York YHKMXH009BARX-FX Service Manual

YJU3YH019BARXA-X YJU4YH025BARXA-X YJU4YH030BARXA-X YJU5YH034BARXA-X2011.2.22PRODUCT DIAGNOSIS PROCEDUREMalfunctionCode Diagnosis MalfunctionCode Diagnosis21Module overcurrent /202318 Malfunction of module temp.sensorModule operated overloadIPM overcurrent or short circuitCommunication failure between Module and ECUCommunication cables broken or not well connected.Module current detect circuit malfunctionMCU resetModule low or high DC voltage (under 192V or above 375V)Discharging temperature overheating.Lack of refrigerant,ambient temperature too high or PMVs blocked.17 4-way valve switching failureMalfunction of gas pipe temp. sensor for indoor unit AMalfunction of gas pipe temp. sensor for indoor unit CMalfunction of gas pipe temp. sensor for indoor unit DMalfunction of gas pipe temp. sensor for indoor unit EMalfunction of liquid pipe temp. sensor for indoor unit AMalfunction of liquid pipe temp. sensor for indoor unit BMalfunction of liquid pipe temp. sensor for indoor unit CMalfunction of liquid pipe temp. sensor for indoor unit DMalfunction of liquid pipe temp. sensor for indoor unit E9101112131512456Malfunction of the DC fan motorMalfunction of defrosting temp. sensorMalfunction of compressor suction temp. sensorMalfunction of module temp.sensorMalfunction of condensing temp. sensorMalfunction of ambient temp. sensorMalfunction of compressor discharge temp. sensorMalfunction of piping temp. sensorSystem high pressure switch offSystem low pressure switch offSystem low pressure protection.Refrigerant shortage,Low defrosting temp., or malfunction of fan motor.Faulty of outdoor unit EEPROMCommunication failure between indoor&outdoor unitCompressor overcurrentInput overcurrentDiagnosis using the Numeral Light Indicator0150512528PrecautionsFor Adding Refrigerant1.This system must use refrigerant R410A.2.Add refrigerant 20g per meter when thetotal piping length exceeds the standardvalue,but make sure that the total liquidpiping length should be less than themax value.BTU Std. Value Max Value2400019000 30 5030 608System high pressure protection.Refrigerantoverabundance,High condensing temp. ormalfunction of fan motor.Notes:1.When using this product,you need not toset the address.But the L/N wiresbetween indoor & outdoor units must becorresponded,or there will becommunication failure.2.Quiet Operation Setting.Set the DIP ”8”to ON position of SW5,the system willrun with lower noise,but the maxcapacity will also reduce slightly.3.Do NOT change the settings of otherswitchs,wrong settings can make thesystem damage or other malfunctions.4.For some malfunctions, this system canmake back up running.* ECU:Electronic Control UniMCU:Micro Control UnitPMV:Pulse Modulated ValveState when out of factory (Normal Operating)OFF OFF OFF OFFON OFF OFF OFFOFF ON OFF OFFOFF OFF ON OFF1 2 3 4 DefinitionCompulsive Heating:Frequency 50HZ; PMV200 pulse;Class 5 of outdoor fan motor.Rated OperatingCompulsive Cooling:Frequency 60HZ; PMV200 pulse;Class 7 of outdoor fan motor.Definition of SW1 on Malfunction DisplayModule temperature too high (Overload Protecter)242526272829Module switch failure3031323435363940Indoor overloadIndoor frosted41424344454638Malfunction of gas pipe temp. sensor for indoor unit B3316 Lack of refrigerant or discharging30000 704034000 804026000 40 70243