46
8 - CONTROL
code
A
indicates the presence of an anomalous situation that does not affect the unit operation
code
B
indicates the unit compressor stop.
code
C
indicates the unit total stop
C6
protection about T4 temperature too high
C
C7
protection about T4temperature too low
C
P0
High discharge temperature protection
B
P1
High pressure protection
B
P2 Low
pressure
protection
B
P4
High current protection
B
P5
High T3 temperature protection in cooling mode
B
P7
High T2 temperature protection in heating mode
B
P9
SUPPLY DC fan protection
C
PA
EXHAUST DC fan protection
C
PP
Insufficient protection of discharge superheat
B
L0 Module
protection
C
L1
Low Voltage Protection
C
L2
High Voltage Protection
C
L3 Reserved
C
L4 MCE
fault
C
L5 Zero
speed
protection
C
L6 Reserve
C
L7 Phase
loss
C
L8
Frequencies change more than 15 Hz
C
L9
Frequency difference 15 Hz
C
LA
Compressor Overcurrent/Overload Protection
C
LC
Compressor Current Sampling Circuit Fault (Reserved)
C
LH
Compressor Start-up Failure (Reserved)
C
CA
Electric Auxiliary Heat Fault , It needs to be re-energized to recover
A
CB
Installation of Tc Sensor and T4 Sensor
B
CC
Electrical Filter Fault, It needs to be re-energized to recover
A
Summary of Contents for AIRFLOW2020
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