Samsung Control Unit - Troubleshooting Tips

Appendix _47
ENGLISH
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.
Thermistor
• Check its resistance. 10kohm @ 24°C(control kit), 220kohm@24°C(DHW Tank, Solar)
• Check its location as shown at the diagram.
• Check its contact status with pipe.
• Final solution is to change parts.
Display Explanation
EVA Inlet thermistor SHORT or OPEN
EVA Outlet thermistor SHORT or OPEN
Wired remote controller thermistor SHORT or OPEN
FRAM Read/Write Error(Wired remote controller data error)
Water Inlet thermistor SHORT or OPEN
PHE Outlet thermistor SHORT or OPEN
Water outlet (Back up Heater) thermistor SHORT or OPEN
Water TANK thermistor SHORT or OPEN
Ref' In
Ref' Out
Water Outlet
E902
Tr1
Tw2
Tw1
Outdoor
Unit
Water inlet
E901
EVA inlet
E122
Wired remote controller
thermistor
E653
Water tank
thermistor
E904
PHE
E123
E654
RC120MHXGA_IB_E_34412A(1).indd 47 2012-02-08 오후 2:35:53