Viconics VT7607 Installation Manual - Manual (Page 33)

33 | PIR Ready VT76x7 Series-Installation Guide
Terminal
Equipment
Controller will not
call for heating
Wrong mode selected Select heating mode
Terminal Equipment
Controller in
Unoccupied mode
Select Occupied Hold in Schedule hold or
Override to force the Terminal Equipment
Controller Occupied heating setpoint
Anti-cycle delay active
Wait, the anti-cycling period will end and
the equipment will start
Heating setpoint is
satisfied
Raise the Heating setpoint
Heating lockout
attained
1. Mode is locked out based on outside air
temperature
2. Change configuration parameter H Lock
to value 120 °F ( 49 °C ) to by-pass
lockout
Wiring error
1. Start the Fan by forcing the Fan ON
mode
2. Put a jumper across terminals RH &
W1. The heating should come ON. If it
does not, verify wiring and check if a
jumper is required between RC & RH
Terminal
Equipment
Controller will not
call for cooling
Wrong mode selected Select cooling mode
Terminal Equipment
Controller in
Unoccupied mode
Select Occupied Hold in Schedule hold or
Override to force the Terminal Equipment
Controller Occupied cooling setpoint
Anti-cycle delay active
Wait, the anti-cycling period will end and
the equipment will start
Cooling setpoint is
satisfied
Lower the cooling setpoint
Cooling lockout
attained
1. Mode is locked out based on outside air
temperature
2. Change configuration parameter C Lock
to value -40 °F ( -40 °C ) to by-pass
lockout
Wiring error
1. Start the Fan by forcing the Fan ON
mode
2. Put a jumper across terminals RC & Y1.
The cooling should come ON. If it does
not, verify wiring
The Terminal
Equipment
Controller will not
turn on the fan
Wrong mode selected 1. Start the Fan by forcing the Fan ON
mode
2. Put a jumper across terminals RC & G.
The fan should come ON. If it does not,
verify wiring
Wiring error
Digital display
shows missing
digits or erratic
segments
Defective display Replace Terminal Equipment Controller