11 | 028-0228-06 November 2015
Indicates that the heating is energized by the low limit frost protection
room temperature setpoint 5.6 °C ( 42 °F )
Indicates that the clock needs to be reset. There has been a power failure
which has lasted longer than 6 hours
Indicates that there is a service alarm as per one of the configurable digital
input ( DI1 or DI2 )
Indicates that the filters are dirty as per one of the configurable digital input
( DI1 or DI2 )
Indicates that the heating and cooling action are locked out due to a
defective fan operation
Three status LEDs on the Room Controller cover are used to indicate the status of the
fan, a call for heat, or a call for cooling.
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
MULTISTAGE AND
SINGLE STAGE
MODELS
VT7600A, VT7652A,
VT7600B &
VT7652B
MULTISTAGE
ECONOMIZER
MODELS
When G Fan terminal
operates
When G Fan terminal
operates
When G Fan terminal
operates
When Y1 and / or W1
terminal(s) operate in
heating mode
When W1 terminal
operate in heating
mode
When W1 terminal
operate in heating
mode
When Y1 terminal
operate in cooling
mode
When Y1 terminal
operate in cooling
mode
When Y1 terminal
operate in cooling
mode and or
economizer output is
in function