (Compressor Relay), G (Fan Relay), RC (Power for Cooling), RH (Power for Heating), C (Common wire from secondary side of cooling), 6 (Powered closed 3rd wire for 3-wire zone valve), W/E (Heat Relay/Emergency Heat Relay (Stage 1) (3rd Stage Heat in HP2)), W2 (2nd Stage Heat (4th Stage Heat in HP2)), - (Common (DC) for wired remote temperature sensor), S (Frequency signal from remote temperature sensor), + (Power (DC) to remote temperature sensor), A1 (Economizer/Time of Day Output energized in occupied periods, powered by RC or RH terminal), L (Compressor diagnostic indicator).
Single Stage or Multi-Stage System (No Heat Pump) with Single Transformer: Jumper between RH & RC; Y G W/E C A1 L O/B RC; 24 Volt (Hot) Cool; Y2 W2; Diagnostic Indicator Input; Time of Day/ (Economizer/ Damper) Energized in Morn, Day, Eve Periods.
Single Stage or Multi-Stage System (No Heat Pump) with Two Transformers: Remove Jumper Wire; Jumper between RH & RC; A1 Switch Power Source; Position Cool RC Transformer Heat RH Transformer; Y G L O/B W/E C; 24 Volt (Hot) Cool System; 24 Volt (Hot) Heat; HOT 24VAC NEUTRAL CLASS II TRANSFORMER HEATING; A1 RC RH Y2 W2; O Energized Constantly in Cool Mode; B Energized Constantly in Heat, Off, Emergency Mode.
Heat Pump Systems: Jumper Y + W/E L Y2 O/B + W2 C A1 RC RH G; System Heat Pump 1 (HP1) Heat Pump 2 (HP2); Comfort Alert II Module or Similar System Diagnostic Module; O Energized in Cool Mode; B Energized in Heat, Off, Emergency Mode; Heat and Cool Mode 1st Stage (Compressor); No Output 2nd Stage (Compressor); Heat Mode - 2nd Stage, Emergency Mode - 1st Stage; Note: Dual Fuel option de-energizes Heat mode stage 1 (compressor) when auxiliary heat is energized; Blower/ Circulator Fan Energized on Call for Heat or Cool. Set Elect/Gas Option for Emergency mode; 24 Volt (Hot) Heat 24 Volt (Hot) Cool Optional 24 Volt (Common); Time of Day/ (Economizer/ Damper) Energized in Morn, Day, Eve Periods.
CAUTION! Refer to equipment manuals for specifics. Tighten securely; keep wires clear.
Turn on power; light standing pilot if applicable. Set option switches to manual changeover for testing. The LED indicator will glow green for first stage and yellow for second stage. EMERGENCY (heat pump only): Press to select EMER SYSTEM mode. The LED indicator will glow red for emergency mode. A flashing light indicates a malfunction in the system.
CAUTION! Do not operate below 50°F if power off >1 hour (warm compressor oils).
Factory preprogrammed 7-day; 2 periods (OCCU/UNOC); independent heat/cool. RESET to restore defaults. To enter the User Configuration menu, press PROGRAM to make sure the thermostat is in the run program mode, then press TIME TIME BACK at the same time.
Factory Heat: OCCU 8:00 AM 70°F, UNOC 10:00 PM 62°F. Cool: OCCU 75°F, UNOC 85°F.
Set option switches on back before mounting. Remove battery 2 min when changing. To enter the User Configuration menu, press PROGRAM RUN to make sure the thermostat is in the run program mode, then press TIME FWD and TIME BACK at the same time.
| Step | Press Button(s) | Displayed (Factory Default) | Press or to select | Comments |
|---|---|---|---|---|
| 1 | TIME FWD TIME BACK | 0 ° F (room temperature) | 5 LO to 5 HI | Adjusts temperature display higher or lower. |
| 2 | TIME FWD | EMR (ON) OFF or ON L | OFF or ON L | Selects EMR option ON or OFF or L ON. |
| 3 | TIME FWD | ( ° F) ° C | ° F or ° C | Adjusts temperature display to ° F or ° C. |
| 4 | TIME FWD | SET FAN (0) 0 - 6 HRS | 0 - 6 HRS | Set Fan (one shot) option. Set the duration of a temporary fan option. |
| 5 | TIME FWD | BEEP (ON) OFF | ON or OFF | Turns keypad beeper ON or OFF. |
| 6 | TIME FWD | HEAT FAST (OFF) ON | OFF or ON | OFF delays starting second stage for economy. ON starts second stage earlier with user intervention. |
| 7 | TIME FWD | COOL FAST (OFF) ON | OFF or ON | OFF delays starting second stage for economy. ON starts second stage earlier with user intervention. |
| 8 | TIME FWD | TEMP OUT (OFF) ON | OFF or ON | Enables outdoor temperature sensor. Requires optional remote sensor connected to terminal OT and remote thermistor probe. Also displays outdoor temperature if active. |
| 9 | TIME FWD | FONE (Icon) (OFF) ON | OFF or ON | Telephone RUN program feature. Requires optional X10 system. |
| 10 | TIME FWD | COMP RUN TIME (00) (Compressor run time in hours) | PROGRAM RUN TIME FWD | Shows accumulated time compressor has run. To reset to 00, press and . |
| 11 | TIME FWD | AUX RUN TIME (00) (AUXILIARY run time in hours) | PROGRAM RUN TIME FWD | Shows accumulated time AUXILIARY has run. To reset to 00, press and . |
Keypad Lockout Menu (access from User Menu):
| Step | Press Button(s) | Displayed (Factory Default) | Press or to select | Comments |
|---|---|---|---|---|
| 1 | PROGRAM RUN TIME and TIME (hold for two seconds) FWD BACK TIME FWD | PART LOCK (OFF) ON | OFF or ON | Partial Keypad lockout OFF or ON. |
| 2 | LOCK (OFF) ON | OFF or ON | Total Keypad lockout OFF or ON. |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No Display | Dead battery. | Replace 2 AA alkaline; "BAT" flashes/continuous. |
| System Won’t Turn On | Lockout active; no call; wiring. | Wait 5 min; check setpoint/mode; verify wires. |
| Fan Runs Continuously | FAN ON. | Set to AUTO. |
| Incorrect Temperature | Wrong program/time. | Check/adjust program, clock. |
| Power Failure | No battery. | Reprogram; defaults 64°F heat/82°F cool. |
| Static Discharge | Handling. | Touch grounded object before handling. |
| Display Blank | Power loss; dead batteries. | Check R/C wiring; replace 2 AA batteries. |
| Battery Indicator Flashing | Low batteries. | Replace 2 AA; program retained. |
| No Heat/No Cool | Wrong mode; setpoint; wiring; no R/C. | Set mode; adjust setpoint; verify wires/R C connected. |
| Fan Not Running | No G wire; AUTO no call. | Check G; set ON. |
| Short Cycling | 5-min lockout. | Wait; override for testing: hold PRGM + TEMP at startup. |
| Program Lost | Extended power failure without batteries. | Reprogram; defaults to 64/82°F. |
| Stages Not Activating | Setpoint differential not met; config. | Adjust setpoint 1°/3°/5°; check option switches. |
| Emergency Heat Not Working | Not in EMER mode; wiring. | Set SYSTEM EMER; check W1/W2/W3 wires. |
RESET BUTTON: If the thermostat does not respond when keys are pressed, or the thermostat is not operating properly, you may use the reset button located on the back of the thermostat body. RESET SWITCH: See the Troubleshooting section at the end of this document for more information about the function of this switch.