Thermo King 098203, Maintenance Manual

Page: 125 / 264

Main Menu
123
1. Enter ‘Configuration’ menu.
2. Use F2 or F3 key to scroll to ‘Auto Config’ menu line.
3. Press F4. The password line appears.
4. Press the following keys in this order:
• F2, then A, then F4, then EXIT
5. Use F2 or F3 key to scroll to ON.
6. Press and hold F4 key until entry is complete.
7. Press ESC key to begin the ‘Auto Config’ sequence.
Once the ‘Auto Config’ is complete, and the AFAM+ system has been found and configured into
controller memory, enter the desired settings.
If the damper motor or the gas analyzer is not found during the ‘Auto Config’, use the diagram below
(and the unit Schematic and Wiring Diagrams) to verify the connections, supply voltages and
communication wring to the two components. Also verify that the AFAM+ Expansion Module is firmly
attached to the back of the controller.
Figure 102: AFAM+ Schematic Diagram
Alarm Codes and Actions / Data Menu Display
There is one (1) PTI alarm that could be generated on a unit equipped / utilizing an O2 sensor.
Alarms Possible Cause Corrective Action(s)
Code 122
O2 Sensor Calibration Error (if
equipped) (PTI Only) 1. Stale atmosphere / Filter or inlet /
outlet tubes restricted (SEE NOTE
BELOW)
2. O2 sensor reading < 17% or >
25%
1. Open evaporator access door or
fully open vent door and allow unit
to operate on high speed fan for
20 to 30 minutes to purge any old,
stale air trapped in the analyzer
module before performing PTI
2. If O2 reading is still out of
calibration range after purge
procedure noted above is
performed, replace analyzer