Installation Manual

En-20
¶
Lit
(n) Flashing (number of fl ashing)
‡
Unlit
Normal status
Green Red
Comment
LED401 LED402 LED403 LED404 LED405
¶‡‡‡‡
The branch box is functioning properly.
Error status
Green Red
Error description
LED401 LED402 LED403 LED404 LED405
¶¶¶¶¶
Connected combination error
¶¶¶¶‡
Power frequency error
¶¶¶‡¶
Branch
box
identifying
display
Primary
unit
:
(1)
Secondary
unit1
: (2)
Secondary
unit2
: (3)
(1)
‡‡‡
EEPROM access error
(2)
‡‡‡
Model information error
(3)
‡‡‡
• Serial communication error between outdoor unit and branch
box
• Serial communication error between branch boxes
(4)
‡‡‡
Serial communication error between branch boxes
(5)
¶‡‡
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
(6)
¶‡‡
Indoor Unit A, liquid pipe thermistor error (CN309)
‡¶‡
Indoor Unit B, liquid pipe thermistor error (CN309)
‡‡¶
Indoor Unit C, liquid pipe thermistor error (CN310)
(7)
¶‡‡
Indoor Unit A, gas pipe thermistor error (CN309)
‡¶‡
Indoor Unit B, gas pipe thermistor error (CN309)
‡‡¶
Indoor Unit C, gas pipe thermistor error (CN310)
(8)
¶‡‡
Indoor Unit A, EEV control error (CN305)
‡¶‡
Indoor Unit B, EEV control error (CN306)
‡‡¶
Indoor Unit C, EEV control error (CN307)
(9)
‡‡‡
Remote controller communication error
7. TEST RUN AND CHECK LIST
Conduct the check run and test run according to the Installation Manual of the outdoor unit.
Check the following items before conducting the check run and test run.
Check Item Check Column Troubles in the event of failure
Has the branch box been installed fi rmly? Drop, vibration or noise
Was there any refrigerant leak found through a refrigerant
leak inspection?
Function stop, no cooling or no heating
Has the insulation been perfectly installed on the pipes and
pipe joints without any gap?
Water leak
Has the piping been installed properly? Unable to operate
Has the wiring been installed properly? Unable to operate
Was power cable that meets the specifi cations used? Fire or unable to operate
Were breakers that meets the specifi cations used? Fire or unable to operate
Has proper grounding been performed? Electric shock or fi re
8. MALFUNCTION DIAGNOSTICS
When an error occurs, an error description displays in the LED (No. 401 ~ 405).
9380120001-06 EN.indd 209380120001-06 EN.indd 20 6/16/2558 BE 8:20 PM6/16/2558 BE 8:20 PM