Assessments - 3, GPA: 3.7
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• Check refrigerant stagnation in compressor. • Check MG-SW or OCR. Temperature change of TK2 could not be detected though compressor 2 started the operation. • Check TK2 sensor coming-off. • Check characteristics of TK2 sensor resistance value. • Check TK1, TK2, TK3, and TK4 misconnection. • Check SV3E valve operation. • Check capillary clogging of oil equalization circuit and check stop valve operation. • Check refrigerant stagnation in compressor shell. • Check MG-SW or OCR. Temperature change of TK3 could not be detected though compressor started the operation. • Check TK3 sensor coming-off. • Check characteristics of TK3 sensor resistance value. • Check TK1, TK2, TK3, and TK4 misconnection. • Check SV3E valve operation. • Check capillary clogging of oil-equalization circuit and check valve operation. • Check refrigerant stagnation in compressor shell. • Check MG-SW or OCR. Temperature change of TK4 could not be detected though compressor started the operation, or the difference from other TK sensor changed for a constant time only within the specified range. • Check TK4 sensor coming-off. • Check characteristics of TK4 sensor resistance value. • Check TK1, TK2, TK3, and TK4 misconnection. • Check SV3E valve operation. • Check capillary clogging of oil-equalization circuit and check valve operation. • Check refrigerant stagnation in compressor shell. • Check MG-SW or OCR. L03 — — Indoor Duplicated indoor center units Corresponding unit only stops. There are multiple center units in a group. • Check indoor address. • Check the change of remote controller connection (Group/individual) after indoor address setup. L04 L04 — I/F Duplicated outdoor line address All stop Line address setup is duplicated against the outdoor unit in different refrigerant pipe system. • Check line address. L05 — — I/F Duplicated indoor units with priority (Displayed on indoor unit with priority) All stop Indoor units with priority were duplicated. • Check display of indoor unit with priority. MG-SW : Magnet Switch, OCR : Over-current Relay Check code Detected position Check code name Status Error detection condition Check item (position) Main remote controller Outdoor 7-segment display Check code Auxiliary code L06 L06 No. of indoor units with priority I/F Duplicated indoor units with priority (Displayed on the unit other than indoor unit with priority) All stop Indoor units with priority were duplicated. • Check display of indoor unit with priority and outdoor unit. L07 — — Indoor Group line in individual indoor unit. Corresponding unit only stops. At least one indoor unit connected to a group existed in the individual indoor units. • Check indoor address. L08 L08 — Indoor Indoor group / address unset Corresponding unit only stops. Address was not yet set up. • Check indoor address. Note) After installation, this code is displayed when the power is firstly turned on. L09 — — Indoor Indoor capacity unset Corresponding unit only stops. Indoor u...
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