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PCB(Inverter) & 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 1 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 PCB assembly 1 normal?
No
Yes
Replace PCB assembly 1
Yes
MAIN PCB assembly 1 normal?
No
Replace MAIN PCB assembly 1
Check Point
- Check the EEPROM Check sum & Direction
* AHBW056A0/AHBW076A0/AHBW096A0
WARNING
Before checking PCB(Inverter) or each outdoor electric parts, wait for 3 minutes after the power is off. When measuring at standby
state of power supply, after checking the measurement mode of the meter, be careful of the short-circuits with other parts.
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