Samsung AM JXVHGH Series Installation Manual page 113

❇ Symptoms for abnormal operation of the 4way valve
❇
- Abnormal noise during compressor operation, Increase in the suction temperature .
❇ Symptoms for abnormal operation of the Main EEV
❇
- It is not possible to control the superheat (SH)
- It is not possible to secure a DSH of higher than 20K
❇ For more information, see the troubleshooting in the service manual .
❇
• If service valve (ball valve) check is required, corresponding outdoor unit will display the error .
• If service valve (ball valve) check is required, auto detection mode will be terminated . Check service valve (ball valve) of
CAUTION
gas pipe and liquid pipe at the same time when checking service valve (ball valve) .
• When 4way valve, Main EEV detection is needed, run heating trial operation for more than 1 hour and analyze the data
to check for a problem .
• If there's frost formed in outdoor unit or the outdoor unit is operating in defrost operation, it may be hard to detect
problem normally . In this case, perform Trial operation or Forced defrost operation to eliminate the frost, and then
perform Auto Trial Operation again .
• If the operation range is not within guaranteed range, error may occur even though the product is normal .
• To replace a component or inspect the PBA, be sure to cut off the power supply first . If inspection must be performed
with the power supply on, exercise extra care to prevent electric shock .
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2017-03-24 오후 1:38:49