Mitsubishi Heavy Industries FDC1000KXZWE1, Service Manual, Page: 46 / 183

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'14 • KX-SM-200
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[C68] Compressor stop causes
<Definition of signal>
Shows the latest compressor stop cause counted from right now.
(Excluding the ordinary stop, etc.)
Output of the No. is retained till next compressor stop cause occurs.
Compressor stop causes
Number
No history 0
Sensor wire breakage
Tho-A 1
Tho-R1 2
Tho-R2
3
Tho-D1 6
Tho-SC 8
Tho-H
9
Tho-S 10
Tho-C1 11
Tho-P1 13
High pressure sensor 15
Low pressure sensor 16
System anomaly detection
High pressure anomaly 20
Low pressure anomaly 21
Discharge temperature error (Tho-D1) 22
Liquid flooding anomaly (CM1) 24
External device anomaly
detection
Current cut (CM1) 32
Power transistor overheat (CM1) 34
Compressor startup failure (CM1)
36
Communication error between inverter PCB and
heat source unit control (CM1)
38
Anomalous compressor by loss of synchronism (CM1) 40
Communication error between the master unit and
slave units
42
Compressor stop by special
Operation mode change 50
Differential pressure startup prevention control 51
Protect for heating overload 52
Spare 53
'14 • KX-SM-200
[C67] Protection control status
<Definition of signal>
Shows the status of protection control in operation currently.
If two or more controls among the following protection controls are established simultaneously, No. of the control of which number
is larger is displayed.
Protection control status Number
Ordinary control
No operation of protective control 0
Protection control
During high pressure (HP) 1
During low pressure (LP) 3
During discharge pipe temperature (Td) 4
During specific pressure (SCR) 5
During under-dome temperature (Tc) 6
During current safe (CS) 7
During power transistor temperature (PT) 8
control
Water heat source related
Water heat exchanger freeze protection
Water pump not started 60
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