Piper Warrior III - Page 483

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 3
Nov 30/06
3D3
31-50-00
CHART 2 (Sheet 1 of 3)
TROUBLESHOOTING ANNUNCIATOR
Trouble Cause Remedy
All warning lights fail to illuminate. 5 amp ANNUNCIATOR PANEL Reset (push IN) circuit
circuit breaker open. breaker.
No current from bus. Check all wire segments,
connections, and
receptacle at the left side of
annunciator panel.
Test switch fail to activate Bad switch or connections. Check wires.
warning lights. Replace switch,
if necessary.
All warning lights do not go out Test switch shorted or bad Check wire connections
after engine is running. connections. and replace switch if
necessary.
Lights fail to dim when Defective K-3 relay in Replace relay.
DAY-NIGHT switch placed in annunciator box assembly.
NIGHT position.
Open wires from day/night Check wire connections.
switch to dimmer box.
LOW BUS VOLTAGE fails Blown bulb(s). Replace bulb(s)
to illuminate.
Blown in-line fuse between bus Replace fuse.
bar and Low Voltage Monitor.
Defective low voltage monitor Replace low voltage
in ammeter dimming control monitor.
assembly.
LOW BUS VOLTAGE fails to Open wire between between bus Locate and repair open
dim with switch in NIGHT position. bar and low voltage monitor; wire.
between low voltage monitor
and annunciator box assembly;
between annunciator box assembly
and annunciator light.
Defective K-3 relay. Replace relay.
PITOT HEAT OFF/INOP Blown bulb(s). Replace bulb(s).
fails to illuminate.
If pitot heat switch is OFF, Replace switch.
faulty switch.
Faulty pitot sensor assembly. Replace sensor assembly.
PITOT HEAT OFF/INOP fails to Open R-4 resistor in annunciator Replace resistor.
dim with switch in NIGHT position. box assembly.
Defective K-2 relay in Replace relay.
annunciator box assembly.