T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—886
L1850 120 York Canada;
g
ra
y
color; includes one LED; used with
T874R1970; used in Y594R1789. Y594R1672a
L1868 125 TRADELINE; includes two LEDs; used with
T874R1988; used in Y594R1797; direct replacement
for Evcon/Coleman Y594R1235
(
T874R1368/
Q674L1421
)
Coleman part no. 3600-368.
Y594R1797a
L1876 245 Obsolete. Amana part no. 10573902; includes two
LEDs; used with T874R2002; used in Y594R1805. Y594R1797 Wirin
g
differences
(
old=new
)
:
C/X=X.
L1884 245 Obsolete. Amana part no. 10573904; includes two
LEDs; used with T874R2010; used in Y594R1813. Y594R1797 Wirin
g
differences
(
old=new
)
:
C/X=X, W3=W2.
L1892 103 Obsolete. TRADELINE; S
y
stem: SUPL HT-HEAT-
OFF-COOL; includes one LED; used with T874G2004;
used in Y594G1666; direct replacement for Carrier
Y507J1011
(
T874G1055/Q674L1041
)
Carrier part no.
HH07AT171/HH93AZ175.
Y594G1674 Replacement has auto
chan
g
eover.
L1900 241 Obsolete. TRADELINE; S
y
stem: SUPL HT-HEAT-
OFF-COOL; includes SUPL HT LED; used with
T874J1069; used in Y594J1001; direct replacement for
Carrier T874J1028/Q674J1068
(
Carrier part no.
HH07AT165/HH93AZ183
)
, Carrier T874J1002/
Q674J1068
(
Carrier part no. HH07AT175/
HH93AZ183
)
.
Y594J1019 Replacement has auto
chan
g
eover.
L1918 125 Obsolete. York lo
g
o; part no. 2TH11703424A; includes
two LEDs; used with T874R2028 in Y594R1821. Y594R1797a
L1934 123 Obsolete. Addison lo
g
o; part no. 843-277; includes
three LEDs; used with T874W1106 in Y594W1055. T8611M2025
Q674N S
y
stem: OFF-HEAT-COOL-EVAP; Fan: AUTO-ON
N1015 60 Obsolete. Goettl heat pump; chan
g
eover in heat mode;
evaporative cooler circuit; used with T874C1182. See OEM for
replacement.
N1023 61 Obsolete. Si
g
ler heat pump; evaporative cooler circuit;
used with T874C1349. See OEM for
replacement.
Q674P S
y
stem: SUPL HT-HEAT-COOL; Fan: AUTO-ON
P1005 126 Obsolete. Carrier heat pump; part no. HH93AZ169;
used with T874G1071
(
HH07AT171
)
.Y594G1419aWirin
g
differences
(
old=new
)
:
C=X;
j
umper Y1-W1;
replacement has OFF-EM HT-
HEAT-AUTO-COOL s
y
stem
switchin
g
.
Q674Q S
y
stem: HEAT-OFF-COOL; Fan: LOW-MED-HI-ON
Q1004 59 Obsolete. McQua
y
special; used with T874A1267. See OEM for
replacement.
Q1012 64 Used with T874A1291. None
Q674R S
y
stem: OFF-COOL; Fan: LO-HI-CONT
R1003 69 Obsolete. Carrier part no. HH93AZ190; international
s
y
mbols on fan and switches; used with T874V1008
(
HH07AT177
)
.
See OEM for
replacement.
Q674S S
y
stem: HEAT-COOL; Fan: None
S1000 70 Obsolete. Fiber
g
las; Canada; SERVICE LED; used
with T874C1653; used in Y594C1348. See OEM for
replacement.
Q674W S
y
stem: OFF-ON; Fan: LO-MED-HI
W1006 240 Obsolete. Sn
y
der General part no. 044271801. See OEM for
replacement.
Table 9. Q674 Subbase Cross Reference.
Model
Number Fig.
No. Description Q674 Trade
Replacement Remarks
aBoth the thermostat and subbase must be repl aced.