NVD Checksum
system
Description
The Microprocessor Stepper Module cannot write information for storage, and the unit alarms only.
Activation Conditions
There is an error in the ability to write information to be stored in the Microprocessor Stepper Module memory.
Unit Behavior
Alarm only
Reset Conditions
Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check Microprocessor a. Check setpoint. Must be between -22 and +90°F (-30 and +32°C). b. Enter new setpoint. Must be between -22 and +90°F (-30 and +32°C). 2. Reset Microprocessor a. Place the START/RUN-OFF switch in the OFF position. Disconnect negative battery cable, remove F1 fuse, wait 20 seconds and reinstall. Then place the START/RUN-OFF back in the START/RUN position. The microprocessor powers up OK and the latest setpoint appears in the display. b. If this alarm remains active, download data and replace the Micro Stepper Module (MSM). Refer to Section 5.5.