Test 3 : Replace Controller PCB
Test 2 : Check Indoor unit electric components
YES
YES
OK
NO
1. External cause 2. Defective connection of electric components 3. Controller PCB failure
Test 1-1 : Reset Power Supply and operate
Does Error indication show again?
Test 1-2 : Check external cause such as noise
Check if the ground connection is proper.
Check if there is any equipment that causes harmonic wave
near the power cable (Neon light bulb or any electronic
equipment which causes harmonic wave).
Note : EEPROM
EEPROM(Electronically Erasable and
Programmable Read Only Memory) is a non-
volatile memory which keeps memorized
information even if power is turned off. It can
change the contents electronically.
To change the contents, it uses higher
voltage than normal, and it can not change a
partial contents. (Rewriting shall be done
upon erasing the all contents.)
There is a limit in a number of rewriting.
Change Controller PCB.
Check all connectors.
(loose connector or incorrect wiring)
Check any shortage or corrosion on PCB.
Trouble shooting 9
INDOOR UNIT Error Method:
Indoor Unit Model Information Error
EEPROM Access Abnormal
Indoor unit controller PCB
When power is on and there is some below case.
When model information of EEPROM is oncorrect.
When the access to EEPROM failed.
Detective Actuators:
Detective details:
Indicate of Display:
Forecast of Cause:
02-24
Indoor Unit
Outdoor Unit
Operation lamp : 3 time Flash
ERROR CODE : [E : 32]
Timer lamp
: 2 time Flash
Monitor
A
B
C
D
E
F
: Light ON
: Light OFF
n : n time blinking
5
15
