Troubleshooting by Remote Controller ESIE09-05
160 Troubleshooting
Outdoor Unit LA
c
Malfunction of power unit —
LC
c
Malfunction of transmission between inverter and control PC board 205
P1
c
High voltage of capacitor in main inverter circuit. 206
System
U0
w
Low pressure drop due to refrigerant shortage or electronic expansion
valve failure
207
U1
c
Reverse phase / open phase —
U2
c
Power supply insufficient or instantaneous failure 209
U3
c
Check operation is not completed. 211
U4
c
Malfunction of transmission between AHUs and outdoor units 212
U5
x
Malfunction of transmission between remote controller and AHU 214
U5
c
Failure of remote controller PC board or setting during control by remote
controller
214
U7
c
Malfunction of transmission between outdoor units —
U8
c
Malfunction of transmission between main and sub remote controllers
(malfunction of sub remote controller)
215
U9
c
Malfunction of transmission between AHU and outdoor unit in the same
system
—
UA
c
Excessive number of AHUs 215
UC
w
Address duplication of central remote controller 216
UE
c
Malfunction of transmission between central remote controller and AHU —
UF
c
System is not set yet 216
UH
c
Malfunction of system, refrigerant system address undefined 217
w: ON x: OFF c: Blink
Malfunction
code
Operation
lamp
Malfunction contents Page
Referred
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
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