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Stopping cause state indication
16
Stopping cause state indication
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Cause of Stoppage
Code
Operation OFF, Power OFF
01
02
Thermo-OFF
03
Alarm*1
04
Freeze Protection, Overheating Protection
Instantaneous Power Failure at Outdoor Unit/Reset*2
05
Instantaneous Power Failure at Indoor Unit/Reset*3
06
Stoppage of Cooling Operation due to Low Outdoor Air Temp. Stoppage of Heating Operation due to High Outdoor Air Temp.
07
Stoppage of Reversing Valve Switching Control
09
10
Demand Enforced Stoppage
11
Retry due to Pressure Ratio Decrease
Retry due to Low Pressure Increase
12
13
Retry due to High Pressure Increase
14
Retry due to Abnormal Current of Constant Speed Compressor
15
Retry due to Vacuum Abnormality, Discharge Gas Temp. Increase
16
Retry due to Decrease of Discharge Gas Superheat
17
Retry due to Inverter Tripping
18
Retry due to Voltage Decrease, Other Retry of Inverter
19
Expansion Valve Opening Change Protection
Operation Mode Difference between IDU and ODU/ Stoppage of Operation Mode Switching during Operation
20
21
Enforced Thermo-OFF*4
22
Enforced Thermo-OFF (Hot Start Control at Crankcase Heater Preheating)
Enforced Stoppage of compressor due to DIP switch (DSW) Setting
23
24
Thermo-OFF during Energy-Saving Operation
26
Retry due to High Pressure Decrease
Retry due to Operation of Outdoor Blower Protector
27
28
Stoppage due to Outlet Temp. Decrease in Cooling
29
Retry due to Abnormal Current during MS Motor Synchronous Operation
30
Stoppage of Thermo-OFF due to Compressor Excepting
32
Retry due to Abnormal Transmission of Outdoor Unit
33
Enforced Thermo-OFF due to Enforced Cleaning Operation
34
Stoppage of Thermo-OFF by Motion Sensor
35
Retry due to Abnormal Refrigeration Cycle
36
Retry after Defrosting Operation
?
N O T E
*1 Even if stoppage Alarm "02" is not always indicated. If the unit is thermo-OFF due to another cause of stoppage prior to alarm occurrence, the
•
code of the cause remains.
*2 The outdoor unit equipped with an inverter resets ODU Micro-Computer if the transmission between inverter PCB and outdoor unit PCB is
•
interrupted for 30 seconds. Therefore, the stoppage cause code when Alarm 04 occurs may be "05".
*3 IDU Micro-Computer is reset if the transmission between the indoor unit and the outdoor unit is interrupted for 3 minutes. Therefore, the
•
stoppage cause code when Alarm 03 occurs may be "06".
*4 If the stoppage cause code "21" is indicated on the indoor unit of twin, triple, or quad, check the stoppage cause of other indoor unit numbers.
•
83
PMML0601 rev.0 - 07/2022
d1
01
Refer to "Cause of Indoor Unit Stoppage"
Cause
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