T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8
76
D1065
63
Obsolete. Includes two LEDs; used with T874F1122.
T874F1015/
Q674D1040
a
Replacement has no LEDs.
D1099
55, 66 Obsolete. Trane part no. BAS-0430; used with T874A-F.
Q674D1040
D1107
55, 66 Obsolete. Snyder General part nos. 654958801/
1520503/ 4ELN30070.
Q674F1040.
D1115
208
Trol-A-Temp; used with T874D1801.
None
See Trol-A-Temp.
D1123
208
Trol-A-Temp; gray color; used with T874D1827.
None
See Trol-A-Temp.
D1156
55
Obsolete. Gray color; includes removable jumper
between RC and RH terminals.
Q674D1040
Replacement is beige color.
D1164
66
Obsolete. Carrier part no. HH93AZ211; used in
Y594D1440.
Q674D1040
D1172
208
Obsolete. Amana logo; part no. P121501F; removable
jumpers between RC and RH terminals.
Q674D1040
D1180
55
Obsolete. York logo; part no. 2TH04703224A.
Q674D1040
D1198
55, 66 Obsolete. Standard OEM.
T874D1165/
Q674D1040
Replacement is beige color.
Q674E
System: OFF-HEAT-AUTO-COOL; Fan: AUTO-ON
E1007
82
Used with T874D1504; used in Y594D1180.
Q674E1049
E1015
84
Obsolete. Lennox heat pump; used with T874G1006,
G1154.
Y594G1252
a
Wiring differences (old=new):
R=O, M=Y, F=G, V=R, Y=W2;
E-W2 jumper required.
E1049
193
TRADELINE; used with T874D2031 and TG504A1025;
used in Y594D1354.
Q674E1049
E1056
82
Obsolete. Amana part no. D68535-7; used with
T874C1059, C1331; used in Y594C1009.
Q674E1049
RC-RH jumper required.
E1064
83
Obsolete. RC-RH jumpered internally; EM HEAT LED.
Q674E1049
E1072
82
Carrier part no. HH93AZ176; RC-RH jumpered
internally.
Q674E1049
RC-RH jumper required.
E1080
82
Trane part no. BAY28X184.
Q674E1049
E1098
85
Obsolete. Used with T874A-D.
Q674E1049
RC-RH jumper required.
E1106
185
Obsolete. ITT Nesbitt.
See OEM for
replacement.
E1114
87
Carrier part no. HH93AZ177; RC-RH jumper;
LOCKOUT LED to indicate compressor lockout; used
with HH07AT series thermostats.
Q674E1049
RC-RH jumper required;
replacement has no LED.
E1122
83
Obsolete. Square D part no. 63600-002-10; CHECK
LED.
Q674E1049
Replacement has no LED.
E1148
86
Obsolete. Lennox heat pump; used with T874G1014,
G1022.
Y594G1252
a
Wiring differences (old=new):
R=O, M=Y, F=G, Y=W2,
V-VR=R; must use single
transformer.
E1155
88
Obsolete. Lennox part no. 91C7501; HIGH and LOW
LEDs; used with T874B1076, D1017.
Q674E1049
Replacement has no LEDs.
E1197
89
Obsolete. McQuay part no. 02005961; two LEDs; used
with T874D1116.
Q674E1049
Wiring differences (old=new):
D=O; replacement has no
LEDs.
E1205
80
Obsolete. Fedders special; SERVICE LED; used with
T874D1462.
Q674E1049
Replacement has no LEDs.
E1213
82
York part no. 2TB04700224A.
Q674E1403
E1221
82
Heil Quaker part no. HQ712003HW.
Q674E1049
Table 9. Q674 Subbase Cross Reference.
Model
Number
Fig.
No.
Description
Q674 Trade
Replacement
Remarks
a
Both the thermostat and subbase must be replaced.