320
Troubleshooting
* Deletion of Alarm Code History
(6) Checking of Protection Control Information
Protection control code is displayed on 7-segment display while a protection control is activated. It is turned OFF when the
protection control is canceled. If several protection controls are activated, the code of the protection control with highest
priority will be displayed. Also if several retry control is activated, the code of the latest retry control will be displayed.
Rank Order. Indication Protection Control Performed
1 P1 Pressure Ratio Protection Control
2 P2 High Pressure Increase Protection Control
3 P3 Inverter Current Protection Control
4 P4 Inverter Fin Temperature Increase Protection Control
5 P5 Discharge Temperature Increase Protection Control
6 P6 Low Pressure Decrease Protection Control
7 Pd Low Pressure Increase Protection Control
8 PA Demand Current Control
9 P9 High Pressure Decrease Protection Control
②
Lower Rank Order of Protection Control Function
Forced
Decrease
Forced Increase
Prohibition of
Increase
Prohibition of
Decrease
①
Higher Rank Order
of Protection
Control Function
Forced Decrease
① ① ① ①
Forced Increase
① ① ① ①
Prohibited Increase
② ② ②
*
1
①
Prohibited Decrease
② ② ② ②
*1: Discharge Temperature Increase Protection Control (P05) is higher than the following protection controls.
a) Low Pressure Decrease Protection Control (P06)
b) Demand Current Control (P0A)
PSW2
PSW3
PSW3
PSW2
PSW3
PSW2
PSW3
PSW2
Pressing PSW1 for 5 seconds*
PSW3
PSW2
Alarm Situation
No.01 (Latest)
automatic changing
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