Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual page 6

HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Order
Number
T8611G2002 TRADELINE®; Full seven-day program
capability. Programmable fan and back
lighting features. (Fig. 31).
T8611G2028 Same as T8611G2002 except Premier
White™, 7-day program capability.
Programmable fan and back lighting
features. (Fig. 31).
T8611M2017 TRADELINE®; full 7-day program
capability. Programmable fan and back
lighting features.
T8611M2025 Same as T8611M2017 except Premier
White™, 7-day program capability.
Programmable fan and back lighting
features.
PC8900A1007/ TRADELINE®; Perfect Climate Comfort
W8900B1002 Center™ Control System. 7-day (auto
copy) programming.
a I
n freezing climates, be sure the cooling compressor has adequate cold start protection.
b
SYSTEM LED lights when heating or cooling equipment is running.
c
CHECK LED indicates compressor malfunction.
d
EM. HT. LED indicates compressor malfunction.
e
CHECK LED comes on when 24 Vac is applies to the L terminal.
f
FAIL LED come on when a complete cirucuit is made on the X1 and X2 terminals.
g
CHECK LED lights to alert homeowner to HVAC maintenance or service needs.
70-6627 • 4
Table 1. Model Number Specifications (continued).
Description
Stages
Terminals Heat Cool
Y1,W1,W2, 2 1
G,E,L,R,C,
O/B,X1,X2,
OT,OT
Y1,W1,W2, 2 1
G,E,L,R,C,
O/B,X1,X2,
OT,OT
Y1,Y2/W2, 3 2
W3,G,E,L,
R,O/B,C,X1,
X2,OT,OT
Y1,Y2,W2, 3 2
W3,G,E,L,R,
O/B,C,X1,
X2,OT,OT
R,C,RH,Y1/ 3 2
W1,G,O/B,
AUX,E,Y2,
W2,L
Systems
Switch
Changeover
a
EM.HT.- Automatic
HEAT-OFF-
AUTO-
COOL
a
EM.HT.- Automatic
HEAT-OFF-
AUTO-
COOL
a
EM.HT.- Automatic
HEAT-OFF-
AUTO-
COOL
a
EM.HT.- Automatic
HEAT-OFF-
AUTO-
COOL
a
EM.HT.- Automatic
HEAT-OFF-
AUTO-
COOL
Led
Indication
e
CHECK
f
FAIL
e
CHECK
f
FAIL
e
CHECK
f
FAIL
e
CHECK
f
FAIL
g
CHECK
b
SYSTEM