Arkansas HVACR NewsMagazine January 2024

HVACR NewsMagazine January 2024

Tech News

If the previous steps did not correct the problem, be sure to test for the correct voltage between the hot and common wire. If the correct voltage is present from the transformer, then it is likely that the thermostat itself is damaged and needs to be replaced. The Thermostat itself If the wires, the batteries, and power to the package unit are not the issues, there is a chance that the problem is with the thermostat itself. In this case, replace the thermostat.

The Thermostat Wiring

If the batteries are not the problem, it is likely that the thermostat wiring has been damaged. Since a portion of the thermostat wiring is outside, it is susceptible to damage from the elements and may even be chewed on by animals. It is important to thoroughly inspect the wiring, as it may need to be replaced. Depending on how many individual wires are in the thermostat wire jacket, it may be possible to switch a damaged wire with a spare wire, if an extra wire is available. If this is done, be sure to switch the damaged wire with the spare both in the unit and at the thermostat.

Problem #3: Seized Inducer Motor or the Inducer Motor Capacitor is Bad

The inducer motor, which is responsible for forcing the exhaust fumes out of the unit is a critical component to the heating process, but it can stop operating

properly and prevent the system from running. To determine if the inducer has failed or has stopped working properly, first make sure that it has power. If the inducer motor has power, but the motor is not starting or moving, test the inducer motor capacitor. ( Note : A shaded pole inducer motor does not have a capacitor. )