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The Goodman 0130M00264 Thermistor Relay is a genuine OEM temperature-sensing control designed for DCC300 series commercial packaged air conditioners, including the DCC300XXX4VXXYAA. This relay uses a thermistor input to monitor temperature and switch the associated circuit, enabling protective and staging functions that keep the system operating within safe thermal limits.
This genuine Goodman OEM relay matches the precise resistance curve, switching threshold, and terminal layout your DCC300 control system expects. Generic relays rarely replicate the thermistor characteristics exactly and can cause erratic staging or fault codes. For a temperature-dependent control, OEM is the dependable choice.
Easy to Moderate — Primarily an electrical swap: disconnect power, label and transfer wiring or connectors, and mount the replacement. No refrigerant work required. Comfortable DIYers can manage it, but verify wiring against the unit diagram.