The White Rodgers 1F95W-80 is a 7-day programmable multi-stage electronic digital thermostat with programmable fan from the Comfort-Set 90 Series for multi-stage heat/cool or heat pump systems. It features 7-day programming with 4 periods per day, automatic/manual changeover, Computed Energy Management Recovery (EMR), compressor short cycle protection, programmable blower control, and battery backup with 9V battery. Powered by 24 VAC; compatible with systems up to 3 stages heat/2 stages cool. 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 line voltage. Install away from drafts, direct sunlight, or heat sources for accurate sensing. Install a fresh 9V alkaline battery before programming.
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 uses solid-state microcomputer technology to provide precise time/temperature control. Features 7-day programming with four time/temperature settings per day, simultaneous heat/cool programs, up to 3 stages heat/2 stages cool, EMR, automatic changeover (selectable), compressor protection, programmable fan (PRG FAN), keypad lockout, °F/°C convertibility, backlit display. LCD display shows time/room temp/setpoint, up/down arrows, SYSTEM switch (HEAT/OFF/COOL/AUTO/EMER), FAN switch (ON/AUTO). Terminals: R (hot), C (common), G (fan), O/B (changeover), Y1/Y2 (compressor stages), W1/W2/W3 (heat stages), E (emergency).
Applications: Multi-Stage Heat Pump: Yes; Heat Pump with Aux/Emergency: Yes; Multi-Stage Conventional: Yes; Single-Stage Heat/Cool: Yes; Heat Only: Yes; Cool Only: Yes; Gas/Oil/Electric/Hydronic: Yes; Millivolt: No.
CAUTION! To prevent electrical shock/equipment damage, disconnect power at main fuse/circuit breaker until installation complete. Label wires prior to disconnection. If in doubt about wiring, consult qualified heating/air conditioning contractor.
WARNING! Do not use on circuits exceeding 20-30 VAC 50/60 Hz (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. Turn to OFF before battery replacement. Use 9V alkaline only. Handle to avoid static discharge.
A standard heat/cool thermostat consists of three basic parts: 1) Cover; 2) Base; 3) Subbase. Label each wire with terminal designation before disconnecting. Disconnect wires one at a time; do not let fall into wall.
Remove old thermostat. Mount new base level on wall, connect wires to terminals. For single transformer systems, install red jumper between RH and RC if needed. Push excess wire into wall, secure base, attach thermostat body. Power up and configure.
Batteries: Install 9V alkaline before programming; low battery flashes "BATTERY". Replace if flashing; program retained.
Terminal Designations: R (hot), C (common), G (fan), O/B (changeover), Y1/Y2 (compressor stages), W1/W2/W3 (aux heat stages), E (emergency).
Single Stage Heat/Cool: R to hot, C to common, Y1 to compressor, G to fan, W1 to heat.
Multi-Stage: Add Y2 for 2nd cool, W2/W3 for 2nd/3rd heat.
Heat Pump: Y1/Y2 compressor, O/B changeover (O cool, B heat), W1/W2/W3 aux, E emer.
CAUTION! RED jumper wire must be connected between RH and RC for single transformer systems. Refer to equipment manuals for specifics.
Restore power. Set SYSTEM to HEAT/COOL, FAN to ON/AUTO, adjust setpoint to test.
CAUTION! Do not operate below 50°F.
7-day programming with 4 periods per day. Factory preprogrammed; press RUN to start.
Factory Heat: Weekdays 6AM 70°F, 8AM 62°F, 5PM 70°F, 10PM 62°F; Weekends 6AM 70°F, 10PM 62°F. Cool: Similar with 78°F, 85°F, 78°F, 82°F.
Press HOLD + RUN for 5 seconds to enter menu. Use UP/DOWN to adjust, HOLD to advance.
| Menu Item | Default | Options | Comments |
|---|---|---|---|
| Ref | 0°F | ±5°F | Display temp adjustment |
| EMR | ON | OFF | Energy Management Recovery |
| °F/°C | °F | °C | Temperature scale |
| PRG FAN | OFF | ON | Programmable fan |
| Beeper | ON | OFF | Keypad sound |
| Lockout | OFF | Partial/Total | Keypad lock |
| Cycle Heat | 8 | 1-40 | Heat cycle rate |
| Cycle Cool | 14 | 1-40 | Cool cycle rate |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Display Blank | Power loss. | Check transformer/wiring; restore power. |
| CHECK SYS | System not responding. | Retries 3 times; check system, wiring. |
| CHECK STAT | Stuck key, sensor failure. | Press keys; power cycle 5 min. |
| Heating/Cooling Not Working | Wrong mode, setpoint, wiring. | Set correct mode/setpoint; verify wires. |
| Fan Not Running | AUTO no call; wiring. | Set ON; check G terminal. |
| Short Cycling | Cycle setting. | Adjust in menu. |
| Compressor Won't Start | 5-min lockout. | Wait; flashing COOL indicates lockout. |