Daikin GYEQ20AN Service Manual page 4

Part 6 Replacement of Parts .................................................... 202
1. Precautions to Take before Replacement...........................................203
2. Replacement of Primary Parts ............................................................204
Part 7 Maintenance / Service Data ........................................... 211
1. Maintenance........................................................................................212
2. Servicing Data.....................................................................................225
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1.13 Inspecting Refrigerating Machine Oil and Refrigerant..........................183
1.14 Inspecting the Cooling Water Filter ......................................................184
1.15 Checking the Cooling Water System for Water Leaks .........................184
1.16 Inspecting the Cooling Water Level......................................................185
1.17 Inspecting the Water Motor-operated Valve.........................................185
1.18 Inspecting the Thermostat....................................................................186
1.19 Inspecting the Cooling Water Concentration........................................187
1.20 Inspecting the Oil Pressure Switch.......................................................187
1.21 Inspecting the Cooling Water Temperature Sensor .............................187
1.22 Inspecting the Exhaust Temperature Sensor .......................................188
1.23 Inspecting the Compressor ..................................................................189
1.24 Inspecting the Compressor Clutch .......................................................190
1.25 Inspecting the Solenoid Valves ............................................................191
1.26 Inspecting the Outdoor Fan Motor........................................................192
1.27 Inspecting the Refrigerant Amount.......................................................193
1.28 Inspecting the Check Valve..................................................................194
1.29 Inspecting the Electronic Expansion Valve ..........................................195
1.30 Checking Stop Valve Operation ...........................................................196
1.31 Inspecting the Four-way Valve .............................................................197
1.32 Inspecting the SC Coil..........................................................................197
1.33 Inspecting the Refrigerant System Sensors .........................................198
1.34 Inspecting the Outdoor Unit's Circuit Boards and
Power Supply System ..........................................................................200
1.35 Inspecting the Communication Cables.................................................200
1.36 Inspecting the Heaters .........................................................................201
1.1 Safety Precautions ...............................................................................203
1.2 Safety Precautions for Replacement....................................................203
2.1 Replacing the Engine ...........................................................................204
2.2 Replacing the Compressor...................................................................206
2.3 Replacing the Compressor Heater .......................................................209
2.4 Charging the Refrigerating Machine Oil ...............................................209
2.5 Charging the Refrigerant ......................................................................210
2.6 Removing the Control Box ...................................................................210
1.1 Periodic Inspection Items, Quantities,
and Standard Values for the Outdoor Unit ...........................................212
1.2 Periodic Inspection Procedure for the Outdoor Unit.............................213
2.1 Resistance/Temperature Characteristics of Various Sensors..............225
2.2 Pressure/Voltage Characteristics of Pressure Sensors .......................226
2.3 Pressure/Saturation Temperature Conversion Chart for
Outdoor Unit Pressure Sensors ...........................................................227
2.4 Tightening Torque Table ......................................................................228
2.5 Standard Operation Data (Reference Values) .....................................230
SiAUY361411EA
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