Service Manual
2-21
OPERATION
8.4 Alarm
Code
Code
Category
Content of Abnormality
Code
Category
Content of Abnormality
01
,QGRRU8QLW
Activation of Protection Device
35
System
,QFRUUHFW6HWWLQJRI,QGRRU8QLW1R
02
2XWGRRU8QLW
Activation of Protection Device
(High Pressure Cut)
36
,QFRUUHFW,QGRRU8QLW&RPELQDWLRQ
03
Communication
Operational Irregularities between
Indoor and Outdoor
38
Problem with Protective Pickup Circuit
LQ2XWGRRU8QLW
04
Problem between Inverter PCB and
Outdoor PCB
39
Compressor
Problem with Running Current at
Constant Speed Compressor
05
Supply Phase Problem of Power Source Phases
41
Pressure
Overload Cooling
06
Voltage
Abnormal Voltage Drop in
2XWGRRU8QLW
42
Overload Heating
07
Cycle
Decrease in Superheated Discharge
Gas
43
Protection
Device
Activation of Pressure Ratio Decrease
Protection Device
08
Increase in Discharge Gas
Temperature
44
Activation of Low Pressure Decrease
Protection Device
09
2XWGRRU8QLW
Activation of Protection Device for
Outdoor Fan
45
Activation of Low Pressure Increase
Protection Device
11
Sensor on
,QGRRU8QLW
Inlet Air Thermistor Failure
46
Activation of High Pressure Increase
Protection Device
12
Outlet Air Thermistor Failure
47
Activation of High Pressure Decrease
Protection Device
13
Freeze Protection Thermistor Failure
48
Activation of Overcurrent Protection
Device
14
Gas Piping Thermistor Failure
51
Inverter
Problem with Inverter Current Sensor
19
Fan Motor
Activation of Protection Device for
Indoor Fan
52
Activation of Inverter Overcurrent
Protection
20
Sensor on
2XWGRRU8QLW
Compressor Thermistor Failure
53
Activation of Transistor Module
Protection
21
High Pressure Sensor Failure
54
Abnormality of Inverter Fin
Temperature
22
Outdoor Air Thermistor Failure
56
Outdoor Fan
Abnormality of Detection for Fan
Motor Position
23
Discharge Gas Thermistor Failure
57
Activation of Fan Controller Protection
24
Evaporating Thermistor Failure
58
Abnormality of Fan Controller
29
Low Pressure Sensor Failure
b0
System
,QFRUUHFW6HWWLQJRI8QLW&DSDFLW\
31
System
Incorrect Capacity Setting of
2XWGRRU8QLWDQG,QGRRU8QLW
b1
,QFRUUHFW6HWWLQJRI8QLWDQG
Refrigerant Cycle No.
32
,QFRUUHFW6HWWLQJRI2WKHU,QGRRU8QLW
Number
EE
Compressor
Compressor Protection Alarm
Summary of Contents for YVAHP072B31S
Page 2: ......
Page 10: ...viii Service Manual ...
Page 16: ......
Page 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Page 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Page 920: ......
Page 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Page 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Page 1728: ......
Page 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Page 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
Page 1795: ......
Page 1796: ... 2015 Johnson Controls Inc SM 15001 ...