Carrier 1F78151 Programmable Thermostat 5+2 Day

Product Description

The CARRIER 1F78151 is a digital setback thermostat with a 5+2 day programmable schedule, designed for residential heating and cooling systems. It operates on battery power, eliminating the need for a common wire and simplifying installation in older systems or retrofits where low-voltage wiring is limited. The 5+2 day format allows separate weekday and weekend temperature programs, giving building occupants control over comfort scheduling. Licensed HVAC technicians typically install this thermostat as a direct replacement in residential applications.

This thermostat is suited for residential forced-air, heat pump, or hydronic systems where setback scheduling is required. The battery-operated design makes it compatible with systems that lack a dedicated common wire, which is a frequent limitation in older residential installations. It is a practical choice for retrofit projects where running additional wiring is not feasible.

Key Features

• 5+2 day programmable schedule with separate weekday and weekend settings
• Battery-operated power source eliminates common wire requirement
• Digital display for clear temperature and program readout
• Setback programming helps manage heating and cooling cycles
• Designed for straightforward retrofit installation in residential systems

Compatibility

Designed as an OEM-style replacement or upgrade thermostat for residential heating and cooling systems requiring a battery-operated, low-voltage programmable control.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local codes and the system manufacturer guidelines. Always shut off power to the air handler or furnace at the disconnect or breaker before removing the existing thermostat and making wiring connections. Verify that the system wiring matches the terminal designations on the new thermostat sub-base before restoring power. Battery installation should follow the polarity markings inside the battery compartment.

Technical Specifications

• Programming Type: 5+2 Day Programmable
• Power Source: Battery Operated

Standard Information

• Brand: CARRIER
• Manufacturer Part Number: 1F78151