PTAC Owners Manual

STATUS LED
Wall Thermostat
Terminal Connections
Energy Management
Terminal Connections
A07088
CAUTION
!
R
Y
GH
GL
C
W
O
Common
TYPICAL WALL THERMOSTAT
TERMINAL BLOCK
A07076
TERMINAL DESIGNATION
R 24 VAC
W Electric Heat
Y Compressor
O
GH High Fan
GL Low Fan
C Common
Table 6—STATUS LED Indicator Definitions
1
2
3
4
5
6
7
8
9
TERMINAL CONNECTIONS
The wall thermostat terminal block is located behind the front panel and is easily accessible on front of control
panel.
Energy
Management
(24VAC in)
See Note 1
See Note 2
Fig. 24– Terminal Connector and Status LED Location
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Improper wiring may damage unit electronics. Common
busing is not permitted. Damage or erratic operation may
result.
NOTES:
1. Use termina l “O” for heat pump conne ction only.
2. Terminal “C” (common) is typically only required for digital
thermostats.
Reversing Valve
NOTE: Any illegal input combinations will be captured as thermostat wiring
failures and will light the STATUS LED indicator on main board
(see Intelligent Self ---Checking Control section)
Fig.25 – Wiring Connections
2. If a thermostat of other brand is equipped, make sure O signal gives
start-up command in cooling mode, and shutdown command in heating mode.
ENERGY MANAGEMENT INPUT (FRONT DESK CONTROL)
The controller can handle a switch signal from remote energy management input, called EMsignal or front desk
control. Input must be 24VAC. If system receives a 24VAC signal, it will turn unit off; otherwise, the unit runs in
normal control. This function will be disabled under Freeze Guard protection. See Fig. 24 and Fig. 25 for
terminal connections.
INTELLIGENT SELF--CHECKING CONTROL
Your Blueridge PTAC has a computer board that continuously checks key components of the unit to ensure they are
operating properly. Under normal operation, unit status indicator (STATUS, on main PCB), light is steadilyON.
If there is a major problem, the unit will shut down and display a diagnostic failure code on the unit’s display. If
it is only aminor failure and unit is correcting the fault by itself, the diagnostic code will be flashed on the status
LED that can easily be seen when the front panel is removed (see Fig. 24). Failure STATUS codes are defined in
the table below.
Indoor air temp. sensor open/short
Indoor coil sensor open or short
Outdoor coil sensor open/short
Freeze Guard protection
Indoor coil freeze protection
Outdoor coil high temp. protection
Defrost (heat pump type)
Indoor coil high temp. protection
Thermostat wiring error
8-segment display ‘F1’, with STATUS light flash 1 times and off 3 sec, repeat
8-segment display ‘F2’, with STATUS light flash 2 times and off 3 sec, repeat
8-segment display ‘F4’, with STATUS light flash 3 times and off 3 sec, repeat
9 STATUS light flash 9 times and off 3 sec, repeat
8-segment display ‘FP’
STATUS light flash 5 times and off 3 sec, repeat
STATUS light flash 6 times and off 3 sec, repeat
STATUS light flash 7 times and off 3 sec, repeat
STATUS light flash 8 times and off 3 sec, repeat
NOTE: 1. It is recommended to equip a
brand compatible thermostat.
Blueridge
Please contact technical support personnel.
Blueridge
12