Easy Street FAQ: CCU Backup Temperature Sensor Check

| Overview

This check verifies the CCU's built-in temperature sensor.

| When it passes 

A PASS means the CCU's temp sensor is working correctly and reading within acceptable ranges when compared to the average zone temps.

| When it fails

A FAIL means the CCU's temperature sensor data was not reading correctly. It was either out of acceptable temperature range or showed abnormal data when compared to the average zone temps. For example, in the example below, the CCU temp was reading extremely high, which signals a bad sensor placement.

| Common causes

This typically occurs due to one of two reasons:

1. Bad sensor: CCU sensor is disconnected or damaged
2. Incorrect location: CCU placement issue causing inaccurate readings

| Next Steps

1. Check sensor wiring: Is the temp sensor correctly connected to the CCU terminals?
2. Verify CCU location: Is the temp sensor located in a region with high solar irradiance? Is it close to the discharge air?