Application Engineering

 

 

 

 

B U L L E

T

I

N

AE8-1385

Table 2 – CoreSense Diagnostics LED Troubleshooting Information

Flash Code number corresponds to the number of LED flashes, followed by a pause and then repeated.

TRIP and ALERT LEDs flashing at same time means control circuit voltage is too low for operation (brown-out conditions).

Status

Description

 

 

Troubleshooting Information

Solid Green “RUN”

Module has power and

Supply voltage is present at module terminals

operating normally

 

 

 

 

 

 

1.

Compressor protector is open

 

 

 

•

Check for high head pressure

 

Thermostat demand signal Y is

 

•

Check compressor supply voltage

 

2.

Outdoor unit power disconnect is open

Solid Red “TRIP”

present, but the compressor is

3.

Compressor circuit breaker or fuse(s) is open

 

not running

 

4.

Broken wire or connector is not making contact

 

 

 

 

5.

High pressure switch open if present in system

 

 

6.

Compressor contactor has failed open

“ALERT” Flash Codes

1.Low refrigerant charge

2.Evaporator blower is not running

•Check blower relay coil and contacts

•Check blower motor capacitor

•Check blower motor for failure or blockage

•Check evaporator blower wiring and connectors

•Check indoor blower control board

•Check thermostat wiring for open circuit

 

Long Run Time

3. Evaporator coil is frozen

Yellow “ALERT”

Low Refrigerant Charge

• Check for low suction pressure

Flash Code 1

Compressor is running extremely

•

Check for excessively low thermostat setting

 

long run cycles

•

Check evaporator airflow (coil blockages or return air filter)

•Check ductwork or registers for blockage

4.Faulty metering device

•Check TXV bulb installation (size, location and contact)

•Check if TXV/fixed orifice is stuck closed or defective

5.Liquid line restriction (filter drier blocked if present in system)

6.Thermostat is malfunctioning

•Check thermostat sub-base or wiring for short circuit

•Check thermostat installation (location, level)

1.Condenser fan is not running

•Check fan capacitor

•Check fan wiring and connectors

 

Compressor (Pressure) Trip

• Check fan motor for failure or blockage

Yellow “ALERT”

High Refrigerant Charge

2. High head pressure

Flash Code 2

Discharge pressure out of limits

•

Check high pressure switch if present in system

 

or compressor overloaded

•

Check if system is overcharged with refrigerant

•Check for non-condensable in system

3.Condenser coil poor air circulation (dirty, blocked, damaged)

4.Return air duct has substantial leakage

 

Pressure Switch Cycling

1.

Time delay relay or control board defective

Yellow “ALERT”

Compressor is running only

Flash Code 3

briefly due to pressure switch

2.

If high pressure switch present go to Flash Code 2 information

 

cycling

 

 

© 2011 Emerson Climate Technologies

10

Printed in the U.S.A.

 

Page 9 Page 11
Page 10
Image 10
Emerson AE8-1385 specifications CoreSense Diagnostics LED Troubleshooting Information
Page 9 Page 11

AE8-1385 specifications

The Emerson AE8-1385 is a cutting-edge automation solution designed to enhance operational efficiency and reliability in various industrial applications. This advanced device exemplifies Emerson’s commitment to innovation, boasting features that cater to the demands of modern industries, specifically in process control, monitoring, and data acquisition.

One of the standout features of the AE8-1385 is its robust communication capabilities. It supports multiple communication protocols, including Modbus, Ethernet/IP, and Profibus, allowing it to seamlessly integrate with existing systems and facilitate real-time data exchange. This flexibility ensures that users can connect the AE8-1385 to a wide variety of equipment and software, promoting interoperability across the production environment.

In terms of technology, the AE8-1385 integrates state-of-the-art sensing and actuation methods to provide accurate and reliable measurements. Its advanced signal processing capabilities enhance the clarity of data collected from various sensors, enabling precise control and monitoring of critical processes. The device is engineered with high-quality materials, ensuring durability and performance in harsh industrial settings.

Additionally, the AE8-1385 features a user-friendly interface that simplifies operation and reduces training time for personnel. The intuitive design allows operators to access vital information quickly, making modifications to settings or responding to alarms easier and more efficient. This focus on usability not only enhances productivity but also improves response times in critical situations.

Another essential characteristic of the AE8-1385 is its scalability. It can be deployed in small-scale applications or expanded to support larger, more complex systems as operational requirements evolve. This adaptability makes it a valuable investment for companies looking to future-proof their automation solutions.

The AE8-1385 is also equipped with advanced security features that protect against unauthorized access and data breaches, an essential consideration in today’s increasingly interconnected industrial landscape. This added layer of security ensures that sensitive operational information remains confidential and secure.

In summary, the Emerson AE8-1385 is an innovative automation solution that combines versatile communication capabilities, advanced sensing technology, user-friendly design, scalability, and robust security features. Its integration into industrial processes can lead to enhanced efficiency, improved data management, and increased operational reliability, making it an ideal choice for industries prioritizing modernization and performance.
Top Page Image Contents