Troubleshooting
4-56 Samsung Electronics
4-4-11 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) t8IFONPSFUIBOJOEPPSVOJUTBSFPO5IFSNP0OIFBUJOHPQFSBUJPO
2) t8IFOBWFSBHFIJHIQSFTTVSFJTPWFSLHDN
2
2) tNJOVUFTBGUFSGJOJTIJOH4BGFUZ4UBSU
2) t,FFQ*OEPPSVOJUTh5&WB@*O53PPN$BOE5&WB@0VU53PPN$DPOEJUJPOGPSNPSFUIBONJOVUFT
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 u
nit.
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 > 3°C OK
Tair , in - Teva, out > 4°C NO
Tair , in - Teva, out > 4°C NO
Compr essor in operation &
Indoor unit operation & Thermo On
OK
Error details Electrically operated valve closure breakdown
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