White Rodgers 1F95-1280 User Manual

The White Rodgers 1F95-1280 is a Blue Universal Touchscreen Thermostat with Automatic Heat/Cool Changeover Option and Damper Control 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.

1. Preparations 2. Description 3. Precautions 4. Specifications 5. Installation 5.1 Wiring Diagrams 6. Check Operation 6.1 Fan Operation 6.2 Heating System 6.3 Emergency System 6.4 Cooling System 7. Operating Features 8. Programming 9. Installer Configuration 10. Troubleshooting

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. 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. Probe for obstructions before drilling.

WARNING! Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code. 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

The thermostat uses solid-state microcomputer technology to provide precise time/temperature control. Features touchscreen LCD display alternating time/room temp/setpoint, SYSTEM switch (HEAT/EMER/OFF/COOL/AUTO), FAN switch (ON/AUTO). Terminals: R (hot), C (common), G (fan), O/B (changeover), Y1/Y2 (compressor stages), W1/W2/W3 (heat stages), A1 (economizer/damper). Supports up to 4 stages heat/2 stages cool, heat pump with aux/emergency, dual fuel, wired remote sensor (indoor/outdoor).

Applications:

ApplicationSupported
Heat Pump (No Aux/Emergency Heat)Yes
Heat Pump (with Aux/Emergency Heat)Yes
Systems with up to 4 Stages Heat, 2 Stages CoolYes
Heat Only SystemsYes
Millivolt Heat Only Systems – Floor or Wall FurnacesYes
Cool Only SystemsYes
Gas or Oil HeatYes
Electric FurnaceYes
Hydronic (Hot Water) Zone Heat – 2 WiresYes
Hydronic (Hot Water) Zone Heat – 3 WiresYes
Wired Remote Temperature Sensor (Indoor or Outdoor)Yes
Dual Fuel Feature (Heat Pump Mode, Outdoor Remote Required) or Damper Control FeatureYes

Precautions

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.

Specifications

Removing Old Thermostat

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.

Installation

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.

Wiring Diagrams

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.

Check Operation

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.

Fan Operation

  1. FAN ON: Blower operates continuously.
  2. FAN AUTO: Blower cycles with system; stops within 1 min when off.

Heating System

  1. SYSTEM HEAT.
  2. Setpoint above room: Stage 1 heat activates within few degrees.
  3. Further above: Stage 2 activates.
  4. Setpoint below: Stops.

Emergency System

  1. SYSTEM EMER (EMER flashes).
  2. Setpoint above room: Emergency heat activates after 5-10 min delay.
  3. Further above: Additional stages if configured.
  4. Setpoint below: Stops.

Cooling System

CAUTION! Do not operate below 50°F if power off >1 hour (warm compressor oils).

  1. SYSTEM COOL.
  2. Setpoint below room: Cooling activates.
  3. Setpoint above: Stops.

Operating Features

Programming

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.

  1. Set Time/Day: Press CLOCK, adjust TIME arrows hour/min, DAY for day.
  2. Program Heat: SYSTEM HEAT, press PRGM for OCCU, adjust TIME/TEMP arrows, PRGM advance to UNOC.
  3. Program Cool: SYSTEM COOL, repeat for cool setpoints.
  4. Copy: Hold COPY to duplicate day.
  5. Review: PRGM + VIEW to cycle.
  6. Run: RUN.
  7. Hold: Press HOLD, adjust TEMP, press HOLD to resume.

Factory Heat: OCCU 8:00 AM 70°F, UNOC 10:00 PM 62°F. Cool: OCCU 75°F, UNOC 85°F.

Installer Configuration

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.

StepPress Button(s)Displayed (Factory Default)Press or to selectComments
1TIME FWD TIME BACK0 ° F (room temperature)5 LO to 5 HIAdjusts temperature display higher or lower.
2TIME FWDEMR (ON) OFF or ON LOFF or ON LSelects EMR option ON or OFF or L ON.
3TIME FWD( ° F) ° C° F or ° CAdjusts temperature display to ° F or ° C.
4TIME FWDSET FAN (0) 0 - 6 HRS0 - 6 HRSSet Fan (one shot) option. Set the duration of a temporary fan option.
5TIME FWDBEEP (ON) OFFON or OFFTurns keypad beeper ON or OFF.
6TIME FWDHEAT FAST (OFF) ONOFF or ONOFF delays starting second stage for economy. ON starts second stage earlier with user intervention.
7TIME FWDCOOL FAST (OFF) ONOFF or ONOFF delays starting second stage for economy. ON starts second stage earlier with user intervention.
8TIME FWDTEMP OUT (OFF) ONOFF or ONEnables outdoor temperature sensor. Requires optional remote sensor connected to terminal OT and remote thermistor probe. Also displays outdoor temperature if active.
9TIME FWDFONE (Icon) (OFF) ONOFF or ONTelephone RUN program feature. Requires optional X10 system.
10TIME FWDCOMP RUN TIME (00) (Compressor run time in hours)PROGRAM RUN TIME FWDShows accumulated time compressor has run. To reset to 00, press and .
11TIME FWDAUX RUN TIME (00) (AUXILIARY run time in hours)PROGRAM RUN TIME FWDShows accumulated time AUXILIARY has run. To reset to 00, press and .

Keypad Lockout Menu (access from User Menu):

StepPress Button(s)Displayed (Factory Default)Press or to selectComments
1PROGRAM RUN TIME and TIME (hold for two seconds) FWD BACK TIME FWDPART LOCK (OFF) ONOFF or ONPartial Keypad lockout OFF or ON.
2LOCK (OFF) ONOFF or ONTotal Keypad lockout OFF or ON.

Troubleshooting

SymptomPossible CauseCorrective Action
No DisplayDead battery.Replace 2 AA alkaline; "BAT" flashes/continuous.
System Won’t Turn OnLockout active; no call; wiring.Wait 5 min; check setpoint/mode; verify wires.
Fan Runs ContinuouslyFAN ON.Set to AUTO.
Incorrect TemperatureWrong program/time.Check/adjust program, clock.
Power FailureNo battery.Reprogram; defaults 64°F heat/82°F cool.
Static DischargeHandling.Touch grounded object before handling.
Display BlankPower loss; dead batteries.Check R/C wiring; replace 2 AA batteries.
Battery Indicator FlashingLow batteries.Replace 2 AA; program retained.
No Heat/No CoolWrong mode; setpoint; wiring; no R/C.Set mode; adjust setpoint; verify wires/R C connected.
Fan Not RunningNo G wire; AUTO no call.Check G; set ON.
Short Cycling5-min lockout.Wait; override for testing: hold PRGM + TEMP at startup.
Program LostExtended power failure without batteries.Reprogram; defaults to 64/82°F.
Stages Not ActivatingSetpoint differential not met; config.Adjust setpoint 1°/3°/5°; check option switches.
Emergency Heat Not WorkingNot 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.

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