Troubleshooting Guide

TroubleshootingCH24,CH25

Display

Title

Cause of error

Check point & Normal condition

code

 

 

 

 

 

 

 

24

Press S/W Open

• Low / High press

• Check the connection of “CN_Press”.

 

 

S/W open.

• Check the components.

 

 

 

 

25

Input voltage

• Abnormal Input voltage

• Check the power source.

(140Vac , 300Vac .

• Check the components.

 

 

 

 

 

 

Check Point

• CH 24

1.Check the connection of “CN_PRESS”

2.Check the install condition for over load.

3.Check the SVC V/V open.

4.Check the leakage of refrigerant.

• CH 25

1.Check the power source.

2.Check the components

(Trans1, B/Diode, Diode, Resistance)

42Ceiling Cassette Air Conditioner

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Heat Controller DMC24CA-1, DMC36CA-1 manual Troubleshooting CH24, CH25