ESIE13-02
Error Codes: Outdoor Units
105
Part 4 – Troubleshooting
4
3
4
5
4
Troubleshooting
(*) See also "Check No.6 - Evaluation of Abnormal High Pressure" on page 156.
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Replace HPS with no
continuity.
Turn off the power supply.
Wait for 10 minutes after
compressor stops operating,
then check the following.
Is there
continuity in control and
protection HPS?
Correct the high pressure.
* Replace the outdoor unit
PC board (A1P) ERHQ***V3* / ERLQ***V3*
* Replace the inverter PC board
(A2P) ERHQ***W1* / ERLQ***W1*
Replace the high pressure
switch (HPS).
NO
YES
Connect correctly.
Are control
and protection HPS
connected to outdoor unit
PC board?
(Note)
NO
YES
Open the stop valve.
NO
YES
Set the remote controller and
turn on again.
Is the
malfunction code of “H3”
displayed?
YES
NO
Is high pressure
abnormally high?
(*)
YES
NO
Check the installation
conditions.
Is the
stop valve
open?
0.5
0.5
0
0.5
1.0
2.0
3.0
3.5
1.5
2.5
0.5
1.5
2.5
3.5
0
1
2
3
Output voltage V
(V
DC
)
P
P = 1.38V - 0.69
P : Detected pressure (MPa)
V : Output voltage
Detected pressure PH (MPa)
