Troubleshooting
4-48
Samsung Electronics
4-3-10 Problem with EEV closure (2
nd
)
1. How to diagnose
1) During Cooling operation(Each of the below conditions have to be met for at least 20 minutes.)
2) During heating operation (must satisfy all conditions below)
2)
• When more than 2 indoor units are on Thermo On heating operation.
2)
• When average high pressure is over 1.76MPa
2)
• 5 minutes after finishing Safety Start
2)
• Keep Indoor units’ T(Eva_In)<T(Room) +37˚F/3˚C and T(Eva_Out)<T(Room) +37˚F/3˚C condition for more than 5 minutes
2. How to check
1) Check if the wire of electronic expansion valve is correctly connected to the PCB of indoor unit.
2) Check if the coil of electronic expansion valve is correctly plugged into the main body.
3) Check if there is any rust on the surface of the electronic expansion valve with naked eye then check the resistance between each
terminal to find any wire breaking or short circuit.
4) Press the RESET KEY (K3) of the outdoor unit then see if the same error occurs.
4)
- In case of closure problem, operate the indoor unit in which the error has occurred.
4)
- In case of opening problem, please do not operate the indoor unit in which the error has occurred.
5) If there is no problem with the above checkup items, replace the electronic expansion valve of the troubled indoor unit.
4)
- As electronic expansion valve replacement is tricky work that requires collecting refrigerants in all systems, please check the
above items before replacement.
Tcond, out - Tair, out > 37°F/3°C
OK
Tair, in - Teva, out > 39°F/4°C
NO
Tair, in - Teva, out > 39°F/4°C
NO
Compressor in operation &
Indoor unit operation & Thermo On
OK
Error details
Electrically operated valve closure breakdown
Summary of Contents for AVXCSH023/032/040CE
Page 114: ...0 02 Samsung Electronics 4 30...
Page 232: ...0 02 Samsung Electronics 5 20...
Page 250: ...0 02 Samsung Electronics 5 38...
Page 262: ...0 02 Samsung Electronics 5 50...
Page 263: ...5 51 Samsung Electronics 5 2 Outdoor Unit 5 2 1 RVXVHT075 100FE RD075 100VHXFA...
Page 264: ...Exploded Views and Parts List Samsung Electronics 5 52 RVXVHT075 100FE RD075 100VHXFA cont...
Page 267: ...Exploded Views and Parts List 5 55 Samsung Electronics 5 2 2 RVXVHT125FE RD125VHXFA...
Page 268: ...Exploded Views and Parts List Samsung Electronics 5 56 RVXVHT125FE RD125VHXFA cont...
Page 279: ...Exploded Views and Parts List 5 67 Samsung Electronics 5 2 5 RD040 050MHXCA...
Page 285: ...PCB Diagram 6 5 Samsung Electronics 6 1 4 Duct type Slim MAIN PCB...
Page 288: ...0 02 Samsung Electronics 6 8...
Page 289: ...PCB Diagram 6 9 Samsung Electronics 6 1 5 Duct type MSP MAIN PCB...
Page 291: ...PCB Diagram 6 11 Samsung Electronics 6 1 6 Duct type BIG MAIN PCB...
Page 295: ...PCB Diagram 6 15 Samsung Electronics 6 1 7 Wall mounted type Neo Forte without EEV MAIN PCB...
Page 298: ...0 02 Samsung Electronics 6 18...
Page 299: ...PCB Diagram 6 19 Samsung Electronics 6 1 8 Wall mounted type Neo Forte with EEV MAIN...
Page 302: ...0 02 Samsung Electronics 6 22...
Page 303: ...PCB Diagram 6 23 Samsung Electronics 6 1 9 Wall mounted type Vivace MAIN PCB...
Page 332: ...0 02 Samsung Electronics 7 16...