![background image](http://html1.mh-extra.com/html/daikin/altherma-ht-ersq-011-aa/altherma-ht-ersq-011-aa_service-manual_4142901265.webp)
ESIE09-08A
Method of Replacing the Inverter’s Power Transistors Modules
Appendix
255
5. Method of Replacing the Inverter’s Power Transistors
Modules
Warning
: CAPACITOR SHOCK HAZARD. The capacitors (top surfaces) can hold up to 220V. Use
correct precautions when servicing.
Checking failures in power semiconductors mounted on inverter PC board
Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester.
<Items to be prepared>
Multiple tester :
Prepare the digital type of multiple tester with diode check function.
<Preparation>
Turn OFF the power supply. Then, after a lapse of 10 minutes or more, make measurement of
resistance.
To make measurement, disconnect all connectors and terminals.
Inverter PC board
W
V
U
C+
C-
Summary of Contents for ALTHERMA HT ERSQ 011 AA
Page 2: ......
Page 7: ...ESIE09 08A Table of Contents v 1 3 Service Tools 283 Index i Drawings Flow Charts iii...
Page 16: ...Model Names of Indoor Outdoor Units Tanks ESIE09 08A 4 General Information...
Page 28: ...Refrigerant Circuit ESIE09 08A 16 Refrigerant Circuit EKHBRD 011 014 016 AB AC V1 Y1...
Page 40: ...Functional Parts Layout ESIE09 08A 28 Refrigerant Circuit...
Page 63: ...ESIE09 08A PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 Refrigerant Circuit 51...
Page 64: ...PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 ESIE09 08A 52 Refrigerant Circuit...
Page 125: ...ESIE09 08A Field Setting Test Operation 113...
Page 232: ...Troubleshooting by Indication on the Remote Controller ESIE09 08A 222 Troubleshooting...
Page 237: ...ESIE09 08A Piping Diagrams Appendix 227 EKHBRD 011 014 016 AB AC V1 Y1...
Page 250: ...Wiring Diagrams ESIE09 08A 240 Appendix EKHBRD 011 014 016 AB AC V1...
Page 251: ...ESIE09 08A Wiring Diagrams Appendix 241...
Page 256: ...Wiring Diagrams ESIE09 08A 246 Appendix EKHBRD 011 014 016 AB AC Y1...
Page 257: ...ESIE09 08A Wiring Diagrams Appendix 247...
Page 260: ...Wiring Diagrams ESIE09 08A 250 Appendix...