Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 703 / 1956

PAGE 1
Feb 28/07
30-40-00
3J15
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
Trouble Cause Remedy
Windshield fails to heat or Circuit breaker tripped Reset circuit breaker.
no change between LOW
and HIGH position
Relay failure Replace relay.
Controller failure Replace controller.
Broken wire in harness. Repair broken wire.
Cannon plug loose or dirty. Clean and re-engage
cannon plug.
Switch defective. Replace switch.
Poor connection on terminal Tighten screws on terminal
strip. strip in console.
CAUTION: SEVERE OVERHEATING OF WINDSHIELD COULD RESULT IN WARPING AND
DISTORTION.
Windshield overheats Timer shorted. Replace timer-temperature
control.
Windshield heat left on Manually turn windshield
too long. heat off.
CHART 1
TROUBLESHOOTING HEATED WINDSHIELD SYSTEM
WINDOWS AND WINDSHIELDS
Heated Windshield (See Figure 1.)
When installed, the heated windshield consists of an electrically heated left windshield. Circuit protection
is provided by the windshield heat CONTROL and POWER breakers in the ICE PROTECTION section of
the pilot’s circuit breaker panel.
A. Troubleshooting
See Chart 1.
B. Testing
CAUTION: AMBIENT TEMPERATURE OF WINDSHIELD MUST BE BELOW 115° F.
CAUTION: DO NOT ALLOW HEATED WINDSHIELD TO BE ON HIGH POSITION FOR MORE
THAN 20 SECONDS FOR TESTING OR GROUND OPERATION. HEAT DISTORTION
OF THE WINDSHIELD COULD RESULT.
(1) With engine running at 1,500 rpm (or, at idle for S/N’s 4636001 thru 4636020 only ), battery
master ON, and one alternator ON: position windshield heat switch to LOW. The ammeter
should indicate an increase.
(2) Position windshield heat switch to HIGH. The ammeter should indicate an additional increase.
(3) If heated windshield does not perform as indicated, see Chart 1.