Troubleshooting Guide
148
Outdoor Unit
Excessive rise in
outdoor high
pressure
Error
Code
Error Contents
Meaning
Main Causes
Error display
position
24
Compressor Off due to the
high pressure switch in
outdoor unit
Concerned
Remote con-
troller
Panel Display
Outdoor unit
1. Defective high pressure switch
2. Defective Indoor or Outdoor fan
3. Chocked compressor check valve
4. Pipe chocked due to the pipe dam-
age
5. Refrigerant overcharge
6. Defective LEV at the Indoor or
Outdoor Unit .
7. Covering or chocking (Outdoor cov-
ering during the cooling mode /
Indoor Unit filter chocking during
the heating mode)
8. SVC valve chocking
9. Defective Outdoor PCB
■
Defect inspection method
1) In case the Indoor / Outdoor Unit fan is not working normally, please check and replace them if required.
(Refer to CH105~CH108)
2) Check whether Indoor / Outdoor Unit heat exchange is being accomplished successfully.
Otherwise, check and modify the installation condition as per the required heat exchange.
In case of heat exchanger covering please remove the outdoor condenser covering and also check the Indoor
Unit filter.
3) Is the actual pressure reached high enough for the high pressure switch to be operational.
Connect the manifold gauge at the high pressure service valve and compare the value of the high pressure
sensor.
4) Check whether the SVC valve is open and other conditions(fold, dent etc) .
5) In case the pressure is not high enough for the high pressure switch to come into action, then please check the
high pressure switch.
In case, after temporary shorting of the pressure switch of the inverter and constant speed compressor on one
by one if there is no error code display, then please replace the concerned high pressure switch.
In case the error code is displayed after shorting the high pressure switch, then please replace the concerned
PCB.
6) Required refrigerant re-calculation and check the refrigerant recharging condition.
7) Check whether the temperature of the both ends of the check valve are similar ?
In case a temperature difference is sensed, then please replace the check valve.
Содержание ARNU Series
Страница 13: ...Service Manual 13 External Appearance 2 2 Outdoor Units ARUN1008F20 10HP ...
Страница 16: ...16 ...
Страница 17: ...Service Manual 17 Indoor Units ...
Страница 18: ...18 Indoor Unit ...
Страница 30: ...30 Indoor Unit ...
Страница 44: ...44 Indoor Unit ...
Страница 79: ...Service Manual 79 Outdoor unit ...
Страница 88: ...88 Outdoor Unit 5 Wiring Diagrams Wiring Diagrams ...
Страница 112: ...112 Outdoor Unit ...
Страница 113: ...Service Manual 113 Trouble shooting guide ...
Страница 137: ...Service Manual 137 Troubleshooting Guide Resistance measure between phases of compressor ...
Страница 140: ...Troubleshooting Guide 140 Outdoor Unit Check 3 phase rectification diode Measure input power between phases R S R T S T ...
Страница 141: ...Service Manual 141 Troubleshooting Guide Measure input power of one phase R S T Connector of compressor ...
Страница 142: ...Troubleshooting Guide 142 Outdoor Unit Connector of reactor Connectors of 3phase diode ...
Страница 143: ...Service Manual 143 Troubleshooting Guide Connectors of capacitor Check IPM PCB ...
Страница 144: ...Troubleshooting Guide 144 Outdoor Unit Measure current of IPM U V W Measure voltage of IPM P N ...
Страница 149: ...Service Manual 149 Troubleshooting Guide SVC valve Measure resistance on the pressure switch connector ...
Страница 150: ...Troubleshooting Guide 150 Outdoor Unit Pressure switch CHECK VALVE ...
Страница 152: ...Troubleshooting Guide 152 Outdoor Unit Measure power input of outdoor unit ...
Страница 153: ...Service Manual 153 Troubleshooting Guide Measure power input of outdoor unit ...
Страница 156: ...Troubleshooting Guide 156 Outdoor Unit Liquid injection by pass valve ...
Страница 157: ...Service Manual 157 Troubleshooting Guide Measure resistance of LEV coil ...
Страница 158: ...Troubleshooting Guide 158 Outdoor Unit Heater ...
Страница 164: ...Troubleshooting Guide 164 Outdoor Unit Pressure sensor connector High pressure sensor Low pressure sensor ...
Страница 168: ...Troubleshooting Guide 168 Outdoor Unit Measure input power of outdoor unit ...
Страница 172: ...Troubleshooting Guide 172 Outdoor Unit Check main fuse of out door unit ...
Страница 176: ...Troubleshooting Guide 176 Outdoor Unit Fan IPM ...
Страница 178: ...Troubleshooting Guide 178 Outdoor Unit Measure input power of fan main PCB ...
Страница 182: ...Troubleshooting Guide 182 Outdoor Unit 4way valve in the outdoor unit 4way valve connector on the Main PCB ...
Страница 183: ...Service Manual 183 Exploded View Replacement Parts List ...