Multi Zone Service Manual - General

5. Trouble Shooting
- 77 -
Only for training and service purposes
60
Inverter PCB & Main
EEPROM check sum error
EEPROM Access error
and Check SUM error
1. EEPROM contact defect/wrong insertion
2. Different EEPROM Version
3. ODU Inverter & Main PCB assembly damage
Display
code
Title Cause of error Check point & Normal condition
n Error Diagnosis and Countermeasure Flow Chart
Is EEPROM insertion normal?
No
Yes
Recheck power and installation condition
1.Check EEPROM insert direction/connection condition
2.Check EEPROM Check SUM
→ Replace if abnormality found
Is inverter PCB assembly normal?
No
Yes
Replace inverter PCB assembly
Yes
MAIN PCB assembly normal?
No
Replace MAIN PCB assembly
Check Point
- Check the EEPROM Check sum & Direction
<MAIN P
C
B>
<EEPR
O
M Direction
C
heck Point>