Model # Error
system
Description
The stored model number in the Microprocessor Stepper Module memory is wrong, and the unit shuts down and alarms.
Activation Conditions
There is an error in the Model Number that is stored in the Microprocessor Stepper Module memory.
Unit Behavior
Shutdown and alarm.
Reset Conditions
Auto reset only when a valid Model number is entered.
Corrective Actions
1. Check Model Number a. Check Model Number in microprocessor. b. Enter correct Model Number. Check Model Number on Nameplate. Select the correct model number in the “MODEL NUMBER” Configuration. If correct model number is not found, install (or have Carrier Transicold dealer install) latest software revision. 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. Check for valid model number in Unit Data. Valid number is present. Alarm is cleared. c. Valid model number can not be entered and alarm remains active. Download data and replace the Micro Stepper Module (MSM). Refer to Section 5.5.