Repair Programmable Thermostat Wiring

My programmable thermostat has suddenly stopped communicating with the heater. I traced the problem to what looks like a loose or disconnected wire at the thermostat base, and now the system will only sit at a default temperature—no heat kicks on at all. I no longer have the original installation or user manual, so I need someone familiar with common programmable-stat wiring conventions (R, W, Y, G, C, etc.) who can: • Inspect the wiring at the wall plate and, if necessary, at the furnace control board • Reconnect or replace any damaged low-voltage wires • Confirm proper voltage, configure the thermostat, and run a quick functional test to be sure the heater cycles on and off correctly Please bring a multimeter and basic replacement wire or jumpers. Once everything is reattached and tested, I’d like a brief walkthrough of what you found so I know how to avoid the issue in the future. The job is complete when the thermostat reliably calls for heat and the furnace responds without errors.

ID do Projeto: 40159747

Localização: New Windsor, United States