HOW TO ENTER
• Set thermostat to OFF mode
• Hold UP + FAN for 5 seconds
HOW TO NAVIGATE
• Press UP or DOWN to change setting value
• Press MODE to save setting value and proceed to next setting option
• Press FAN to return to previous setting option
HOW TO EXIT
• Press MODE until last setting page (99) has been saved or leave thermostat with no button press
for 60 seconds
• Note: You must press MODE to save each setting value
INSTALLER SETTINGS
CHANGING MODE
• Press MODE button to initiate mode selection menu
• Press MODE button until desired system mode is blinking. After 2 seconds of no button press
desired mode is selected
CHANGING SET TEMPERATURE
• Ensure thermostat is in correct system mode (Heat, Cool or Auto)
• Press UP or DOWN button. New set temperature will be displayed in large digits. After 2 seconds
of no button press new set temperature is selected
• If Programming mode is OFF, then new set temperature will be held indefinitely. If programming
mode is ON (see below), then new set temperature will be held until next scheduled set-point
change
CHANGING FAN SPEED
• Press FAN button to initiate fan speed selection menu
• Press FAN until desired fan mode is selected. After 2 seconds of no button press desired fan
mode is selected
• AUTO: fan operates as needed during a call for heating or cooling activation only.
• LOW: fan operates continuously in low speed. Heat/Cool will turn on/off in background as
needed.
• HIGH: fan operates continuously in high speed. Heat/Cool will turn on/off in background as
needed.
SETTING A KEYPAD / FRONT PANEL LOCKOUT
• While in any normal operating mode except OFF, a keypad lockout can be introduced which
will prevent any mode change, fan change or temperature adjustment from being made by the
user. Even when locked, any button press will illuminate the display backlight.
• To activate (and deactivate) the keypad lockout, set thermostat to heat, cool or auto mode then
hold FAN + UP buttons for 5 seconds. When the keypad is locked, a padlock will appear in the
lower left corner of the display.
SET CLOCK AND TEMPERATURE PROGRAM SCHEDULE
• NOTE: After 60 seconds with no button presses thermostat will exit the settings menu
• Set thermostat to OFF mode and hold MODE + UP buttons for 5 seconds. From this point you
have the following options
• Set thermostat real-time clock
• Set a heat schedule
• Set a cool schedule
• Use UP or DOWN buttons until desired section is blinking. Press MODE to enter selection.
• To exit press FAN or select “Exit” and press MODE
ADJUSTING THE REAL-TIME CLOCK
• Once the real-time clock menu has been selected use the UP or DOWN buttons to set each
variable. MODE will save value and proceed to next variable. FAN will return to prior variable.
• By default, the thermostat will automatically adjust the clock for Daylight Savings. This can be
disabled by changing the Auto Daylight Savings (setting 16) option in the installer menu
ADJUSTING THE HEAT OR COOL TEMPERATURE PROGRAM
• NOTE: Each period ends at the start time of the next upcoming period.
• NOTE: If configured to use only 2 periods, only DAY and NIGHT will be used, and the MORN
and EVEN periods will not be used or visible. If you use 1 period and 7 day programming, then
thermostat will reset to the desired set temperature at the same time each day.
• Once either HEAT or COOL programming sections has been selected, choose which day[s] to
schedule together (i.e. all weekdays together, or each day separately). Use the UP or DOWN
buttons to scroll through the blinking days and press the MODE to select each day with a
indicator dot. Press FAN to deselect any previously selected day. Once all desired days are
selected, move blinking selection to “SCHED” and press the MODE button to proceed.
• Adjust the start time of the first period using UP or DOWN buttons and press the MODE button.
Press the UP or DOWN buttons to set the desired temperature for the first period. Press the
MODE button to continue to the next period.
• Repeat until all periods have been set. Thermostat will return to day selection page.
• If all desired days have been scheduled select “EXIT” and press MODE. Otherwise use the UP
and DOWN buttons to move blinking selection to desired days and press MODE to select day[s]
for scheduling.
ENTERING EMERGENCY HEAT MODE (HP UNITS ONLY)
• While in HEAT mode, press DOWN + MODE for 5 seconds. The thermostat will show HEAT with
“E” to confirm Emergency Heat mode. This will use only the W2 terminal as the heating source
and will not call for compressor heating.
• To return to normal heating mode, set thermostat to HEAT mode, press and hold BOTH the
MODE and DOWN buttons for at least 5 seconds until the screen changes. The “E” will disappear
and only show “HEAT” to confirm regular Heat mode.
NORMAL OPERATION
Friedrich Air Conditioning Co.
10001 Reunion Pl Suite 500,
San Antonio, TX 78216
1-877-599-5665
www.friedrich.com
Note 1: Make the following Installer Settings for Heat Pump units
System
Type
Changeover
valve type
Required action
Heat Pump
B
1. Set Installer Settings Menu #06 to HP
O
1. Set Installer Settings Menu #06 to HP
2. Set Installer Settings Menu #07 to O
Note 2: When configured for Heat Pump operation, the “Y” terminal will be called for during both
cooling and first-stage heating operation. Do not connect any wires to the “W1” terminal.
