Ps: Suction Pressure of Compressor, Pd: Discharge Pressure of Compressor
(4) Activating Condition of Protection Retry Control Code
Protection Control or Retry Control is performed to prevent the abnormal operation.
The activating conditions are shown in the table below.
Code
Protection Control
Activating Condition
Remarks
P01 Pressure Ratio Protection
Control
Compression Ratio
e
>8.5
or
Compression Ratio
e
<2.0
-
P02 High-Pressure
Increase Protection
Discharge Pressure
Pd>3.45 (at Cooling Mode)
Pd>3.35 (at Heating Mode and Heat Recovery Mode)
-
P03 Inverter Current Protection
Inverter Output Current>(a)A
(a)
380-415V
22.5
-
P04 Inverter Fin Temperature
Increase Protection
Inverter Fin Temperature>80
o
C
-
P05 Discharge Gas Temperature
Increase Protection
Temperature at the Top of Compressor
Td>112
o
C
-
P06 Low-Pressure
Decrease Protection
Suction Pressure
Ps<0.1MPa
-
P09 High-Pressure
Decrease Protection
Discharge Pressure
Pd<1.0MPa
-
P0A Demand Current Protection
Control
Running Current for Compressor>Demand Current
Setting Value
Demand Current Setting Value:
Upper limit of total running current is
set 100%, 80%, 70%, 60% and 40% at
normal operation.
P0d Low-Pressure
Increase Protection
Suction Pressure>1.3MPa
-
Code
Retry Control
Activating Condition
Remarks
P11 Pressure Ratio
Decrease Retry
Pressure Ratio
e
<1.8
When activating 3 times in 30 minutes,
"43" alarm is indicated.
P12 Low-Pressure
Increase Retry
Ps>1.4MPa
When activating 3 times in 30 minutes,
"44" alarm is indicated.
P13 High-Pressure
Increase Retry
Pd>3.8MPa
When activating 3 times in 30 minutes,
"45" alarm is indicated.
P14 Overcurrent Retry of
Constant Compressor
* ico<2.5A over 50ms
* ico>icomax over 50ms
ico: Running Current of Constant Compressor
icomax: Maximum Current of Constant Compressor
Constant
Comp.
icomax
380-415V
E655
15.5A
E855
21.0A
When activating 3 times in 30 minutes,
"39" alarm is indicated.
P15
Discharge Gas Temperature
Increase Retry
Discharge Gas Temperature>132
o
C over 10 minutes
or
Discharge Gas Temperature>140
o
C over 5 seconds
When activating 3 times in 60 minutes,
"08" alarm is indicated.
Low-Pressure
Decrease Retry
Ps<0.09MPa over 12 minutes
When activating 3 times in 60 minutes,
"47" alarm is indicated.
P16 Discharge Gas SUPERHEAT
Decrease Retry
Discharge Gas SUPERHEAT<Tc+10 deg.
over 30 minutes.
Tc: Saturation Temperature
When activating 3 times in 120 minutes,
"07" alarm is indicated.
P17 Inverter Abnormality Retry
Instantaneous Overcurrent
When activating 6 times in 30 minutes,
"48" alarm is indicated.
Abnormality of Current Sensor
When activating 3 times in 30 minutes,
"51" alarm is indicated.
IPM Error
When activating 7 times in 30 minutes,
"53" alarm is indicated.
Fin Temperature>100
o
C
When activating 3 times in 30 minutes,
"54" alarm is indicated.
P18
Abnormal Inverter Voltage
Retry
Insufficient Voltage at Inverter Circuit
When activating 3 times in 30 minutes,
"06" alarm is indicated.
Excessive Voltage at Inverter Circuit
When activating 3 times in 30 minutes,
"06" alarm is indicated.
Inverter Failure Retry
Actual Inverter Frequency is 0Hz over 3 seconds after
Inverter Frequency is outputted.
When activating 3 times in 30 minutes,
"55" alarm is indicated.
P26 High-Pressure Decrease
Retry
Pd<Ta/130+0.1MPa over 4 minutes
or
Pd<1.0MPa over 60 minutes
Ta: Ambient Temperature
Without Alarm
220
V
38
.5
251
