Trane TAMXB0A24V21DB Installation, Operation And Maintenance Manual page 65

F F r r e e e e z z e e P P r r o o t t e e c c t t i i o o n n
1. The AHC control has the ability to sense when the
indoor coil is beginning to ice. If this event should
occur, the AHC will send a message to de-energize
the OD unit.
2. The indoor blower motor will continue running to
aid in defrosting the coil.
3. After 5 minutes, the OD will be turned back on.
18-GJ89D1-1F-EN
T T A A M M X X has the ability to use the Diagnostics Mobile
App to access internal features. The Diagnostics Mobile
App connects to the unit through a Bluetooth Low
Energy (BLE) connection using an onboard radio which
talks to a app that is loaded to the technician's smart
phone or tablet device.
The Diagnostics Mobile App can be found in the device
app store when searching Trane Diagnostic or
American Standard Diagnostics or by scanning a QR
code that is located on the inside of the blower door.
2 2 4 4 v v o o l l t t m m o o d d e e : :
Diagnostics Mobile App is available to read fault codes
and to monitor live internal operation. Diagnostics
Mobile App is necessary to configure accessories and
external switches. If you choose to configure blower
delays or to change CFM/ton etc., this will need done
from the Diagnostics Mobile App.
Replacement Air Handler Control boards are generic
and need to be configured. The Diagnostics Mobile
App is the easiest way to accomplish this by simply
choosing the model number of your unit in the
configuration menu. The unit will then run with the
correct blower speeds and EEV control etc. As a
backup- there is a button press method for
programming the unit size. This information is included
in this units Service Facts and in the Installation Guide
for the replacement Air Handler Control board. For 2
stage outdoor units, 1st stage airflow will be 70% of
maximum airflow. Unit comes defaulted for HP
operations and can be changed to AC by moving
dipswitch #1 from OFF to ON. All other adjustments/
configurations need completed using the configuration
menu in the Diagnostics Mobile App.
The BLE Radio will be on continuously until 24 hours
after the user setup wizard has been completed inside
the Diagnostics Mobile App. To turn the radio back on,
simply push the S1 switch 1 time and is located on the
bottom of the AHC. It will stay on for 24 hours and then
automatically turn off.
L L i i n n k k C C o o m m m m u u n n i i c c a a t t i i n n g g M M o o d d e e : :
The BLE radio on the Air Handler Control board is 1 of 3
radios in the complete system and is used as an access
point for the Diagnostics Mobile App. The Diagnostics
Mobile App will continually monitor which radio
provides the best signal strength and automatically
switch to that stronger signal live. In communicating
mode, the Diagnostics Mobile App Monitor Menu will
show complete system operation. Diagnostics Mobile
App can be used to configure accessories and external
switches as well as run test modes, read active and
historical faults and configure several unit parameters.
S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n
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