Note 3: The “W2” terminal is used to call for Electric/ Auxiliary heat. If your Heat Pump PTAC does
not have Electric heat, then the “W2” terminal should not be used and Installer Settings menu 10
(Aux. Stage Offset) should be set to “OFF”.
Note 4: For PTAC units with only one fan speed (single “G” fan wire), use the “GL” terminal for wiring
and Installer Settings menu 12 (High Fan) must be set to “OFF”.
• Using the WIRING DIAGRAMS section, wire each
terminal on the thermostat base. Ensure that the bare
end is fully seated into the connector, then tighten
securely. Pull gently on wires to ensure they are secure.
• Important: For Heat Pump systems additional
configuration steps are necessary. View the WIRING
DIAGRAMS: Heat Pump section for details.
• If using battery power, insert 2xAA brand name alkaline
batteries now. If thermostat is wired with a c-wire, then
AA batteries are not required for normal operation. If
programming mode is used, AA batteries can provide
real time clock back-up during power outages.
Important: Alkaline batteries must be replaced once every 2 years regardless battery level. Failure
to replace batteries can lead to battery acid leakage and product failure.
• Return the thermostat front cabinet to its base by hooking the top first and then gently swinging
the bottom of the thermostat into place.
• Restore power back to heating and cooling components and thermostat.
• See INSTALLER SETTINGS MENU section, to adjust the required settings needed for each
system type.
Menu
Number
Function Description
User Option Number
Default
setting
11
(Not Used)
12
High FAN availability
ON: High fan available
OFF: High fan not available
ON
13
Programming mode
OFF: Manual
ON: Programmable
OFF
14
Clock Format
(Programming mode only)
12 : 12 hour
24 : 24 hour
12
15
Periods per day
(Programming mode only)
4: 4 periods per day
2: 2 periods per day
1: 1 period per day
2
16
Auto Daylight Savings
(Programming mode only)
ON: Auto DST on
OFF: Auto DST off
ON
17
Always On Backlight
(C-wire only)
OFF: turns off after 10s
ON: always ON
OFF
18
Reset to default set temperatures
after each mode change
ON: uses default temperatures after each mode
change (see menu 19 and 20)
OFF: Maintain last set temperature for each mode
ON
19
Default heat mode set temperature
60°F to Max Heat Set Temp
70°F
20
Default cool mode set temperature
Min Cool Set Temp to 80°F
74°F
98
Minimum off time -
Compressor protection
NO: Immediate off/ on switching
YES: 3-minute minimum off time enforced
NO
99
Reset
NO: no reset
YES: ex-factory reset
NO
WIRING DIAGRAM: Heat Pump
B/O
Y
W2
R
GH GL
C
HP Valve Compressor
24V
Power
High
Speed
Fan
Low
Speed
Fan
24V
Common
Electric /
Auxiliary
Heat
Note 1: If connecting to a Cool only PTAC unit, the W1 and W2 wire terminals will not be used and
Installer Settings menu 03 (Available Modes) should be set to “04: Cool Only”
Note 2: For PTAC units with only one fan speed (single “G” fan wire), use the “GL” terminal for wiring
and Installer Settings menu Item 12 (High Fan) must be set to “OFF”.
WIRING DIAGRAM: Heat - Cool
Y
W1
R
GH GL
C
Cooling
24V
Power
High
Speed
Fan
Low
Speed
Fan
24V
Common
Heating
Mounting on Junction Box (continued)
• Feed the wires through the back housing
of the thermostat and then snap the back
housing to the trim plate
• Your thermostat base should now be securely
fixed to the wall
Menu
Number
Function Description
User Option Number
Default
setting
01
Temperature Scale
F: Fahrenheit
C: Celsius
F
02
Temperature Calibration
+/- 5.4°F
0.0°F
03
Available modes
01 : Heat and Cool with auto
02 : Heat and Cool without auto
03 : Heat only
04 : Cool only
01
04
Max Heat Set Temp
F: 60 to 90 (5°F step)
80°F
05
Min Cool Set Temp
F: 60 to 80 (5°F step)
65°F
06
PTAC Type
H-C: Heat-Cool
HP: Heat Pump
H-C
07
HP valve type
b: B Valve
O: O Valve
b
08
Auto dead-band between heat and
cool operation in AUTO mode
2 to 5°F (1°F step)
4°F
09
Stage 1 Temperature Control Swing
±0.25°F
±0.50°F
±1.00°F
±2.25°F
0.50°F
10
Auxiliary Stage Cut-In Offset (only
used for HP system type)
OFF (No Electric / Auxiliary heat)
-3.0 to -8.0°F (1°F step)
-4.0°F
