Hitachi PC-ARFG2-Z Installation & Maintenance Manual page 29

3. FrostWash setting on outdoor unit
To use this function in the VRF system, function selection F1 needs to be configured on the outdoor units.
FrostWash setting is disabled on the factory default setting.*
Set Function Selection F1 according to the following table.
"F1" Setting
Condition
"Interval" Time Duration
0 Factory Setting (Default): Not available FrostWash
1 Total Comp. Operation Hour: 500h
2 Total Comp. Operation Hour: 1000h
3 Total Comp. Operation Hour: 500h
4 Total Comp. Operation Hour: 1000h
Total Indoor Unit Fan Operation
5 Hour: Depending on Main Wired
Remote Controller Setting
*1: When the air conditioner system supports FrostWash function and the function selection F1 of outdoor unit
is set as valid , then the FrostWash is automatically valid.
*2: Change according to the outdoor unit.
*3: Change according to indoor temperature and outdoor temperature.
*4: Only one "Main wired remote controller" exists in the same refrigerant cycle, and all the others are "Sub
wired remote controller". Refer to "8. Main Remote Setting" in this manual for the details of Main Wired
Remote Controller setting.
*5: You can set the schedule for the FrostWash operation from the Main Remote Controller. Otherwise, the
FrostWash operation will start soon after the system is stopped.
NOTE:
•
Refer to the dedicated Service Manual for the FrostWash function.
11. Setback Trigger Unit
The setback trigger unit can be set from the Installation Menu.
Step1. Select the indoor unit by pressing " ", " ", " ", or " " and press
"OK" to display the confirmation screen.
Step2. Select "Yes" and press "OK" to confirm the setting. Then, please
wait a moment until the screen shows "Completed" or "Setting
Disabled".
If "Cancel" is selected, the screen returns to the Setback Trigger
Unit screen.
26
1
Auto-FrostWash
Start-up Timing
2 hours after system stopped
Within the time zone scheduled by
Main wired remote controller*
Within the time zone scheduled by
Main wired remote controller*
11. Setback Trigger Unit
Manual FrostWash
Operation
Operate outdoor unit PSW
4,5
Operate from Main wired remote
4
controller* or operate outdoor
4,5
unit PSW
Setback Trigger Unit
Setback Trigger Unit selectd:00-00
00-00
00-01
00-02
Select
OK
Setback Trigger Unit
00-00
00-00
Set this as trigger unit
00-01
00-02
Yes
OK OK Enter Select
Back
Cancel
Back Back
A16381H9HF