No Comm From Micro to INPBD1
system
Description
The main microprocessor cannot communicate internally, and the unit shuts down all modules except the display and alarm.
Activation Conditions
Alarm 21100 No Comm from Any Board to Main Micro is not active and the main microprocessor cannot communicate internally.
Unit Behavior
Engine and Electric Operation: Shutdown all modules except the display and alarm. (The alarm will only display if the display module is communicating.) Main microprocessor status LED will illuminate steady green (not pulsing).
Reset Conditions
Auto reset when internal communication is restored, alarm reset, or alarm may be manually reset by turning the unit off, then back on again.
Corrective Actions
Replace Main Microprocessor - Download data and replace main microprocessor. for complete Main Microprocessor Module replacement instructions refer to Section 5.5.2.