– 45 –
Clip
Indoor Fan Capacitor
(Continued next page)
Outdoor DC Fan Motor
(Models AZ38H09DAC/EAC,
AZ38H12DAC/EAC, and AZ38H15DAC/EAC)
A DC outdoor fan motor is used on the 9000,
12000, and 15000 BTU/hr corrosion protection
models. The use of a DC fan motor results in greater
effi ciency and lower operating costs in high demand
applications.
Disconnect the DC outdoor fan wiring at CN108 on
the power supply board. Check for resistance on the
fan motor wiring at the following places:
Black to red = 0.9
Ω (
Reversing the polarity of the
test leads, black to red will indicate an open circuit.)
Black to white = approximately 0.4
Ω
Β
lack to orange = approximately 0.7
Ω
Red to white = approximately 1.4
Ω
Blue to black = approximately 1.9
Ω
Blue to white = approximately 2
Ω
Orange to white = approximately 1.3
Ω
Note:
To remove the outdoor DC fan motor, follow
the instructions for the AC fan motor removal with
these exceptions:
The outdoor DC fan motor does not utilize a run
capacitor.
Disconnect the outdoor fan wiring at CN108 on
the power supply board.
There is no clip at the top left corner of the
control box that holds the wiring in place.
•
•
•
• Black to red = approximately 225
Ω
• Black to white = approximately 270
Ω
• Red to white = approximately 45
Ω
With unit plugged in and operating in cooling mode,
disconnect fan motor harness and test for supplied
voltage on the fan harness wiring.
• Black to red (high speed) - 230/208 VAC
• Black to white (low speed) - 230/208 VAC
To remove the indoor AC fan motor:
Remove the room cabinet (see
Room Cabinet
).
Remove the chassis from the case.
Remove the outdoor fan and shroud assembly
(see
Outdoor AC Fan Motor
).
Disconnect the yellow and brown wires from the
indoor fan motor capacitor. Disconnect the wire
harness from CN101 on the power supply board.
Unsnap the clip at the top left corner of the
control box that holds the wiring in place.
Remove all associated wire ties and retainers.
1.
2.
3.
4.
5.
Indoor AC Fan Motor
(All models except
AZ38H09DAC/EAC, AZ38H12DAC/EAC, and AZ38H15DAC/EAC)
The indoor fan motor is a 2-speed thermally
protected motor located on the outside of the
indoor coil housing, behind the indoor coil.
With wiring disconnected from the power supply
board location CN101 and from the fan capacitor,
check for resistance on the fan harness wiring.
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