ESIE09-08A
Troubleshooting by Indication on the Remote Controller
Troubleshooting
191
3.40
“L4”
Indoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise (R8T)
Remote Control
Display
L4
Subcode 8
Applicable Models
All indoor units
Method of
Malfunction
Detection
Fin temperature is detected by the thermistor of the radiation fin.
If fin temperature is too high, the compressor will slow down (capacity shortage).
Malfunction
Decision Conditions
Faulty thermistor.
Broken wire.
Supposed Causes
Defect of inverter PC board [A4P (1
ø
) or A5P (3
ø
)]
Defect of fin thermistor (R8T)
Troubleshooting
Caution
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Faulty heat radiation of power unit
• Air suction or discharge opening
blocked
• Dirty radiator fin
• High water / discharge temperature
• Check heat conductive paste
Continue operation.
NO
YES
Replace the inverter PC board
assy
YES
The radiator
fin temperature is
supposed to have risen
to high value.
Properly connect.
YES
NO
Is the
connector X111A
of the fin thermistor properly
connected to the indoor
PC board?
Does the
malfunction code "L4-08"
recur when the unit starts
operation?
NO
Turn ON the power supply, and then
press the remote control check
button once.
[A4P (1
ø
) or A5P (3
ø
)] as well.
Содержание ALTHERMA HT EKBUHAA6 V3
Страница 2: ......
Страница 7: ...ESIE09 08A Table of Contents v 1 3 Service Tools 283 Index i Drawings Flow Charts iii ...
Страница 13: ...ESIE09 08A General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units Tanks 2 ...
Страница 16: ...Model Names of Indoor Outdoor Units Tanks ESIE09 08A 4 General Information ...
Страница 17: ...ESIE09 08A Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Unit 8 ...
Страница 28: ...Refrigerant Circuit ESIE09 08A 16 Refrigerant Circuit EKHBRD 011 014 016 AB AC V1 Y1 ...
Страница 38: ...Functional Parts Layout ESIE09 08A 26 Refrigerant Circuit 2 6 EKHTSU 200 260 A AB AC Front view Tank sensor ...
Страница 40: ...Functional Parts Layout ESIE09 08A 28 Refrigerant Circuit ...
Страница 63: ...ESIE09 08A PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 Refrigerant Circuit 51 ...
Страница 64: ...PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 ESIE09 08A 52 Refrigerant Circuit ...
Страница 125: ...ESIE09 08A Field Setting Test Operation 113 ...
Страница 232: ...Troubleshooting by Indication on the Remote Controller ESIE09 08A 222 Troubleshooting ...
Страница 237: ...ESIE09 08A Piping Diagrams Appendix 227 EKHBRD 011 014 016 AB AC V1 Y1 ...
Страница 250: ...Wiring Diagrams ESIE09 08A 240 Appendix EKHBRD 011 014 016 AB AC V1 ...
Страница 251: ...ESIE09 08A Wiring Diagrams Appendix 241 ...
Страница 256: ...Wiring Diagrams ESIE09 08A 246 Appendix EKHBRD 011 014 016 AB AC Y1 ...
Страница 257: ...ESIE09 08A Wiring Diagrams Appendix 247 ...
Страница 260: ...Wiring Diagrams ESIE09 08A 250 Appendix ...
Страница 266: ...Method of Replacing the Inverter s Power Transistors Modules ESIE09 08A 256 Appendix Inverter PC board C C W U V ...
Страница 288: ...3 Way Valve ESIE09 08A 278 Appendix ...