Haier 1U35S2SM1FA-2 Service Manual page 34

Wall mounted type

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10.3.2 EEPROM abnormal

★ □ ★/ E4: Indoor EEPROM error

Indoor Display

■ ★ ■/ F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times

Indoor display

Method of

The Data detected by the EEPROM are used to determine MCU

Malfunction

Detection

Malfunction

When the data of EEPROM is error or the EEPROM is damaged

Decision

Conditions

Supposed

Causes

Troubleshooting

* Caution Be sure to turn off power switch before connect or disconnect connector, or parts

damage may be occurred.

Faulty EEPROM data

Faulty EEPROM

Faulty PCB

Replace the indoor or outdoor mainboard.

Domestic air conditioner

Service diagnosis

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F series