Installation and User Guide
14 Pub. No. 18HD50D1-1A-EN 12/2018 Part No. 37-7768003
4.6 Installer Menu
To prevent changes that may affect system performance, this thermostat has an INSTALLER MENU and a USER MENU. The
INSTALLER MENU provides access to every option, while the USER MENU provides access to items that will not affect system
performance. To access the INSTALLER MENU press the Menu button for 8 seconds. The display will show item 05 in the table below.
Use Next and back to navigate through menu items. Press or or to change a menu setting.
INSTALLER MENU
(HOLD MENU 8 SEC-
ONDS)
DESCRIPTION DEFAULT SETTING
(FLASHING ICONS)
SETTINGS
(PRESS OR )
05
Outdoor Equipment: selects air conditioner (AC) or heat
pump (HP) equipment as well as the number of stage
AC2
AC0
AC1
AC2
HP1
HP2
10
Indoor Equipment: selects whether the equipment is a
gas furnace, electric furnace or fan only
EL2
FAN
GA1
GA2 (conventional only)
EL1
EL2 (conventional only)
15 dE
Dedicated Emergency: W/E only operates in Emergency
Aux mode. W2 becomes 1st stage Aux. Heat
OFF
On
OFF
20 R
O,B or 3 Wire Zone Valve Selection O
O
B
3
25 Fn
Circulation fan: sets the minimum % of time for the fan
to run (takes into account the fan run time with heat/cool
equipment)
OFF OFF, 10 TO 100
30 CR
Heat Cycle Rate: how often the heat will turn on MEd
SLO – slow
MEd – medium
FAS – fast
32 CR
Aux Cycle Rate: how often the auxiliary heat will turn on MEd
SLO – slow
MEd – medium
FAS – fast
35 CR
Cool Cycle Rate: how often the cooling will turn on MEd
SLO – slow
MEd – medium
FAS – fast
50 CL
Compressor Lockout:
protects the compressor from short cycling
OFF
On – 5 minute delay
OFF – no delay
65
Max Heat Limit: maximum set point for heat mode 99 47 to 99
66
Minimum Cool Limit: minimum set point for cool mode 45 45 to 97
74
Schedule Type: set as either 7-Day, 5-1-1 Day or Non-
Programmable
5
7 – 7 Day
5 – 5-1-1 Day
0 – Non Programmable
75
Defines periods per day 4
2 – P1, P2
4 – P1, P2, P3, P4
76 E
Early Start: starts heating or cooling early so your
programmed temperature is reached by the programmed
time
OFF
On – start early
OFF – start at program
period time
79
Fahrenheit or Celsius °F
°F – Fahrenheit
°C – Celsius
81
Temperature Display Adjustment: adjust the displayed
“Room Temperature”
0 -5 to +5
83 dL
Continuous Display Light: keep the backlight always on –
“C” wire required
OFF
On – always on
OFF – momentarily
86
Change Air Filter: set up a monthly reminder OFF
1 to 12 – reminder time
(months)
OFF – no filter reminder
88
Auto Changeover: thermostat automatically switches
between heat and cool
OFF
On – enable auto
OFF – disable auto
99
Keypad Lock: prevent unwanted changes to the
thermostat
OFF
On – disable buttons
OFF – all buttons are active
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