HRX-OM-I051
Chapter 5 System Operation
5.3 Operation Screen HRZ Series
5.3.12 Alarm Display screen
Figure 5-14 Alarm Display Screen
In the event of an error in this system, the current screen is switched to the Alarm Display screen to display the
relevant alarm code. and message.
The Alarm Display screen is displayed only if an error is raised.
See section 6.2 “Troubleshooting” in “Chapter 6 Error Message and Troubleshooting” for alarm numbers and
messages.
5.3.13 System Information screen
Figure 5-15 System Information Screen
The System Information screen, as shown above, may be displayed upon system start/stop.
Table 5-13 System Information Screen
Initialize Mode (RESERVOIR)
The circulating fluid flows in this system through the
internal pump when turning ON the system. System
operation is disabled if this message is displayed.
Initialize Mode (CONTROL VALVE)
Positioning of the electronic expansion valve is performed
when turning ON the system. System operation is
disabled if this message is displayed.
Pump Up Mode, Running Start
If your piping is supplied with an insufficient amount of the
circulating fluid at system startup, the circulating pump in
this system is activated (repeating ON/OFF) to replenish
piping with the circulating fluid.
Continuous operation is initiated once piping is
replenished with the fluid.
CPRSR Down Mode, Running Stop
Compressor operation remains for approx. 30 seconds
after circulating pump stop for the protection of the
compressor at the time of sytem shutdown.
The internal pump is at halt for a given length of time for
protection of the pump.
This message turns off after a lapse of the specified time.
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