Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 132

SiBE26-701
Troubleshooting
*1. The connector for the high pressure switch are as in the table below.
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is the stop
valve open?
YES
Are
control and
protection HPS
connected to
outdoor unit PC
board?
(Note)
YES
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?
YES
Set the remote controller and
turn on again.
Model Electric signal
RZQ200·250C S1PH
NO
NO
NO
Check No. 5
YES
Is high pressure
abnormally high?
NO
Is the
YES
malfunction code of "H3"
displayed?
NO
Check No. 3
YES
(P.174) The pressure is
abnormaly
high.
Connector
X2A
Diagnosis by Remote Controller
Open the stop valve.
Connect correctly.
Replace HPS with no continuity.
Correct the high pressure.
Replace the high
pressure switch (HPS).
Correct the failure.
Check "Over charge of
refrigerant"
( Check 9 P.182)
Replace the outdoor
unit PC board (A1P).
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