HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
HRS Series
3.2 Error Type and Alarm Set Value
3-3
Table 3-2 Error Type and Alarm Set Value (2/2)
Code
Descriptioin
Operation
Cause / Remedy
(Press the reset key after eliminating the cause.)
AL28
Maintenance of pump
Continued
The timing of a periodical check is informed.
Recommended to ask for the check and service of the
pump, fan motor and compressor.
AL29
2
Maintenance of fan motor
2
Continued
AL30
Maintenance of comprssor
Continued
AL31
Contact
input1
signal
detection
Stop
1
Contact input is detected.
AL32
Contact
input
2
signal
detection
AL33
Water leakage
Stop
1
・
Check if the leakage sensor is connected.
・
Leakage occurred. Check the leakage point.
AL34
Electric
resistivity/conductivity rise
Continued
Electrical resistivity/conductivity is larger than the set
value.
If an electric conductivity sensor is used, replace the DI
filter.
AL35
Electric
resistivity/conductivity drop
Continued
Electrical resistivity/conductivity is smaller than the set
value.
If an electric resistivity sensor is used, replace the DI filter.
AL36
Electric
resistivity/conductivity
sensor error
Continued
・
Check if the electric resistivity/conductivity sensor is
connected.
・
There may be short circuit or open wire of the
resistivity/conductivity sensor. Replace the sensor.
1
:
’’Stop” or “Continued” are default settings. The user can change them to “Continued” and “Stop”.
2: For air-cooled type.
