Daikin VRV III-S RXYMQ36 48PVJU, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiUS34-907
174 Troubleshooting
Troubleshooting
*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.)
*1 : Refer to the information on P.211.
*2 : Refer to the information on P.216.
*3: Compare the thermistor resistance value with the value on the surface thermometer.
In cooling mode
Replace the lo w press u re
sensor.
Check if the
property of lo w press u re
sensor is normal.
( 2)
Check if the
lo w press u re is 14.5 psi
or b elo w . ( 1)
Replace the main PCB (A1P).
N O N O
YES
Caution
Be s u re to t u rn off the po w er s w itch b efore connecting or disconnecting the connector, or parts may b e damaged.
Set u p a press u re ga u ge at the ser v ice port on the lo w press u re side.
Remo v e the factor of decreasing
lo w press u re b y referring to
(
*
1).
YES
CHECK 2
In heating mode
Replace the thermistor (R4T or
R5T).
Check if the
property of suction pipe
thermistor (R5T) and heat
exchanger thermistor
(R4T) are normal.
(*3)
Check if the
temperature difference
between the suction pipe and
the heat exchanger
is 68 ˚F and over.
Replace the main PCB.
NO NO
YES
Reset the operation using the remote controller then restart.
Remove the factor of
superheating by referring to
(
∗
2).
YES
CHECK 7
CHECK 2
CHECK 7