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Daikin VRV III-S RXYMQ36 48PVJU Service Manual Page 140

60 hz.
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SiUS34-907
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Check for the points shown below.
Is the stop valve open?
Is the high pressure switch connector properly
connected to the main PCB?
Does the high pressure switch have continuity?
Are the
three points above
OK?
YES
Mount a pressure gauge on the high pressure
service port.
Reset the operation using the remote
controller, and then restart the operation.
Does the stop
due to malfunction (E3)
recur?
NO
Are the
characteristics of the high
pressure sensor normal?
(*1.)
YES
Service Checker
Connect the service checker to compare the "high pressure" value and the
actual measurement value by pressure sensor (Refer to *1) by using the
service checker.
Check if the
"high pressure" value and
the actual measurement value by
pressure sensor are
the same.
YES
· The high pressure sensor is normal, and the pressure detected with the PCB
is also normal.
· The high pressure has really become high.
Referring to information on P.215, remove the causes for the
CHECK 5
increased high pressure.
Troubleshooting
NO
Is the high pressure
YES
switch operating value normal
(i.e., 580psi)?
YES
NO
NO
Troubleshooting by Indication on the Remote Controller
Rectify defective points, if any.
NO
Replace the high pressure
switch.
Replace the high pressure
sensor.
Replace the main PCB (A1P).
131

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  • cp shukla Feb 16, 2016 06:50:
    RXYQ18PAY6 service manual & vrv Fulform