DOC1001322
Chapter 6 Alarm Notifications and Troubleshooting
6.3 Troubleshooting
HRL Series
Table 6.3-2 Alarm codes and troubleshooting (2/2)
1 Select from "OFF" / "WRN" / "FLT"
2 Select from "OFF" / "WRN"
3 The setting value can be changed.
4 Setting the electrical conductivity only when option ‘D’ is selected on.
Sub code Operation Threshold
1 Pump maintenance 20,000h
2 Compressor maintenance 30,000h
3 Fan maintenance 30,000h
4 Dust-proof filter maintenance 500h 3
8 Maintenance of circulating fluid
discharge pressure sensor
11 DI filter maintenance4 500h 3
1 High compressor intake temp. 60ºC
2 Low compressor intake temp. -10ºC
5 Refrigeration circuit high press. rise －
6 Refrigeration circuit high press. drop －
8 Refrigeration circuit low press. drop －
9 Refrigeration circuit low press. rise －
11 Compressor running failure －
12 Compressor discharge temp. rise
－
1 Circulating fluid temp. sensor －
2 Heat exchanger inlet temp. sensor －
3 Compressor discharge temp. sensor －
4 Compressor intake temp. sensor －
9 Refrigeration circuit high press. sensor －
10 Refrigeration circuit low press. sensor －
2 Internal communication error －
Controller failed.
Shut off the power to this product and restart it.
If it does not return to normal, ask for service.
Check that there is no abnormality with
the power supply system (e.g. ground fault,
short-circuit, voltage fluctuation, abnormal
interphase voltage, open phase, surge).
Compressor Inverter Comm.
Refrigerant circuit failed.
・Check that the ambient temperature,
heat load satisfy the specifications.
・Check that the circulating fluid flow rate
is more than the minimum flow rate.
・Ask for the service.
Short-circuit or broken wire of the sensor.
Ask for the service.
Cause/Countermeasure
(Please reset the alarm after eliminating the cause.)
"Maintenance reminder" occurred.
Please maintain the corresponding part.
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