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Step 6. Install supplied batteries
Install two new AA alkaline batteries (included). Do not mix old and new
batteries
Step 7. Reassemble the thermostat
No tools required – simply snap the thermostat face back on the thermostat.
8
Y1
O/B
W2
L
C
R
1ST
STG
COMP.
REV
VALVE
DEFROST
SERVICE
OUTDOOR HEAT PUMP UNIT
FAN
RELAY
AUX.
HEAT
R
HEAT/BLOWER EQUIPMENT
C
G
W2
Y1
1ST STAGE COMPRESSOR
L1
L2
120
VAC
24
VAC
R
G
Y
W2
O/B
C
L
COOL
HEAT
LO
ON
AUTO
CHECKAUX
APRILAIRE MODEL 8346
OR 8365 THERMOSTAT
RED
BLK
WHT
YLW
ORG
BLU
BLU
ORG
YLW
WHT
GRN
BLK
RED
ORG
RED
BLK
GRN
YLW
WHT
BLU
RED
BLU
BLK
WHT
ORG
YLW
Diagram 3 – Model 8346 or 8365 Thermostat Wiring
NOTES:
1. Wire colors shown
for reference only.
2. Common (C)
connection required
only for thermostat
LED operation.
SEE NOTE 2