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Troubleshooting by Indication on the Remote Controller
ESIE09-08A
184
Troubleshooting
3.33
“JA”
Outdoor Unit: Malfunction of High Pressure Sensor
Remote Control
Display
JA
Applicable Models
ER*Q 011~016*
Method of
Malfunction
Detection
Malfunction is detected from the pressure detected by the high pressure sensor.
Malfunction
Decision Conditions
When the high pressure sensor is short circuit or open circuit.
Supposed Causes
Defect of high pressure sensor
Connection of low pressure sensor with wrong connection
Defect of outdoor unit PC board
Troubleshooting
1: Voltage measurement point
2: Refer to “Pressure Sensor”, pressure / voltage characteristics table on P254.
(V2806)
Caution
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
The
relationship
between the *1
VH and high pressure is
normal (see *2) when voltage
is measured between
X17A pins (1) and (3) of
indoor unit PC board
(A1P) (see *1).
Replace the high pressure sensor.
Connect the high pressure sensor
and turn on again.
NO
NO
Replace indoor unit PC board
(A1P).
YES
YES
The high
pressure sensor is
connected to X17A of
indoor unit PC
board (A1P).
Indoor unit PC board A4P
+5V
X17A
Red
Black
White
GND
*2 Measure DC voltage here.
H
igh pr
essur
e sensor
4
3
2
1
(V2807)
Microcomputer
A/D input
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...