Hitachi SAMURAI Series Service Manual page 102

Condenserless water chillers
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4. Troubleshooting
Summary of fault diagnosis
2 Caution
 Abnormalities that are not a hindrance for operation, but could lead to serious failure if neglected, are output as warnings.
LCD Display: Show 
3 Troubleshooting of the LCD Screen
In case that the screen does not proceed further from the display of the following figure  on the below upon power ON, it 
is because transmission between the LCD Screen and the CPU PCB is not taking place. 
Check wiring between the LCD Screen and the CPU PCB
Check wiring between the CPU PCB and transformer
95
SMGB0097 rev.0 - 07/2015
Caution occurrence
mark
Confirmation of details of abnormality in "Status" 
screen
Processing position of the caution part
Transition of the LCD Screen upon power ON
Remote caution display lamp: Lit ON
(Remote side)
4

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