User manual LG LSN364H

[. . . ] 31 6-4. Water Heat Exchange Control Board . 32 6-5. Outdoor Control Board (Single phase Type) . 33 6-6. Outdoor Unit Control (3 phase type). 38 7 Refrigeration Cycle / Water System Diagram . [. . . ] Check that the service valve is fully open. 8 109 H02 1 When the input current is more than zero 20 sec or later after the compressor activation and the activation has not been completed. Defect in the current detection circuit O × × 1. Defect of compressor (lock) ­ Replace the compressor. Defect of compressor wiring (open phase). Replace the outdoor inverter control board. 8 110 H03 O 8 110 87 Diagnostic functional operation Check code Operational cause Backup Automat present ic reset Determination and action Number of abnormalities Detailed for item confirmation Operation of case thermostat When the case thermostat exceeds 125°C. Check the refrigeration cycle (gas leak). Check the case thermostat and connector. Check that the service valve is fully open. Cut J800-J803. 4 110 L10 Unset service PC board jumper Jumpers J800-J803 have not been cut. The communication between the outdoor PC board MUCs error No communication signal between IPDU and CDB. The outlet temperature error When the discharge temperature sensor (TD) exceeds 111°C. O × × 1 111 L29 O 1. P26 abnormality occurs when operating with the compressor wiring disconnected . . . No abnormality occurs when operating with the compressor wiring disconnected . . . Even if the connection lead wire of the compressor is disconnected, it stops due to an abnormality in the position detection . . . Check the wire wound resistor of the compressor. Replace the compressor. 10 117 P22 O × 1-4 118 P26 Short circuit of the compressor driver element error When an abnormal short circuit of IGBT is detected. O × 8 118 Compressor rotor position error The rotor position in the compressor cannot be detected. P29 O × 8 118 89 Defect mode detected by the remote control Diagnostic functional operation Check code Operational cause Status of airconditioning Determination and action Condition No communication between hydro Stop Not unit an remote controller displaying at · The remote control wiring is not all connected correctly. (cannot · The hydro unit has not been turned operate by on. the remote control) ­ Defect in the remote control power supply 1. Check the hydro unit power supply wiring. Check the water heat exchange control board. Defect in the reception of the remote control 1. [. . . ] Inlet/ Outlet water temperature measurement 7. Water heat exchanger control board, Terminal block Frequency Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Annually Periodic inspection details Insulation measurement with a mega tester Electronic voltage measurement: 220-230V ±10% Hot water supply/ Heating/ Cooling operation check with remote controller Visual inspection and check with a leak tester: No leakage must be found Checking for water dirtiness in a closed cycle, Cleaning Temperature measurement: Temperature measurement during an operation No leakage or abnormal noise must be found (Replacement every 10 years: Charged) Water leakage, Air vent Visual check for charge pressure abnormality, water leakage, or corrosion Check for appearance damage, deformation, or loose terminal Operation check while running Water leakage, water pressure check Water leakage, Appearance check, Drainage check Check for loose connector and connecting terminal Outdoor unit (HWS-803H-E, 1103H-E, 1403H-E) (HWS-803H8(R)-E, 1403H8(R)-E, 1603H8(R)-E) 1. Insulation measurement (Power source circuit/ Compressor) 2. Power source measurement (No-load voltage/ Rated operation) 3. [. . . ]