AUX ASW-H09B5B4/FAR3DI-C3, Service Manual

Page: 40 / 101

37
(8) Eb –Indoor EE Failure
Explanation of
error
Cause: Many parameters need to be preset for the running of the indoor
unit of the air conditioner and such parameters are placed in a data
storage 8-feet chip, which is called "EEPROM" or "EE" for short. The
motor on the Indoor Unit main PCB can only work after reading the
data stored in EE and if not read, the failure code "Outdoor EE Failure"
will be indicated and raised in the indoor unit. Reasons for data not
being read are as follows:
1. wrong EE chip data format;
2. EE chip is broken;
3. bad contact of EE or fault of EE reading circuit;
4. backward installation of EE chip.
Inspection path: Indoor Unit main PCB.
Tools required
for inspection
/
Frequent
problematic part
Bad contact of EE, Indoor Unit main PCB.
Inspection
procedure and
key points
Replace the Indoor Unit main PCB directly.