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Daikin VRV III-S RXYMQ36 48PVJU Service Manual Page 183

60 hz.
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Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
In cooling mode
Set up a pressure gauge at the service port on the low pressure side.
Check if the
low pressure is 14.5 psi
or below. ( 1)
YES
*1: Check the low pressure value by using pressure gauge in operation.
*2: Compare the actual measurement value by pressure sensor with the value by the pressure gauge.
(To gain actual measurement value by pressure sensor, measure the voltage at the connector [between (2)-
(3)] and then convert the value into pressure referring to P.242.)
In heating mode
Reset the operation using the remote controller then restart.
Check if the
temperature difference
between the suction pipe and
the heat exchanger
is 68 ˚F and over.
YES
*1
CHECK 2
*2
CHECK 7
*3: Compare the thermistor resistance value with the value on the surface thermometer.
174
NO
property of low pressure
property of suction pipe
NO
thermistor (R5T) and heat
: Refer to the information on P.211.
: Refer to the information on P.216.
Check if the
sensor is normal.
( 2)
YES
Check if the
exchanger thermistor
(R4T) are normal.
(*3)
YES
NO
Replace the low pressure
sensor.
Replace the main PCB (A1P).
Remove the factor of decreasing
low pressure by referring to
(*1).
CHECK 2
NO
Replace the thermistor (R4T or
R5T).
Replace the main PCB.
Remove the factor of
superheating by referring to
(∗2).
CHECK 7
SiUS34-907
Troubleshooting

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R-410a

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