Troubleshooting by Indication on the Remote Controller
ESIE09-08A
190
Troubleshooting
3.39
“L4”
Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise
Remote Control
Display
L4
Applicable Models
ER*Q 011~016*
Method of
Malfunction
Detection
Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Decision Conditions
When the temperature of the inverter radiation fin increases above 83°C.
Supposed Causes
Actuation of fin thermal (Actuates above 83°C)
Defect of inverter PC board (A2P)
Defect of fin thermistor
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 opening blocked
Dirty radiator fin
High outdoor temperature
Check heat conductive paste
NO
YES
The radiator
fin temperature is
supposed to have risen
to 84 C or more.
Properly connect.
YES
NO
Is the
connector X111A of
the fin thermistor properly
connected to the outdoor
PC board?
Continue operation.
Replace the inverter PC board assy
(A2P)
YES
Does the
malfunction code "L4"
recur when the unit starts
operation?
NO
Turn ON the power supply, and then
press the remote control check
button once.
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...