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. r·
Switch
52-1
ON=AZ45
OFF=AZ65
Switch
S3 -
3 and S3 - 4 are currently
not used
6. Reassemble and re-apply power.
Switch
15k BTU
12K BTU
9KBTU
7KBTU
Switch
S2-4
S2-2
OFF
ON
OFF
ON
S2-3
OFF
OFF
ON
ON
ON =
Make up air module
equipped
Switch
S3- 1
ON
= Heat pipe equipped
Switch
S3-2
ON
=
Outlet Air Thermistor
equipped - located on the
louver assembly
7. When the unit is powered on after replacing the board, the display will show"Pl."
Press the
11
+
11
button until the second digit matches the last number in the model
number as shown below.
Nomenclature
example
AZ 4 SE0 9 DABW 2
Engineering Revision
( t· . •'
I+
1- ....... , .....
. . p 2·. ·--
..u:::... -· -·
1 - .
t
hll
, ....
I.ft
=l
l
· -
-··-
--·
I
\
8. Press the red "Aux" button to save and exit, then verify proper operation.
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