Operating instructions

48_ Appendix
Appendix
TROUBLESHOOTING TIPS
If the unit has some problem to work properly, error codes will be displayed on the wired remote
controller.
The following table describes the explanation of the error codes.
Display Explanation
EVA Inlet temp sensor SHORT or OPEN
EVA Outlet temp sensor SHORT or OPEN
Wired remote controller temp sensor SHORT or OPEN
FRAM Read/Write Error(Wired remote controller data error)
Water Inlet temp sensor SHORT or OPEN
PHE Outlet temp sensor SHORT or OPEN
Water outlet (Back up Heater) temp sensor SHORT or OPEN
Water TANK temp sensor SHORT or OPEN
E904
Ref' In
Ref' Out
Water Outlet
E902
Tr1
Tw2
Tw1
Outdoor
Unit
Water inlet
E901
EVA inlet
E122
Wired remote controller
temp sensor
E653
Water tank
temp sensor
PHE
E123
E654