Lennox Core Unit Controller Setup Manual page 24

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9.3.4. Firmware Update
The mobile application will update the firmware of the unitary controller.
The mobile application will push any supported firmware image version to the unitary controller.
Options are Automatic Cloud Update or upgrade from USB.
9.3.4.1
Updating Firmware
The mobile application shall pull the latest device supported firmware version from the cloud. The screen will list current
firmware version, cloud firmware update set to on or off and upgrade from USB.
a. Search for Updates: The user has the ability to "search for updates" for new RTU firmware. If no updates are found, it
will indicate so.
b. File List Available for Download: The user will be informed of the files found after query, and be allowed to start the
firmware download.
c. Downloading Image Status: The user will be informed that the app is downloading the firmware from the cloud.
d. W4 USb Drive as Source of Controller Firmware Image: The mobile application will load a unitary controller firmware
image from a W4 USB drive.
e. Version Selectable: The mobile application will allow the user to choose which version of the firmware in the USB drive
shall be used.
f. Confirmation Dialog: The mobile application will present a confirmation dialog to the user before updating the CORE
Unit Controller.
g. Upgrade Time: The mobile application should be able to upgrade the unitary controller firmware is approximately 60
minutes using USB. Cloud updates could be longer than 60 minutes.
h. Upgrade with HVAC Service: The mobile application will upgrade the unitary controller firmware without loss of HVAC
service (excluding system reboot following upgrade).
i. Installing Firmware Upgrade Status: The mobile application shall update the firmware upgrade status every 5% of
progress.
9.3.4.2
Automatic Update
a. The user has the option to set automatic cloud updates to "On" for the RTU.
b. Firmware Install Completion Status: The user will be informed of the firmware update completion status from the RTU.
c. Options:
Upgrade completed successfully
FW hash value wrong
Programming of flash on equipment failed
Power cycle or other reset occurred during upgrade
M4 comm failure during upgrade
M4 comm failure on restart following upgrade
M4 FW version did not change following upgrade
M4 FW update aborted due to connection of technician device to bus
ADVANCED
ADVANCED
CONTROL
CONTROL
Figure 26. Advanced Control Menu Structure
REMOTE RESET
RESET (REBOOT)
CLEAR DELAYS
OK
CONTROLLER LOCKOUT
LOCKED
TOGGLE ON OR OFF
24

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