Piper ARCHER III Pilot Operating Handbook page 286

SECTION 9
SUPPLEMENT 1
SECTION 7 - DESCRIPTION AND OPERATION (continued)
An "AC DOOR OPEN" CAS advisory alert will appear on the PFD
whenever the condenser door is open and remains on until the door is closed.
The "AC DOOR OPEN" CAS advisory will turn to a CAS caution if the
condenser door is open during engine out situations.
A circuit breaker located on the circuit breaker panel protects the air
conditioning electrical system.
Whenever the throttle is in the full throttle position, it actuates a micro
switch which disengages the compressor and retracts the condenser door. This is
done to obtain maximum power and maximum rate of climb. The fan continues
to operate and the air will remain cool for approximately one minute. When
the throttle is retarded approximately 1/4 inch, the clutch will engage and the
condenser door will extend, again supplying cool, dry air.
REPORT: VB-2749
9-8, 6 of6
PA-28-181, ARCHER III
ISSUED: December 22, 2017
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