Inspection & Trial Operation - Samsung DVM S ECO AM XMDG Series Installation Manual

Inspection & trial operation
AA
Measure to take when E503 error occurs
Is the service valve of the outdoor unit
Is 4way valve and main EEV operating
Is the quantity of the refrigerant
appropriate?
1. Run trial operation mode for more than 30 minutes
2. Run Fan mode for more than 10 minutes
3. Restart the auto trial operation
Symptoms for abnormal operation of the 4way valve
❇ ❇
-
Refrigerant noise is increased while compressor operatres and suction temperature remains over 20
low pressure's saturation temperature.
-
Temperature of Eva. in/out remains below 0
❇ ❇ Symptoms for abnormal operation of the Main EEV
-
Error on controlling degree of superheat of compressor inlet during heating operation.
: If there's operation error while the EEV is fully opened, suction superheat cannot be secured (below 0
discharge temperature of the compressor will be low. (DSH is below 10
: If there's operation error while the EEV is fully closed, low pressure will decrease and suction superheat will increase
excessively.
• If the service valve need to be detected, auto detection mode will end. Check both gas pipe and liquid
pipe service valves when detecting service valve.
Caution
• 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, run heating trial operation for more than 1 hour.
• If the opreation range is not within guaranteed range, error may occur even though the product is normal.
opened?
Yes
normally?
Yes
Yes
°
C during heating operation.
No.
Open the service valve of the outdoor unit
No.
Check the 4way valve and Main EEV
No.
Check for leakage. Perform vacuuming and
charge refrigerant
°
C)
°
C compared to
°
C) and
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