Samsung AM***MXWA Series Installation Manual

Contents

ENGLISH-9703 OthersInspection and trial operationMeasures to take when an E503 error occurs (When the “inspection required” message appears onthe S-NET pro report)1 Run trial operation mode for more than 30 minutes2 Run Fan mode for more than 10 minutes3 Restart the auto trial operationYesYesYesOpen the service valve of the outdoor unitnoIs the service valve of the outdoor unitopen?Check the 4way valve and Main EEVnoIs 4way valve and main EEV operatingnormally?Check for leakage Perform vacuuming andcharge refrigerantnoIs the quantity of the refrigerant correct?❋❋ 4-Way valve abnormal operation symptoms:- Refrigerant noise increases when the compressor is in operation and the inlet pipe temperature (H/P: Suction, H/R:Suction 2) remains over 10 °C when compared to the low pressure saturation temperature- During heating operation, the temperature of the EVa in/out maintains a calue of less than 0 °C❋❋ Main EEV abnormal operation symptoms:- During heating operation, an error occurs when controlling the degree of the superheat on the compressor inlet: If there is an operation error whilst the EEV is fully open, the target degree of superheat (1 °C) cannot be achieved(below 0 °C) and the discharge temperature of the compressor is low: If there is and operation error whilst the EEV is fully closed, the low pressure will decrease and the degree ofsuperheat on the compressor inlet increases excessively• If the service valve needs to be detected, corresponding outdoor unit will display the error• If the service valve needs to be detected, auto detection mode will end Check both gas pipe and liquid pipeservice valves when detecting service valve• When 4way valve, Main EEV detection is needed, run heating trial operation for more than 1 hour and analyzethe data to check for a problem• If the opreation range is not within guaranteed range, error may occur even though the product is normalCAUTION