Trane Blower Coil Air Handler BCHE012DAA10A2

Acknowledge understanding of safety precautions

Disconnect all electrical power to the unit

Wear appropriate personal protective equipment (PPE)

Drain Pan Inspection and Cleaning

Check for evidence of standing water or condensate overflow

Identify and remedy the cause of standing water or overflow, if any

Power up a receiver with a 24 V transformer (user supplied)

Associate the sensor to a receiver of the same model intended for the job

Place the receiver at the desired location

Place or hold the sensor at the desired location

Press the Test button (S5) on the sensor

Observe the signal strength as indicated by LEDs and display

Warning! Hazardous Service Procedures!

Acknowledge understanding of safety warnings

Disconnect all electrical power including remote disconnects

Discharge all energy storing devices such as capacitors

Follow proper lockout/tagout procedures

Is a qualified licensed electrician present for live electrical work?

Unit Inspection and Maintenance

Inspect the unit casing for chips and corrosion

Initiate signal strength test by pressing the Test button on the sensor

Check signal strength indication on Models WZS

Observe LED1, LED2, and LED3 on the sensor

Observe LED1, LED2, and LED3 on the receiver

Check signal strength indication on Model WDS

Observe test symbols on the sensor display

Observe LED1, LED2, and LED3 on the receiver

Ensure the following conditions are met before starting

Disconnect all electrical power to the unit

Disconnect piping from coil headers

Is the opposite side panel removal necessary for sensor or screw access?

Sensor and Switch Disconnection

Disconnect the following switches and sensors