Outdoor Unit: Abnormal Discharge Pipe Temperature - Daikin VRV K Manual

SI-95.BOOK Page 94 Friday, March 31, 2000 10:59 AM
Troubleshooting

2.18 Outdoor Unit: Abnormal Discharge Pipe Temperature

F F F F 3 3 3 3
Remote Controller
Display
I Abnormal discharge pipe temperature
Supposed Causes
I Defect of discharge pipe thermistor (R3-1T, R3-2T)
I Defect of outdoor unit PC board
I Discharge pipe thermistor wrong connection
I Liquid injection solenoid valve wrong connection
Troubleshooting
∗1 Refer to Thermistor Resistance / Temperature Characteristics on P138
94
Discharge pipe
YES
temperature is 135˚C
or higher.
NO
Is there a
wrong connection
of the discharge pipe
thermistor?
R3-1T (inverter side) X16A
R3-2T (standard
side) X17A
Is there a wrong
connection of the injection
solenoid valves Y3S
and Y4S?
Are
the characteristics
of the discharge pipe NO
thermistor normal?
R3-1T, R3-2T
(See ∗1)
YES
YES
NO
YES
Connect correctly and turn on again.
NO
Out of gas, compression defect, etc.
Defect of the refrigerant system
Replace the discharge pipe thermistor.
Replace outdoor unit PC board A1P.
Troubleshooting Inverter K Series
Si-95
(VF044)