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Hitachi RAS-(4-12)HRNM(2)(E) - Page 306

Hitachi RAS-(4-12)HRNM(2)(E)
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8 Troubleshooting
296
SMGB0064 rev.0 - 08/2011
Code Protection Control
P 7
Inverter-Trip Retry Control
P 8
Voltage Drop (or Overvoltage) Retry Control
P 9
Protection Control for Power Source Voltage Unbalance Detection
P A
Current Demand Control
P b
Suction Pressure Decrease Prevention Control
Retry indication continues for 30 minutes unless a protection control is indicated.
Retry indication disappears if the stop signal comes from all rooms.
Code Protection control
P 7
Inverter Retry
P 8
N O T E
The protection control code being indicated on 7.segment display is changed to an alarm code when the ab-
normal operation occurs. Also, the same alarm code is indicated on the remote control switch
Activating condition of protection control code
For following the conditions as the temperature change, etc., the control of frequency, etc. is performed to prevent the
abnormal conditions by the protection control.

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