Thermistor; Troubleshooting - Samsung MIM-E03CN Installation Manual

Troubleshooting

If the unit has some problem to work properly, some error codes will be displayed on the controller.
The following table described the explanation of error codes on the LCD display.

Thermistor

Check its resistance. 10kohm@25 °C (Control kit), 200kohm@25 °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
Short- or open-circuit error of the room temperature sensor of the Zone 2 indoor unit (detected only when the
room thermostat is used)
Short- or open-circuit error of the room temperature sensor of the Zone 1 indoor unit (detected only when the
room thermostat is used)
Wired remote controller thermistor SHORT or OPEN
Water Inlet thermistor SHORT or OPEN
PHE Outlet thermistor SHORT or OPEN
Water outlet (Back up Heater) temp sensor SHORT or OPEN (The Backup heater for using)
Water TANK thermistor SHORT or OPEN
Outdoor Eva Inlet Temp Sensor SHORT or OPEN
Mixing Valve thermistor SHORT or OPEN
EVA inlet
E906
Tr1 Tw2
Ref' In
PHE
Ref' Out
Tw1
Outdoor Unit
Wired remote controller temp sensor
E653
Water Outlet
E902
Water inlet
E901
Explanation
Water tank temp sensor
E904
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