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General| Type | Non-Programmable |
|---|---|
| Stages | 1 Heat/1 Cool |
| Display | Digital |
| Compatibility | Single Stage Systems |
| Power Source | Battery |
| Programmable | No |
| Temperature Range | 45°F - 90°F |
| Voltage | 24V |
Assemble necessary tools like screwdrivers and wire cutters/strippers for installation.
Failure to follow instructions could cause personal injury, property damage, or operational issues.
Illustrates the thermostat base with terminal designations and mounting details for reference.
Advises on safe handling and disposal of mercury cells if the replaced unit contains them.
Emphasizes labeling wires before disconnecting and ensuring they do not fall back into the wall.
Alerts users about voltage hazards, short-circuit risks, and NEC code compliance for installation.
Details the W906 jumper setting for controlling the blower with auxiliary or emergency heat systems.
Instructions for changing the temperature display unit from Fahrenheit to Celsius by clipping W904.
Guides on selecting fast or slow cycle rates using the W905 jumper for temperature control.
Explains how to set the O/B switch for heat pump changeover relay energization in COOL or HEAT.
Informs about the location and function of the 2 'AAA' batteries for memory retention during power loss.
Provides steps for securely attaching the thermostat base to the wall using mounting screws and anchors.
Details connecting wires to terminal screws and routing them carefully to prevent shorts.
Advises touching the thermostat casing to discharge static before interacting with controls.
Steps to test the fan operation by switching the fan control to ON and AUTO positions.
Warns against running the compressor without adequate oil heater operation or system readiness.
Procedure for testing heating operation in HEAT and EMER modes, including auxiliary heat activation.
Steps to test cooling operation by setting the system to COOL and adjusting temperature settings.
Identifies and explains the function of the thermostat's up/down arrows, FAN, and SYSTEM switches.
Describes the meaning of various icons like Flame, Snowflake, EMER, and BATT on the thermostat display.
Instructions on how to enter the configuration menu by holding specific buttons while the system is OFF.
Explains the conditions for second stage heat activation based on temperature difference and FA setting.
Details the Compressor Lockout feature (CL ON/OFF) to protect the compressor from rapid cycling.
Allows adjustment of the displayed room temperature up to +/- 3 degrees to match user preference.
Option to enable or disable the display backlight for improved visibility in low light conditions.
Procedure for resetting the thermostat by pressing buttons simultaneously to resolve display or erratic operation issues.
Recommends replacing batteries annually for optimal performance, especially when the 'BATT' indicator appears.
Addresses common problems like no heating, cooling, or fan operation, listing possible causes and corrective actions.
Diagnoses issues where heating, cooling, or fan modes run continuously, suggesting wiring checks and system service.
Explains how thermostat location, system size, or jumper settings influence cycle rate and how to adjust it.
Guides on adjusting the thermostat's thermometer reading by +/- 3 degrees for accuracy.
Provides solutions for blank displays or unresponsive keypads, typically involving voltage spikes or static discharge.
