Mitsubishi Electric PUHY-HP72 Service Handbook page 284

[9-2 Operation Data Collection and Storage Functions ]
[Method 2] Storing data on a USB memory stick with the main power to the outdoor unit turned on
<Starting up the unit in the data storage mode>
Stop the operation of all indoor units.
*Although operation data can be collected without stopping all indoor units, doing so may be detected as a communication
error.
Connect a USB memory stick to the USB port (CNUSB) on the control board.
Press and hold SWP3 (ENTER) for approximately 10 seconds until [USB] appears on the monitoring LED 301.
When [USB] has appeared on the LED, lift the finger off SWP3 (ENTER).
The unit is now in the data storage mode.
<Storing data>
Press SWP3 (ENTER). If the data storage process has properly started, the progress (0-99) will be shown on the monitoring
LED 301.
[End] on the LED indicates successful completion of the data storage process.
*It takes approximately five minutes for the data storage process to be completed.
<Ending the data storage mode>
When done storing data, disconnect the USB memory stick from the control board.
Press and hold SWP3 (ENTER) for approximately 10 seconds until [End] disappears from the monitoring LED 301.
Restart the indoor and outdoor units that were stopped to perform data storage.
If the data collection process needs to be started, check the operation data collection status by following the procedures ex-
plained in [9-2-3 Collecting Operation Data]and making the necessary settings.
(3) Confirmation of stored file
Confirm that the operation data is stored in the USB memory stick. Insert the USB memory stick into a computer, and check
the contents in the memory stick.
When there are the following files in the USB memory stick
Check that there is the following file in the memory stick.
File: MNTXXX.MT
"XXX" represents serial numbers from "000" to "100."
HWE18240_GB
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