Haier 3U19FS1ERA Service Manual - Page 96

>_]]VbTZR\ _^UZdZ_^Vb 6. Diagnostic code and trouble shooting 6.1.1.Diagnosticcodeforoutdoorunit -95- PRODUCT DIAGNOSIS PROCEDURE Diagnosis display on Digital LED Malfunction Code Diagnosis 1 Faulty of outdoor unit EEPROM Malfunction Code Diagnosis Precautions For Adding Refrigerant 34 Malfunction of gas pipe temp. sensor for indoor unit C 1.This system must use refrigerant R410A. 2 IPM overcurrent or short circuit 35 Malfunction of gas pipe temp. sensor for indoor unit D 2.Add refrigerant 20g per meter when the 4 Communication failure between Module and ECU Communication cables broken or not well connected. total piping length exceeds the standard 36 Malfunction of gas pipe temp. sensor for indoor unit E value,but make sure that the total liquid piping length should be less than the 5 Module operated overload 38 Malfunction of module temp.sensor max value. 6 Module low or high DC voltage (under 192V or above 375V) 39 Malfunction of condensing temp. sensor Outdoor Unit Std. Value Max Value 8 Discharging temperature overheating.Lack of refrigerant, ambient temperature too high or PMVs blocked. 3U19FS1ERA 30 50 40 Malfunction of liquid pipe temp. sensor for indoor unit E 4U25HS1ERA 40 70 9 Malfunction of the DC fan motor 41 Malfunction of piping temp. sensor 4U30HS1ERA 40 70 5U34HS1ERA 40 80 10 Malfunction of defrosting temp. sensor 42 System high pressure switch off 11 Malfunction of compressor suction temp. sensor 43 System low pressure switch off 12 Malfunction of ambient temp. sensor 44 System high pressure protection.Refrigerant overabundance,High condensing temp. or Notes: 1.When using this product,you need not to 13 Malfunction of compressor discharge temp. sensor malfunction of fan motor. set the address.But the L/N wires 15 Communication failure between indoor&outdoor unit 17 4-way valve switching failure between indoor & outdoor units must be 45 System low pressure protection.Refrigerant shortage, Low defrosting temp., or malfunction of fan motor. corresponded,or there will be communication failure. 2.Quiet Operation Setting.Set the DIP "8" 18 Module overcurrent / Module switch failure 20 Indoor overload 46 Malfunction of module temp.sensor Definition of SW1 on Malfunction Display to ON position of SW5,the system will run with lower noise,but the max capacity will also reduce slightly. 21 Indoor frosted 23 Module temperature too high (Overload Protecter) 24 Compressor overcurrent 25 Input overcurrent 26 MCU reset 1 2 34 Definition 3.Do NOT change the settings of other OFF OFF OFF OFF State when out of factory (Normal Operating) switchs,wrong settings can make the system damage or other malfunctions. ON OFF OFF OFF Compulsive Heating:Frequency 50HZ; PMV 200 pulse;Class 5 of outdoor fan motor. 4.For some malfunctions, this system can make back up running. OFF ON OFF OFF Compulsive Cooling:Frequency 60HZ; PMV * ECU:Electronic Control Unit 200 pulse;Class 7 of outdoor fan motor. MCU:Micro Control Unit OFF OFF ON OFF Rated Operating PMV:Pulse Modulated Valve 27 Module current detect circuit malfunction Note: 28 Malfunction of liquid pipe temp. sensor for indoor unit A 1. The number of outdoor unit diagnosis= the number of indoor unit diagnosis -20 2. If indoor unit use remoter controller, the diagnosis display on the timing light and 29 Malfunction of liquid pipe temp. sensor for indoor unit B operation light. 30 Malfunction of liquid pipe temp. sensor for indoor unit C (The flash times of timing light represent ten digits of diagnosis; the flash times of operation light represent single digits) 31 Malfunction of liquid pipe temp. sensor for indoor unit D 3. If indoor unit use wire controller, the diagnosis is hex, if you want to find out the meaning 32 Malfunction of gas pipe temp. sensor for indoor unit A of the diagnosis, you need to change the hex into decimal system. 33 Malfunction of gas pipe temp. sensor for indoor unit B 0150504996