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VARC Chiller Controls Maintenance Mode
7 Maintenance Mode
In Maintenance mode you can disable any of the stages
in the system. This allows for ease of troubleshooting
and maintenance on one unit, while maintaining full
functionality for the other stages.
WARNING: ELECTRICAL SHOCK HAZARD.
Maintenance and repair should be performed
only by qualified technicians. Failure to obey this
warning could result in death or serious injury.
7.1 Accessing Maintenance Mode
from the LCDScreen
1. In the Main screen, press Enter and scroll up or down
to select OFF, then press Enter to save.
2. To access the Maintenance mode menu, press
Program, scroll to Technician, and then press Enter.
3. Scroll to service settings, then press Enter.
4. Enter the service password: 3156.
5. Scroll to Stage Disable, then press Enter.
6. For Stage Control, change No to Yes, press Enter,
scroll up, and then press Enter.
The screen displays the stages.
7. Press Enter to access each stage, then scroll up or
down to change from Auto to Disabled.
7.2 Accessing Maintenance Mode
from the TouchScreen
1. Tap the touch screen to view the menu buttons,
then tap Chiller Summary. See “Touch Screen” on
page 5.
I
The system must be in off mode to access
maintenance mode.
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