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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
69 60-2485—8
R1889 120 Honeywell logo; designed to replace Y594R1151 (York
part no. 2TH11702324), Y594R1193 (York part no.
6TH11702224), and York part no. 2TH11704024; used
with Q674L1736 and C815A1054; used in Y594R1672.
Y594R1672
a
R1897 230 Honeywell logo; Premier White® color; used with
Q674L1751; used in Y594R1680.
Y594R1680
a
R1905 120 Obsolete. Honeywell logo; Premier White® color;
designed to replace Y594R1151 (York part no.
2TH11702324), Y594R1193 (York part no.
6TH11702224), and York part no. 2TH11704024; used
with Q674L1777 and C815A1054; used in Y594R1698.
Y594R1672
a
Replacement is beige.
R1913 120 Obsolete. Honeywell logo; Premier White® color;
designed to replace Y594R1011 (York part no.
2TH11702224); used with Q674L1777; used in
Y594R1706.
Y594R1664
a
Replacement is beige.
R1921 115 Obsolete
. Econar logo; used with Q674L1207; used in
Y594R1722.
Y594R1243
a
R1939 197 American Standard logo (Trane); part no.
ASYSTAT651A; includes outdoor reset; used with
Q7674L1801; used in Y594R1748.
Y594R1763
a
R1947 168 Obsolete. Inter-City Products logo; part no.
HQ1149406HW; used with Q674L1819; used in
Y594R1755.
Y594R1425
a
R1954 197 Honeywell logo; TRADELINE model; includes outdoor
reset; used with Q674L1827; used in Y594R1763.
Y594R1763
a
Direct replacement for
Y594R1748 (T874R1939/
Q674L1801) American
Standard logo (ASYSTAT
651A) and Y594R1136
(T874R1053/Q674L1140).
R1962 115 Obsolete
. Consolidated Industries logo; part no.
9036100; Premier White® color; used with Q674L1843;
used in Y594R1771.
Y594R1680
a
Includes CHECK LED.
R1970 120 York logo; Canada; Premier White® color; °C scaleplate;
used in Y594R1789; used with C815A1039.
Y594R1672
a
Replacement has °F
scaleplate.
R1988 125 Honeywell logo; TRADELINE model; used with
Q674L1868; used in Y594R1797.
Y594R1797 Direct replacement for
Y594R1235 (T874R1368/
Q674L1421) Evcon/Coleman
part no. 3600-368.
R2002 245 Obsolete
. Amana Air Conditioning logo; part no.
10574102; used in Y594R1805.
Y594R1797 Wiring differences (old=new):
C/X=X.
R2010 245 Obsolete
. Amana Air Conditioning logo; part no.
10574104.
Y594R1797 Wiring differences (old=new):
C/X=X, W3=W2.
R2028 209 Obsolete
. York logo; part no. 2TH11703424A; used with
Q674L1918 in Y594R1821.
Y594R1797
R2036 134 Ruud logo; °C scaleplate; used with Q674L1504. See OEM for
replacement.
T874S 2-stage heat, 3-stage cool.
S1001 223 Obsolete
. Carrier Synergy 2000 Heat Pump System
Control logo; used with Q674F1501.
T8611M2025
(programmable)
or see OEM for
direct
replacement.
Includes night setback.
T874V 1-stage cool.
V1008 69 Obsolete
. No logo; Carrier part no. HH07AT177; used
with Q674R1003.
T874A1036
Table 8. T874 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement Remarks
a
Both the thermostat and subbase must be replaced.