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2010 Electrolux Home Products, Inc. All rights reserved.
12
R
Y
GH
GL
C
W
O
AUXILIARY CONTROLS
TERMINAL CONNECTIONS
The wall thermostat terminal block is located behind the front panel and is easily accessible on front of
control panel.
Fig.20– Terminal Connector and Status LED Location
STATUS LED
Energy Management
Terminal Connections
Wall Thermostat
Terminal Connections
TYPICAL WALL THERMOSTAT
Energy
management
(24VAC in)
Common
See Note 1
See Note 2
TERMINAL BLOCK
NOTES:
1. Use terminal “O” for heat pump connection only.
2. Terminal “C” (common) is typically only required
for digital thermostats.
TERMINAL DESIGNATION
R 24 VAC
W Electric Heat
Y Compressor
O Reversing Valve
GH High Fan
GL Low Fan
C Common
NOTE: Any incorrect 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.21–Wiring Connections
! CAUTION
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.
!
CAUTION
ENERGY MANAGEMENT INPUT (FRONT DESK CONTROL)
The controller can handle a switch signal from remote energy management input, called EM signal 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. 20 and
Fig. 21 for terminal connections.
INTELLIGENT SELF-CHECKING CONTROL
Your Frigidaire PTAC has a computer on-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
steadily ON. 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 a minor error and the unit can correct it 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.23).
Failure STATUS codes are defined in the table below
Table 5—STATUS LED Indicator
Definitions
1
Indoor air temp sensor open/short
8-segment display ‘F1’, with STATUS light flash 1 times and off 3 sec, repeat
2
Indoor coil sensor open or short
8-segment display ‘F2’, with STATUS light flash 2 times and off 3 sec, repeat
3
Outdoor coil sensor open/short
8-segment display ‘F4’, with STATUS light flash 3 times and off 3 sec, repeat
4
Freeze Guard protection
8-segment display ‘FP’
5
Indoor coil freeze protection
STATUS light flash 5 times and off 3 sec, repeat
6
Outdoor coil high temp protection STATUS light flash 6 times and off 3 sec, repeat
7
Defrost (heat pump type) STATUS light flash 7 times and off 3 sec, repeat
8
Indoor coil high temp protection STATUS light flash 8 times and off 3 sec, repeat
9
Thermostat wiring error
STATUS light flash 9 times and off 3 sec, repeat
NOTE: When status
light is flashing, it will
be ON for 1 seconds
and OFF for anothe
r
1 seconds.
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