Tech Corner for YORK^® Commercial HVAC Equipment

YORK^® Smart Equipment (SE) boards must be programmed in order for the board to be able to properly control the unit.

This document will describe how to navigate the SE controller display and how to reconfigure a replacement SE controller (Version 4.0) that has just been installed when a BACKUP was not performed on the original SE controller.

If the fault code can no longer be seen on the display, this document describes a method in which the fault code can be retrieved.

This document is a guide for installing Rev 4.1.1.3 FW.

This document is a guide for installing Rev 4.4.1.3 FW.

Power Exhaust is an additional fan installed in the unit to pull air out of the building and dump it outside.

Relearn is a function to tell the board to forget anything that it thinks it has connected to it and go out and look to see what is really hooked up to it.

During startup or TAB (Test and Balance) it is common for the motor sheave to be adjusted further closed to increase CFM, or adjusted further open to decrease CFM.

Evaporator coil sensors are factory installed on every unit manufactured since 2015. Condenser coil sensors are installed on every Heat Pump unit manufactured since 2015.

YORK^® units have a secondary safety built into the SE control that monitors supply air temperature and will drop stages of cooling or heat if the supply temperature exceeds the setting in the SE control.

This document is designed to assist and guide a trained technician or engineer to diagnose and troubleshoot the Smart Equipment Controller alarms.

This document is designed to assist and guide a trained technician or engineer to diagnose and troubleshoot the Smart Equipment Controller alarms.

The York SSE Controller display Home screen will display the current unit Mode and can display up to 5 alarms that may be present.

Lockouts can be broken by cycling power or performing the following.

This document is designed to assist and guide a trained technician or engineer to diagnose and troubleshoot the Smart Equipment Controller alarms.

The VFD requires 2 inputs to operate at the correct speed.

Typical Predator/Pro unit control panel with both transformers marked.

An indoor air quality (IAQ) sensor monitors carbon dioxide (CO2) levels in the space and can put the unit into demand ventilation to lower the CO2 levels back to acceptable limits.

An indoor air quality (IAQ) sensor monitors carbon dioxide (CO2) levels in the space and can put the unit into demand ventilation to lower the CO2 levels back to acceptable limits.

Sensor locations, wiring, part numbers, and setup reference sheet.

For the best unit performance, it is recommended by the manufacturer to use a thermostat that has the capability of controlling the number of available stages for both heating and cooling.

This document provides an overview of the controls system components, supported features, and operating modes of packaged units and split system units with a Smart Equipment™ controller.