Technical data

4. Service procedures
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IV-1
4. SERVICE PROCEDURES
4-1 Troubleshooting ...................................................................................... IV - 2
(1) Check before and after Troubleshooting.......................................... IV - 3
(2) General Troubleshooting Flow Chart: Diagnosis and Remedy ........ IV - 5
(3) Meanings of alarm messages .......................................................... IV - 7
(4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y.......................... IV - 9
(5) Symptoms and parts to inspect........................................................ IV - 10
(6) Procedures When a Specific Component Does Not Work............... IV - 20
(7) Service Functions of Remote Controller .......................................... IV - 22
4-2 Checking the Electrical Components ...................................................... IV - 36
(1) Measurement of Insulation Resistance ............................................ IV - 36
(2) Measurement of Insulation Resistance for Electrical parts .............. IV - 37
(3) Checking the Protective Devices ..................................................... IV - 38
(4) Checking the Electrical Parts ........................................................... IV - 39
(5) Sensor and Solenoid Layout Diagram ............................................. IV - 42
(6) Thermistor Characteristic Curve ...................................................... IV - 47
(7) P.C.B. Setting .................................................................................. IV - 48
(8) R.C Address Setting Method ........................................................... IV - 49
(9) Automatic Address Setting Method.................................................. IV - 50
(10) Displaying Indoor / Outdoor Unit Combination Numbers ................. IV - 50
(11) Items to Check Prior to Test Run ..................................................... IV - 51
(12) Test Run Procedure ......................................................................... IV - 52