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Troubleshooting by Indication on the Remote Controller
ESIE09-08A
158
Troubleshooting
Troubleshooting
: Refer to information on page 219.
NO
YES
YES
YES
NO
NO
YES
NO
YES
NO
+5V
(4)
(3)
(2)
(1)
Check for the points shown below.
Is the stop valve open?
Is the HPS connector properly connected to the main PC
board?
Does the high pressure switch have continuity?
Are the three
points above OK?
Rectify defective points, if any.
Mount a pressure gauge on the high-pressure service port.
Connect the Service Tool.
Reset the operation using the remote control,
put power off for ~ 10 seconds and then restart the operation.
Does the stop
due to malfunction (E3-01)
recur?
Is
the HPS
operating value normal (i.e.,
4.0MPa)?
Are the
characteristics of the
high pressure sensor
normal? (See
*1.)
Replace the HPS.
Replace the high pressure sensor.
Is the
pressure detected with
the PC board normal?
(See *2.)
Replace the main PC board.
·
The high pressure sensor is normal, and the pressure detected with the PC board is also normal.
·
The high pressure has really become high.
CHECK 1
*1: Make a comparison between the voltage of the pressure sensor (*4) and that read by the
pressure gauge.
(As to the voltage of the pressure sensor, make measurement of voltage at the connector,
and then convert it to pressure.)
*2: Make a comparison between the high pressure value checked with the Service Tool.
and the voltage of the pressure sensor (see *1).
*3: Make measurement of voltage of the pressure sensor.
Connector for high
pressure sensor (Red)
Make measurement of DC voltage between these wires. (*4)
Red
Black
White
Caution
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Refer to “remove the causes by which the high pressure has become high”.
Micro controller
A/D input
High
pressure
sensor
Check No.1
Summary of Contents for ALTHERMA HT EKBUHAA6 V3
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 ...