User manual AEG-ELECTROLUX EXI12HA7WI

[. . . ] Service manual SERVICE MANUAL MSG-07/09/12HRIN2 1 Service manual 1 1. 1 Precaution Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1. 2 Warning There is risk of fire or electric shock. Do not plug or unplug the power supply plug during operation. [. . . ] Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve. Connect the charge hose with the push pin to the gas service port. Open the low-pressure valve on the charge set slightly to purge air from the charge hose. Set the 2-way valve to the close position. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0. 1MPa. Immediately set the 3-way valve to the closed position. Do this quickly so that the gauge ends up indicating 0. 3 to 0. 5Mpa. Disconnect the charge set, and amount the 2-way and 3-way valve's stem nuts and service port caps. Use a torque wrench to tighten the service port cap to a torque of 18n. m Be sure to check for gas leakage. 13 Service manual 8. 6 Re-air purging (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the closed position. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45' for 3 seconds then closing it for 1 minute; repeat 3 times. After purging the air, use a torque wrench to tighten the flare nut to on the 2-way valve. Check the flare connections for gas leakage. Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 0. 3 to 0. 5 Mpa. Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position. Be sure to use a hexagonal wrench to operate the valve stems. [. . . ] The LED flashes at a frequency of 5Hz if there is any malfunction. 23 Service manual 10. 3 Problem Solution Cause Power failure Transformer failure Indoor main control board failure Remedy Check the power cord. Check the input and output on transformer. Correct if there is any wrong connection. Check the sequence of compressor wiring. [. . . ]