Multi Zone Service Manual - General

5. Trouble Shooting

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Only for training and service purposes

Indoor EEPROM Check

Sum Error

• Check sum error

1. Check the poor soldering

2. Check the insertion condition of the EEPROM

3. Check the PCB Connection

Display

code

Title Cause of error Check point & Normal condition

Check Point

1. Check the EEPROM Direction

2. If the EEPROM value & the Program value are not matched, the Code is Displayed

3. After Checking the connection and Insertion, replace the PCB or Option PCB