Catalogue

UV-PRC003-EN 65
Controls
ECM Engine Controller
The Electronically Commutated Motor (ECM) engine controls and reports the performance of up
to two Trane Brushless DC (BLDC) motors.
• The engine also coordinates the operation of the fan in response to electric heat behavior and
electric behavior in response to hydronic heat behavior.
• The engine incorporates a user interface that allows adjustment of certain unit parameters and
provides constant feedback on motor operation.
• The engine integrates service and troubleshooting tools.
• The engine integrates a versatile configurable auxiliary temperature sensor.
• The engine incorporates various safety and lockout features, such as maintaining proper fan
speeds if electric heat is called for.
Status Display
The ECM engine board contains a four-digit, seven-segment display that is used to present
information in a format close to real-world language, while having a small-form factor. Most
characters are immediately recognizable; however, please consult Table 49 and Table 50 for the
graphical representation of each alphanumeric character.
Figure 20. ECM engine controller
Figure 21. Status display
Table 49. Screen representation of alphabetical characters
ABCDEFGHI JKLMNOPQRSTUVWXYZ

Table 50. Screen representation of numeric characters
1234567890

ECM Engine Controller
UV-PRC003-EN.book Page 65 Tuesday, June 4, 2013 8:59 PM