Troubleshooting Guide

TroubleshootingCH03

Display

Title

 

Cause of error

 

Check point & Normal condition

code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Communication

Open / Short

 

 

 

• Connection of wire

03

 

 

 

• Main PCB Volt. DC12V

Wired R/C

Wrong connection

 

 

 

• Noise interference

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wired R/C

 

 

Indoor Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12V

 

S GND

12V

S GND

12Vdc

V

Check the Volt.

12Vdc

V

Check the Volt.

Check Point

1.Check the wire connection. (Open / Short) Repair the connection

2.Check the soldering state of connector. (Soldered poorly) Repair or Change the PCB.

3.Check the volt. Of main PCB power source. (DC 12V, DC 5V) Repair or Change the main PCB.

4.Check the installation of wired remote controller. (Noise interference) Adjust the state of installation

Service Manual 39

Page 39
Image 39
Heat Controller DMC36CA-1, DMC24CA-1 manual Troubleshooting CH03