737 Flight Crew Operations Manual
Anti-Ice, Rain Chapter 3
Controls and Indicators Section 10
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D6-27370-866-EGP 3.10.1
10 Controls and IndicatorsControls and IndicatorsFile Highlight
Window Heat Panel
1 Window OVERHEAT Lights
Illuminated (amber) – overheat condition is detected.
Note: OVERHEAT lights also illuminate if electrical power to window(s) is
interrupted.
2 Window Heat ON Lights
Illuminated (green) – window heat is being applied to selected window(s).
Extinguished –
• switch is OFF, or
• an overheat is detected, or
• a system failure has occurred
• system is at correct temperature.
3 WINDOW HEAT Switches
ON – window heat is applied to selected window(s).
OFF – window heat not in use.
4 WINDOW HEAT Test Switch (spring–loaded to neutral)
OVHT – simulates an overheat condition.
OVERHEAT
ON
L
WINDOW HEAT
OVHT
SIDE
R
FWD
OVERHEAT
ON
OFFOFF
ONON
FWD SIDE
PWR TEST
OVERHEAT
ON
OVERHEAT
ON
FORWARD OVERHEAD PANEL
1
2
3
4
September 28, 2006
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