Daikin VRV Inverter K Series Manual page 320

SI-05C.BOOK Page 306 Monday, November 6, 2000 4:13 PM
Troubleshooting
3.7 Outdoor Unit: Abnormal Discharge Pipe Temperture
F F F F 3 3 3 3
Remote Controller
Display
Supposed Causes
Trobleshooting Troubleshooting the outdoor unit for which HWL is lit in accordance with the following flow chart.
306
Abnormal discharge pipe temperature
Defect of discharge pipe thermistor (5K: R3T 8K, 10K: R3-1T, R3-2T)
Defect of outdoor unit PC board
Discharge pipe thermistor wrong connection
Liquid injection solenoid valve wrong connection
Discharge
YES
pipe temperature is 135˚C
or higher.
8, 10K:
Is there a wrong connection of the
NO
discharge pipe thermistor?
•INV outdoor unit
R3-1T (inverter side) X17A
R3-2T (standard side) X18A
•Constant speed outdoor unit
R3-1T (standard 1 side) X17A
R3-2T (standard 2 side) X18A
connection of the injection
Are the
characteristics of the
NO
discharge pipe thermistor
normal? (3.5kΩ~
400kΩ)
YES
YES
NO
8, 10K:
Is there a wrong
YES
Connect correctly and turn on again.
solenoid valves Y2S
and Y3S?
NO
Out of gas, compression defect, etc.
Defect of the refrigerant system
Replace the discharge pipe
thermistor.
Replace outdoor unit PC board.
INV outdoor unit : A1P
Constant speed outdoor unit : A1P
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Troubleshooting PLUS Series
SiE-05C
(VF141)