Service Manual
159
Troubleshooting Guide
Excessive rise in
high pressure
Error
Code
Error Contents
Meaning
Main Causes
Error display
position
34
Com. Off due to the high
pressure sensor
Concerned
Remote con-
troller
Panel Display
Outdoor unit
1. Defective high pressure sensor
2. Defective Indoor / Outdoor Unit fan
3. Change in shape of pipe due to the
damage
4. Excessive
refrigerant charging
5. Defective Indoor / Outdoor Unit
LEV
6. Covering or chocking (Outdoor cov-
ering during the cooling mode /
Indoor filter chocking during the
heating mode )
7. SVC valve chocked .
8. Defective outdoor PCB
9. Defective Indoor Unit pipe temp.
sensor
■
Defect inspection method
1) Check the Indoor and Outdoor Unit fan and replace if required. (Refer to CH105~CH108)
2) Check if the proper heat exchange is obtained in Indoor and Outdoor Unit
Otherwise, modify the installation condition to get the proper heat exchange. Remove the outdoor cover (by dust
etc) if any and also check the Indoor Unit filter also.
3) Check the SVC valve Open and pipe condition (bent, dent etc ) .
4) Check whether the actual discharge pressure is high .
Connect the manifold gauge to the svc valve and compare the high pressure reading .
5) Check the Indoor / Outdoor Unit LEV connector connecting condition.
6) Check the LEV / Hot gas valve's coil resistance .
LEV : Resistance between each terminal of the LEV 45~90
Ω
hot gas :
liquid injection :
In case the coil resistance is normal then please check the LEV/ Hot Gas Valve. (Refer to Check!!)
7) Recalculate the refrigerant charging and Check the charging condition .
8) Check the Indoor Unit pipe temp sensor connecting condition and temp sensor resistance.
(Resistance measurement method : Refer to CH02/CH06)
9) In case the above given contents are normal, then please replace the Outdoor Unit PCB.
10) In case a similar error code exists even after the replacement of the PCB, then replace the high pressure sen-
sor.
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 ...