MD Helicopters MD Explorer - Page 422

CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 102
Original
21-40-00
Table 101. Heat / Defog System Troubleshooting (Cont.)
Fault Ref. SectionCorrective ActionProbable Cause
CAB HEAT illuminates
(RED) on IIDS Caution/Warn-
ing panel when heat/defog
system is operating and does
not automatically shut off
bleed air.
HEAT switch is in the OVRD
position.
Place HEAT switch to OFF
position.
21−40−00
NOTES:
(1) The IIDS automatically disables heat/defog in the event of fire/overheat bleed air leak indication. IIDS
illuminates CAB HEAT on Caution/Warning IIDS panel, interrupts electrical ground of flow control shutoff
valve through the IIDS.