
11 | VZ7656E1000W Installation Guide
Discharge
Air
Temperature
Effective
PI Heat
Demand
at RTU
Effective
PI Cool
Demand
at RTU
Effective
CO2 Level
at RTU
Highest PI
Heat
Demand
Zone
Address
Highest PI
Cool
Demand
Zone
Address
Highest
CO2 Level
Zone
Address
Indicates that the discharge air temperature is either too low or too high.
Indicates that the Fresh Air Level is either too low or too high.
Indicates that the clock needs to be reset. There has been a power failure
which has lasted longer than 6 hours.
Indicates that the CO
2
Level value is higher than the Max CO
2
parameter
value.
The communication between devices has been lost (No Communication)
When any of the fan is ON, the FAN LED will illuminate
When heating is ON, the HEAT LED will illuminate
When cooling is ON, the COOL LED will illuminate
USER INTERFACE
User configuring instructions menu
The VZ7656 series of controllers feature an intuitive,
menu-driven, back-lit LCD display that walks users and
installers through the configuring steps, making the
configuring process extremely simple. This menu is
typically accessed by the user to set the parameters
such as the clock time set, the schedule time events
and the system mode.
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