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Symptoms for abnormal operation of the 4way valve
- Abnormal noise during compressor operation, Increase in the suction temperature.
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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
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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 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 deforst 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 opreation 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.
CAUTION
Summary of Contents for DVM S AM080FXVAGH
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