Troubleshooting; Error Codes - Samsung AE RXEDEG Series Installation Manual

Troubleshooting

• Incorrect handling of thermostat, safety valve or other valves may lead to tank rupture. When servicing the unit
follow instructions carefully:
WARNING
• Always turn off main power supply when water supply is being shut off.
• Test the free operation of the safety valve regularly by opening the valve ensuring the water flows freely.
• Electrical connection and all servicing of the electrical components should only be carried out by an authorized
electrician.
• Fitting and all servicing of plumbing fixtures should only be carried out by an authorized installer.
• When replacing the thermostat, safety valve or any other valve or part supplied with this unit, use only approved
parts of the same specification.

Error codes

If the unit has some problems and does not work normally, error code is shown on the OUTDOOR UNIT main PBA or LCD
of the wired remote controller.
Display
101 Hydro Unit / Outdoor Unit communication connection error
Short- or open-circuit error of the room temperature sensor of the Zone 2
120
indoor unit (detected only when the room thermostat is used)
Short- or open-circuit error of the room temperature sensor of the Zone 1
121
indoor unit (detected only when the room thermostat is used)
122 EVA Inlet temp sensor SHORT or OPEN
123 EVA Outlet temp sensor SHORT or OPEN
162 EEPROM Error
198 Error of Terminal Block's Thermal Fuse(Open)
201 Hydro Unit / Outdoor Unit communication error(Matching error)
202 Hydro Unit / Outdoor Unit communication error(3 min)
203 Communication error between INVERTER and MAIN MICOM (4 min)
221 Outdoor Unit air temperature sensor error
231 Condenser temperature sensor error
251 Discharge temperature sensor error
320 OLP sensor error
403 Detection of freezing (During cooling operation)
Protection of Outdoor Unit when it is overload (during Safety Start, Normal
404
operation state)
407 Comp down due to high pressure
Explanation
ENGLISH-50
Error Source
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit
Hydro Unit/Ourdoor Unit
Hydro Unit/Ourdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit