Carrier 48/50PG20-28, 48/50HG014-028 Troubleshooting, Dirty LED, Power LED, Trouble LED

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CRSMK

To perform a controller alarm test:

1.Press the controller’s test/reset switch for seven seconds. Verify that the controller’s Alarm LED turns on.

2.After performing a controller alarm test, reset the sensor by pressing the test/reset switch for two seconds. Verify that the controller’s Alarm LED turns off.

Controller Dirty Test

The controller dirty test checks the controller’s ability to initiate a sensor dirty test and indicate its results.

To perform a sensor dirty test, press the controller’s test/reset switch for two seconds. Verify that the controller’s Trouble LED flashes.

TROUBLESHOOTING

Dirty LED

Sensor’s Dirty LED is Flashing

Clean the sensor assembly as described in Cleaning Procedure.

Power LED

Sensor’s Power LED is OFF

1.Check the controller’s Power LED. If it is off, determine why the controller does not have power and make the necessary repairs.

2.Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required.

Controller’s Power LED is OFF

1.Make sure the circuit supplying power to the controller is operational. If not, make sure JP2 and JP3 are set correctly on the controller before applying power.

2. Verify that power is applied to the controller’s supply in- put terminals. If power is not present, replace or repair wir- ing as required.

Trouble LED

Controller’s Trouble LED is On

1.Check the Trouble LED on each sensor connected to the controller. If a sensor’s Trouble LED is on, determine the cause and make the necessary repairs.

2.Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required.

Controller’s Trouble LED is Flashing

1.One or both of the sensors is 100% dirty. Determine which sensor’s Dirty LED is flashing.

2.Clean the sensor assembly as described in Cleaning Procedure.

Sensor’s Trouble LED is On

1.Check the sensor’s Dirty LED. If it is flashing, the sensor is dirty and must be cleaned.

2.Check the sensor’s cover. If it is loose or missing, secure the cover to the sensor housing.

3.Replace sensor assembly.

Sensor’s Trouble LED is On But Controller’s Trouble LED is Off

Remove JP1 on the controller.

Copyright 2007 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231

Printed in U.S.A.

Edition Date:7/07

Catalog No:48/50H,P---24SI

 

 

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Replaces:48/50H,P--- 10SI

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Contents Safety Considerations Table of ContentsGeneral Check Package Contents InstallationReturn Air Smoke Detector Installation CRSMKDET001D00 Smoke Detector Supply and Return Sensor Tube Supply Air Smoke Detector Installation CRSMKSUP001D00 Sampling Tube Support BracketSmoke Detector Wiring on Electro-Mechanical Control Units Sensor Installation CRSMKSEN001A00 Make sure sampling tube holes are aligned facing UPConfiguring the ComfortLinkt Controller OperationCleaning Procedure MaintenanceRecommended Service Schedule Sensor TestsDirty LED TroubleshootingPower LED Trouble LED

48/50PG20-28, 48/50HG014-028 specifications

The Carrier 48/50HG014-028 and 48/50PG20-28 are part of Carrier's extensive lineup of commercial and industrial HVAC systems, designed for optimal performance, energy efficiency, and reliability. These units are particularly known for their robust construction and advanced technology, making them suitable for a variety of applications, including large commercial buildings, manufacturing centers, and other facilities that require consistent climate control.

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In conclusion, the Carrier 48/50HG014-028 and 48/50PG20-28 series are engineered to deliver exceptional performance, energy efficiency, and reliability. Their combination of advanced technologies, ease of maintenance, and commitment to sustainability makes them a top choice for businesses seeking effective climate control solutions. With a focus on innovation and customer satisfaction, Carrier continues to set the standard in the HVAC industry.