Error No. 150 - LG Multi V5 Service Manual [Page 192] - ManualsLib

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Error No. 150 - Lg Multi V5 Service Manual Hide thumbs Also See for Multi V5:

Data manual (162 pages)

Manual book (133 pages)

Engineering manual (105 pages)

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Table of Contents

ERROR CODES

Error No. 150

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service WARNING troubleshooting of the Multi V product. Error No. Description 150 Outdoor unit compressor Master: 1501 discharge superheat not Slave 1: 1502 satisfied. Slave 2: 1503 Is there an indoor unit that is leaking a large amount of refrigerant?* Yes Is the EEV coil assembly correct? Yes Are the EEV connections correct? Yes Replace EEV assembly. *Excessive refrigerant leak: Both the piping inlet and outlet temperatures are <50°F when the indoor unit is off (EEV 40 pulses). Also, a loud refrigerant flow noise was heard. 192 Code indicates that based on current superheat measurements, there is a high possibility of liquid refrigerant flooding back and damaging the compressor. Code can only occur when the outdoor is operating in cooling mode (all indoor units must be in cooling mode; error cannot occur during simultaneous operation). The first time superheat falls <4.8ºF (<3ºC) for 5 minutes, the sys- tem will shut down and CH150 is displayed on all indoor unit zone sensors and central control devices. After the initial occurrence, the outdoor unit cycles off and will auto-restart. Following the initial restart, and after 10 minutes of operation to al- low the system time to stabilize, if the superheat again falls <4.8°F (<3ºC) for 5 minutes, the system will shut down and auto restart for a second time. If error occurs 3 times within any 1 hour period of compressor oper- ation, the error code will be assigned a Level 3, and the system will shut down and remain off. A manual restart will be necessary. No The compressor EEV or circuit Replace the compressor EEV or EEV assembly. No Re-assemble or replace the EEV coil. No Connect EEV connections. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp. Details No leaking? Yes Causes After at least 10 minutes of compressor operation, the master outdoor unit microprocessor will calculate the system's compressor superheat. If at any time during compressor operation where all indoor units in thermal on are in cooling mode and the compressor superheat falls <4.8°F (<3ºC) for bility that liquid could flood back to the inlet of the compressor scroll, resulting in compressor damage. 1. Indoor unit EEV has disconnect- ed or short circuited. 2. Defective compressor EEV (large refrigerant leak has occurred). 3. Defective liquid piping and / or vapor piping connections. Check liquid and vapor piping connections. - Table of Contents Previous Page Next Page

Table of Contents

Troubleshooting

Quick Control Setting 53
Test Run Checklist 111

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