Hitachi RCUE40AG2 Service Manual page 100

Troubleshooting
Ex. High pressure interrupt device for
unit 1 is activated
(Cooling operation in unit 2)
  
Flickering alternately
  
Ex. Phase detection abnormality
(common abnormality)
  
Flicker
pag. 98
Abnormal code of segment indication part

In this section "abnormal code" is explained. See subchapter 5.2.3 "Method of failure
diagnosis" for the concrete treatment.
Segment Indication
abnormal code
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(fl icker)
 
 
SMGB0003 rev.0 - 10/2006
Activation of High Pressure Block Devise(63H)
Activation of Suction Pressure Block Device

Activation of Prevention Control for Suction Pressure Block
Decrease
Activation of Thermal Relay for Compressor (51C)
Activation of Discharge Gas Thermistor (Td)
Activation of Compressor Thermostat (49C)
Activation of Evaporating Temperature Thermistor (Tr)
Activation of Suction Gas Thermistor (Ts)
Phase Abnormality (Reverse Phase / Phase Failure) [Individual
power source spec: Option]
Outlet Chilled Water Thermistor Abnormality in some cycles
Activation of Freeze Protection Control Abnormality in some cycles
Activation of Water Overheating Protection Control Abnormality in
some cycles
Evaporating Temperature Thermistor Abnormality
Abnormality of discharge gas temperature Thermistor
Liquid Temperature Thermistor Abnormality
Abnormality of Outlet Water Temperature Thermistor for Protection
Suction Gas Temperature Thermistor Abnormality
Discharge Pressure Sensor Abnormality
Suction Pressure Sensor Abnormality
Abnormality of Setting Fan Number
Phase Abnormality (Reverse Phase / Phase Failure)
Inlet Chilled Water Thermistor Abnormality
Outlet Chilled Water Thermistor Abnormality in 1 cycle
Activation of Freeze Protection Control Abnormality in 1 cycle
Activation of Water Overheating Protection Control Abnormality in
1 cycle
Ambient Temperature Thermistor Abnormality
52P Pump Interlock Signal Abnormality
Operation Error / Setting Error
Error Communication between Ctrl. PCB and Ex. Valve PCB
Error Communication between Ctrl. PCB and Fan Speed control
PCB
Inverter Speed Control Abnormality
Inverter Excess Current Protection Abnormality
Inverter Position Detection Abnormality
Transmission Abnormality between Inverter and CPU PCB or
between Fan Speed Control PCB
Voltage Shortage or Excess Voltage in Inverter
During Activation of Pump Stop Control by Excess Increase of
Water Temperature
Water Shortage Protection Switch Activation (at 63W use; Option)
System Controller Connection Abnormality (at CSC-5S connection: System Controller Connection Abnormality (at CSC-5S connection:
Option)
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