Setpoint Error
system
Description
The stored setpoint is in error; the unit shuts down and alarms.
Activation Conditions
There is an error in the setpoint that is stored in the main microprocessor memory.
Unit Behavior
Shutdown and alarm
Reset Conditions
Auto reset when a valid setpoint is entered, or alarm may be manually reset by turning the unit off, then back on again.
Corrective Actions
1. Check Setpoint a. Check setpoint setting. Must be between 65 and 85°F (18° and 29°C) b. Enter new setpoint. 2. Reset Microprocessor a. Turn APU off at the AI. Disconnect negative battery cable, wait 20 seconds, and reinstall. Turn APU back on from the Aspen Interface. The CCM powers up OK and valid setpoint appears on the Aspen Interface. b. Valid setpoint cannot be entered and alarm 00231 remains active. Download data and replace the Climate Control Module (CCM). Refer to Section 5.5.