Self-Inspection Functions; Alarm Indication - Hitachi RCUE40AG1 Installation, Operation And Maintenance Instructions

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Brine Option Setting = DSW4
When the brine option is requested, the figure 4 of the
DSW4 must be turned to the ON (UPPER) side.
It is possible to set the temperature of brine outlet from
-10°C to 15°C.

9. SELF-INSPECTION FUNCTIONS

9.1. ALARM INDICATION

If the unit is operated under abnormal conditions, an alarm
code(refer to the table below) is indicated and the "Alarm"
LED lamp is lighted.
Function of 7-Segment Light Emitted Diode on Control
Panel is as shown in the table below.
Code
No.1 No.2 No.3
cycle cycle cycle
C1-H1 C2-H2 C3-H3
C1-L1 C2-L2 C3-L3
C1-t1 C2-t2 C3-t3
C1-41 C2-42 C3-43
C1-51 C2-52 C3-53
C1-71 C2-72 C3-73
C1-61 C2-62 C3-63
C1-o1 C2-o2 C3-o3
C1-28 C2-28 C3-28
C1-27 C2-27 C3-27
C1-26 C2-26 C3-26
C1-21 C2-21 C3-21
C1-23 C2-23 C3-23
C1-24 C2-24 C3-24
C1-P6 C2-P6 C3-P6
6E-6E
AP-AP
13-13
C1-05 C2-05 C3-05
C1-5P C2-5P C3-5P
"C1"- "C2"- "C3"-
"Pu" "Pu" "Pu"
40-40
11-11
12-12
15-15
16-16
22-22
" " - " " : Flickering. XX - XX : SEG1-SEG2
No.4 No.5 No.6
cycle cycle cycle
C4-H4 C5-H5 C6-H6 Activation of High Pressure Switch
C4-L4 C5-L5 C6-L6 Excessively Low Pressure
C4-t4 C5-t5 C6-t6 Low Pressure Protection with Suction Gas Thermistor
C4-44 C5-45 C6-46 Activation of Fan Motor Internal Thermostat
C4-54 C5-55 C6-56 Activation of Thermal Relay for Compressor
C4-74 C5-75 C6-76 Activation of Compressor Internal Thermostat
C4-64 C5-65 C6-66 Activation of Discharge Gas Thermostat
C4-o4 C5-o5 C6-o6 Activation of Differential Pressure Control
C4-28 C5-28 C6-28 Failure of Suction Gas Pressure Sensor (Open / Short)
C4-27 C5-27 C6-27 Failure of Discharge Gas Pressure Sensor (Open / Short)
C4-26 C5-26 C6-26 Failure of Suction Gas Thermistor (Open / Short)
C4-21 C5-21 C6-21 Failure of Cooler Inlet Refrigerant Thermistor (Open/Short)
C4-23 C5-23 C6-23 Failure of Discharge Gas Thermistor (Open / Short)
C4-24 C5-24 C6-24 Failure of Thermistor set before Expansion Valve (Open / Short)
C4-P6 C5-P6 C6-P6 Freezing Protection Control by Cooler Inlet Refrigerant Temperature
Alarm of Water Failure (Differential Water Pressure Switch Option)
Activation of Additional Protection Device
Freezing Protection
C4-05 C5-05 C6-05 Phase Abnormally
C4-5P C5-5P C6-5P No Signal Feedback from Water Pump
"C4"- "C5"- "C6"-
Alarm of Excessively High Water Temperature
"Pu" "Pu" "Pu"
Malfunction
Failure of Water Inlet Temperature Thermistor (Open / Short)
Failure of Water Outlet1 Temperature Thermistor (Open / Short)
Failure of Water Outlet2 Temperature Thermistor (Open / Short)
Failure of Water Outlet3 Temperature Thermistor (Open / Short)
Failure of Ambient Temperature Thermistor (Open / Short)
NOTE:
The other information of brine option are on page 29 and
32.
SEG.1 SEG.2
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Content
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7 Segments on
Control Panel