Daikin GYEQ20AN Service Manual page 3

SiAUY361411EA
6. Sensor Mounting Positions ...................................................................25
7. Electrical Wiring Diagrams ....................................................................27
8. Installation Work Manual.......................................................................28
9. Wiring Manual .......................................................................................57
10.Test Run Manual...................................................................................67
Part 3 Control and Functionality ................................................ 89
1. Control Overview...................................................................................90
2. Outdoor Unit Control .............................................................................98
3. Actuator Control ..................................................................................103
Part 4 Troubleshooting ............................................................. 109
1. Troubleshooting the Outdoor Unit .......................................................110
2. Flow Charts for Troubleshooting .........................................................128
Part 5 Parts Inspection ............................................................. 169
1. Inspecting the Outdoor Unit ................................................................170
Table of Contents
6.1 Sensors Installed on the Engine.............................................................25
6.2 Sensors Installed in the System .............................................................26
1.1 System Control Overview.......................................................................90
1.2 Startup Sequences.................................................................................93
1.3 Actuators ................................................................................................95
1.4 Setting Up and Rewiring the Outdoor Unit .............................................96
3.1 Electric Motor Operated Valve Control.................................................103
3.2 Pump Control .......................................................................................107
3.3 Fan Control...........................................................................................107
3.4 Heater Control ......................................................................................107
3.5 Starter Control ......................................................................................107
3.6 Compressor Clutch Control ..................................................................107
3.7 Ignition Timing Control .........................................................................108
1.1 Error Codes ..........................................................................................110
1.2 How to Use the Checker on PCB .........................................................113
1.3 RUN Mode............................................................................................115
1.4 STOP Mode..........................................................................................121
1.5 Main Operations in Servicing ...............................................................125
2.1 Problems without Error Codes .............................................................128
2.2 Problems with Error Codes ..................................................................131
1.1 Safety Precautions for Inspecting or Servicing the Outdoor Unit .........170
1.2 Inspecting the Starter System ..............................................................171
1.3 Inspecting the Fuel Control System .....................................................173
1.4 Inspecting the Mixer System ................................................................174
1.5 Inspecting the Ignition System .............................................................176
1.6 Inspecting the Regulator ......................................................................179
1.7 Inspecting the Valve Clearance............................................................179
1.8 Inspecting the Compression Pressure .................................................180
1.9 Inspecting the Belt................................................................................180
1.10 Inspecting the Air Cleaner ....................................................................181
1.11 Inspecting the Breather Hose...............................................................181
1.12 Inspecting the Engine Oil Level............................................................182
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