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General| Brand | Carrier |
|---|---|
| Model | P374-1100 |
| Category | Thermostat |
| Language | English |
Gather essential tools like a flat blade screwdriver and wire cutter/stripper before commencing installation.
Carefully disconnect wires from the old thermostat, taping and marking ends for accurate reconnection.
Provides a chart mapping old thermostat terminal designations to new thermostat connectors for various functions.
Illustrates wiring configurations for 5-wire systems, including cooling and heating stages.
Illustrates wiring configurations for 4-wire systems, including cooling and heating stages.
Illustrates wiring configurations for 6-wire systems, covering cooling and heating stages.
Illustrates wiring configurations for 7-wire systems, including multi-stage cooling and heating.
Illustrates wiring configurations for heat pump systems, including 5-wire setups.
Steps to recalibrate the thermostat to accommodate specific room temperature needs.
Steps to verify proper operation of heating, cooling, and fan modes after installation.
Addresses symptoms like dim display or repeated AC cycling due to insufficient power.
Diagnoses AC issues possibly caused by compressor timer lockout or setpoint limits.
Troubleshoots a blank thermostat display due to lack of proper power.
Addresses heating system failures possibly caused by low setpoints.
Resolves issues where heat comes on during cooling requests for heat pumps.
Addresses problems where both heat and cool engage, often due to incorrect system configuration.
