Service Manual

EEPROM access error
Serial communication error between
Outdoor Unit and branch box
Serial communication error between
Indoor Unit A and branch box
Serial communication error between
Indoor Unit B and branch box
Serial communication error between
Indoor Unit C and branch box
Remote control communication error
Serial communication error between
branch boxes
Serial communication error between
branch boxes
Model information error
Indoor Unit A, liquid pipe thermistor error
(CN309)
Indoor Unit A, gas pipe thermistor error
(CN309)
Indoor Unit A, EEV control error (CN305)
Indoor Unit B, EEV control error (CN306)
Indoor Unit C, EEV control error (CN307)
Indoor Unit B, liquid pipe thermistor error
(CN309)
Indoor Unit B, gas pipe thermistor error
(CN309)
Indoor Unit C, liquid pipe thermistor error
(CN310)
Indoor Unit C, gas pipe thermistor error
(CN310)
Power frequency error
Connected combination error
482010.06.25
BRANCH BOX
Branch box
identifying
display
Primary
unit
: (1)
Secondary
unit1
: (2)
Secondary
unit2
: (3)
When an error occurs, an error description
displays in the LED (No.401 - 405).
Lit
Flashing (number of flashing)
Unlit
(n)
Comment
Green Red
LED401 LED402 LED403 LED404 LED405
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)