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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
75 60-2485—8
C1389 205,
176
Obsolete. Command Aire part no. P1099-0021; two
LEDs; used with T874G-H.
None See thermostat description for
replacement information.
C1397 205,
171
Obsolete
. Command Aire part no. P1099-0023; used
with T874G-H.
None See thermostat description for
replacement information.
C1413 213 Obsolete
. Carrier part no. HH93AZ204; Fan: Lo-Med-
Hi
g
h-On; used with T874L1059.
See OEM for
replacement.
C1439 217 Obsolete
. Bard part no. 8404-016; used with
T874N1024.
See OEM for
replacement.
C1454 163 Obsolete
. Climate Master part no. AQ5354; two LEDs;
sprin
g
return momentar
y
s
y
stem switch position.
Y594G1393
a
No momentar
y
reset switch.
C1462 25 Climate Master Special. Q674C1058 Replacement has no LEDs.
C1470 221 Obsolete
. Climate Master part no. RQ5370; used with
T874H1138.
Y594H1012
a
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y; replacement has
MALFUNCTION LED onl
y
.
C1496 74 Obsolete
. Carrier part no. HH93AZ213; includes
SERVICE LED; used with T874H1161; used in
Y594H1038.
Y594H1012
a
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y; L-R
j
umper
re
q
uired.
C1504 83 Obsolete. Carrier part no. HH93AZ214; used in Y594.
Y594H1012
a
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y, L=R, R=none; R-
L
j
umper re
q
uired; no ni
g
ht
setback.
T8600D2028
(
pro
g
rammable
)
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y, L=R; W-Y
j
umper re
q
uired; ni
g
ht
setback.
C1512 97 Obsolete
. Carrier part no. HH93AZ216; S
y
stem:
Override-Auto-Off; includes two LEDs; used in Y594.
T8600D2028
(
pro
g
rammable
)
Wirin
g
differences
(
old=new
)
:
L=R, W=O; W-Y
j
umper
re
q
uired; ni
g
ht setback.
C1520 72 Obsolete
. Carrier part no. HH93AZ210; used with
T874D2049; used in Y594D1388.
Q674C1058
C1538 163 Climate Master part no. AQ5354; S
y
stem: Off-Auto-
Override; includes two LEDs and momentar
y
sprin
g
position.
Y594G1393 No momentar
y
reset switch.
C1546 76,
225
Obsolete
. McQua
y
part no. 060684802;
g
ra
y
color;
includes one LED.
Q674C1058 Replacement has no LEDs;
bei
g
e color
C1553 181,
203
Obsolete. McQua
y
lo
g
o; part no. 073319901; includes
one LED.
Q674C1058 Replacement is bei
g
e.
C1561 76 McQua
y
lo
g
o; part no. 073319701; includes one LED. See OEM for
replacement.
C1579 99,
100
McQua
y
lo
g
o; part no. 073320001; includes one LED. See OEM for
replacement.
C1595 72 Obsolete
. Standard OEM. Q674C1058
Q674D
S
y
stem: None; Fan: None
D1008 55, 66 Obsolete. Used with T874D1082, F1056; used in
Y594D1057.
Q674D1040
D1016 55 Obsolete
. Carrier part no. HH93AZ170; RC-RH
j
umper. Q674D1040 RC-RH
j
umper re
q
uired.
D1032 58 Obsolete. Bor
g
-Warner; used with T874G. T874D1165/
Q674D1040
a
Wirin
g
differences
(
old=new
)
:
Y=Y2, O=Y1, W=W2;
j
umper
W1-Y2 re
q
uired.
D1040 55 TRADELINE Q674D1040
D1057 55, 66 Obsolete. York part no. 2TB04700424A. Q674D1040
Table 9. Q674 Subbase Cross Reference.
Model
Number
Fig.
No. Description
Q674 Trade
Replacement Remarks
a
Both the thermostat and subbase must be replaced.