ESIE11-05 Malfunction Codes and Description
Troubleshooting 105
System U0 k Outdoor unit low pressure drop due to refrigerant shortage or electronic
expansion valve failure
161
U1 l Reverse phase, open phase 162
U2 l Outdoor unit power supply insufficient or instantaneous failure 163
U3 l Outdoor unit check operation is not executed 166
U4 l Malfunction of transmission between hydrobox units and outdoor units 167
U5 l Hydrobox malfunction of transmission between remote controller and
hydrobox
168
U5 h Failure of remote controller PCB or setting during control by remote
controller
—
U7 l Malfunction of transmission between outdoor units —
U8 l Hydrobox malfunction of transmission between main remote controller and
sub remote controllers
169
U9 l Malfunction of transmission between hydrobox and outdoor units in the
same system
—
UA l Improper combination of hydrobox and outdoor unit and remote controller 170
UC k Address duplication of centralized controller —
UE l Malfunction of transmission between centralized controller and hydrobox
unit
—
UF l System is not set yet 171
UH l Malfunction of system, refrigerant system address undefined 172
k: ON h: OFF l: 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.
To Next Page
Loading...
