Carrier Access Thermidistat - Manual (Page 3)

3. A2—for 2-speed air conditioner
4. H2—for 2-speed heat pump
5. dF—for 1-speed dual fuel
6. d2—for 2-speed dual fuel
7. HS—for 1-speed heat pump with Intelligent Heat Staging
(3-stage auxiliary heat with 40FK, FK4C, or FV4A Series fan
coils.)
When this identifier disappears, normal operation begins. The
MODE control should be set to OFF and FAN control to AUTO,
so equipment does not start until further configuration and check-
out is completed.
Step 4—Set Thermidistat Control Configuration
Configuration options, like DIP switch settings, are intended to be
selected at installation and normally are not modified by the
homeowner. These options are not discussed in the homeowner’s
manual and therefore must be made as part of the installation. A
special procedure allows entry into the configuration mode. While
in configuration mode, up to 17 selections can be made. A
description of each selection and how to use the configuration
mode follows.
CONFIGURATION OPTIONS — SUMMARY:
Option 1—Anticipator adjustment
Option 2—Clean filter timer adjustment
Option 3—English/Metric selection
Option 4—Fan (G) ON with W selection
Option 5—Variable-speed blower present selection
Option 6—Cooling lockout below 55° selection
Option 7—Variable-speed super dehumidification selection (only
available when variable-speed blower is used)
Option 8—Auxiliary heat lockout temperature setting (only avail-
able when heat pump is used)
Option 9—Intelligent Heat Staging selection (only available when
single-speed heat pump is used)
Option 10—Dual Fuel selection (only available when heat pump is
used)
Option 11—Balance point setting (only available when Dual Fuel
is selected)
Option 12—Defrost heat selection (only available when heat pump
is used)
Option 13—Room temperature offset adjustment
Option 14—Heat/cool dead band adjustment
Option 15—Enable Auto mode
Option 16—Enables Super Comfort Heat Mode
Option 17—Non-Programmable selection
TO ENTER CONFIGURATION MODE:
Press and hold FAN button for approximately 10 sec until COOL
set point display indicates a flashing 1. The Thermidistat Control
is now in configuration mode. It will automatically exit this mode
if no button is pressed for 3 minutes. Pressing END button will exit
configuration mode immediately.
WHILE IN CONFIGURATION MODE:
The upper small (COOL set point) display indicates selected
option number and large display indicates selection made within
that option. One of these will be flashing. The up and down buttons
are used both to move between available options and to make
selection for each option. When option number (small display) is
flashing, up and down buttons adjust it, moving between available
option numbers. After desired option number has been selected,
press SET TIME/TEMP button once. The large display will now
flash, indicating that up and down buttons now control available
choices within that option. Each press of TIME/TEMP button
switches between available option (small display) and available
selections within each option (large display).
CONFIGURATION OPTIONS — SELECTION:
Option 1—Anticipator Adjustment
This adjustment controls sensitivity and cycle rate of Thermidistat
Control. Higher numbers decrease sensitivity and slow cycle rate.
Lower numbers increase sensitivity and cycle rate. However, a
limiting feature will not allow more than 4 cycles per hr, regardless
of setting. Anticipator values can range from 1 to 9. Factory
default is 3. This default selection provides optimum performance
in nearly all installations. Try it first. Do not change setting unless
there is evidence of need to do so.
Unlike conventional anticipators, this setting is not determined by
current draw. There is no need to measure, know, or compensate
for current draw. There is also no droop with this Thermidistat
Control. Regardless of setting and number of stages, both heating
and cooling will control to their respective set points.
TO ADJUST:
1. Enter configuration mode if not already there. See Step 4 "To
Enter Configuration Mode." The upper small (COOL set
point) display will be flashing 1. If not, use up and down
buttons to move it to 1.
2. Press SET TIME/TEMP button once to flash current selection
of 1, 2, 3, 4, 5, 6, 7, 8, or 9 on large display. Factory default
is 3.
3. Use up and down buttons to move between available choices.
4. Press SET TIME/TEMP button again to flash upper small
display for selection of another option, or press END to exit
configuration mode.
Option 2—Clean Filter Timer
Select hours of blower operation (heating, cooling, or fan) before
CLEAN FILTER icon is displayed. With OFF selected, icon will
never come on, disabling this feature. Time selection can range
from 400 to 3600 hr by selecting numbers 1 through 9. (Time is
400 X number selected.) Factory default is 2 (800 hr). Recom-
mended selections are: disposable filter—400 to 800 hr, media
filter—1200 to 1600 hr, or electronic air cleaner—1600 to 2400 hr
of blower operation.
TO SELECT OR ADJUST:
1. Enter configuration mode if not already there. See Step 4 "To
Enter Configuration Mode." Use up and down buttons to make
small (now flashing) display indicate 2.
2. Press SET TIME/TEMP button once to flash current selection
of OF, 1, 2, 3, 4, 5, 6, 7, 8, or 9 on large display. Factory
default is 2.
3. Use up and down buttons to move between available choices.
4. Press SET TIME/TEMP button again to flash upper small
display for selection of another option, or press END to exit
configuration mode.
Option 3—English/Metric
Select between Fahrenheit and Celsius operation. Factory default
is Fahrenheit.
TO SELECT OR ADJUST:
1. Enter configuration mode if not already there. See Step 4 "To
Enter Configuration Mode." Use up and down buttons to make
small (now flashing) display indicate 3.
2. Press SET TIME/TEMP button once to flash current selection
of F or C. Factory default is F.
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