MITSUBISHI ELECTRIC Y-Series City Multi Air Conditioning Systems User Guide
- June 17, 2024
- Mitsubishi Electric
Table of Contents
CITY MULTI – R2 & Y – Series
**Extended Warranty Process***
*It is recommended to use the CITY MULTI Startup Process document in combination with this document.
Purpose
The CITY MULTI Extended Warranty Process is a guide to completing the
procedure for extended 10 year parts warranty.
Items that must be submitted to apply for extended warranty are: Diamond
System Builder file (as built)
System Information
This will allow us to understand how the system is configured at start up. At
least one hour of Maintenance tool (M-Tool) runtime in a specific operational
pattern, as shown in section IV of this document, for each system being
submitted.
Diamond System Builder (DSB)
DSB has fields that will allow input of items such as serial numbers,
installing contractors, design engineer and more.
Each field with a red asterisk () beside it is a required field and will need
appropriate information before being submitted.
The DSB file must be complete and truly represent how the system is installed
including correct piping lengths and port assignments (as built). Remember the
M-Tool file you submit shows the indoor model and addresses connected. To
ensure your application is not rejected, check that the M-Tool record and DSB
are in fact reflecting the same information.
When any system component is selected there are areas to enter refrigerant
piping length, unit height, unit address, connected refrigerant port (R2
systems only), and unit serial number.
There is a tab in the Project Properties Box marked “Extended Warranty”, all
of the fields in this box marked with the red asterisk () must be completed.
M-Tool run time and system information files are to be attached to the DSB in
the Project Properties Box under the “Extended Warranty” tab.
System Information
For Y – Series systems, once all addresses are correct, the information can be
saved.
For R2 – Series systems, verify all port assignments before saving system
information.
System information must be saved and submitted. Be sure all information is
correct.
M-Tool may take several minutes to finish its system mapping process before
data can be saved.
Once all addresses are correct the information can be saved.
Select File at the top left of the grid screen. Then click Save System
Information. 
The information will save and
store in the Offline Analyze section of Maintenance Tool.
Offline Analyze will be one of the options when you first open M-Tool on the
Select Monitor Mode Screen.
The steps for retrieving the information will be covered in section V.
One Hour Monitor Record
Record all indoor units in Test Run. (Refer to City Multi Startup Process
Document)
System must be in either H.Only or C.Only (all indoor units in the same mode)
for a minimum of one hour.
System must be in Ordinary Ctrl Mode (not Initial).
All indoor and outdoor units must stay operational (thermal on) during this
Test Run. Note that all controls should be “locked out” to prevent scheduled
or occupant changes that can alter the system operation during this time. When
using the thermostat interface (PAC-US444CN-1) or (PACUS445CN-1) it will not
be possible to force test mode, so setting the thermostat connected to either
of these interfaces needs to be set to its lowest set point for Cool or
highest set point for Heat is recommended. If you cannot keep all units in
thermal on for the recording period, please contact your technical Mitsubishi
support representative
When exiting the Monitor screen, you will be prompted to Confirm Data Save
You are also given the option to modify the Data Name, Area, Customer, System,
and add Comments.
When submitting data for the Extended Warranty Process ensure all files
submitted for a single system reflect the same name. This will avoid confusion
when information is received from large sites with multiple systems.
The saved data will store in the Offline Analyze section of
M-Tool.
Retrieving Saved Maintenance Tool Data
Saved data will store in the Offline Analyze section of M-Tool.
Exporting this data instructions are in the City Multi Equipment Start Up
Process under section 10
Submitting Extended Warranty Files
Attach System Information and Runtime files in the Project Properties /
Extended Warranty Tab. Use the Browse button to locate the files for
attachment. Once files have been attached to the As Built DSB file select “Submit” to send the project in for review.
If there is any missing information the DSB program will give a notification of errors to correct before the file can be properly submitted.
For additional information on the DSB submission process please view our Extended Warranty DSB Tech Tip on www.mylinkdrive.com under the Tech Tips section.
The following data must be submitted- Diamond System Builder file (As Built)
- Maintenance Tool System Information
- Maintenance Tool Run Time Data (Minimum 60 Minutes for each system)
The data MUST be submitted within 45 Days of Startup.
The Extended Warranty will NOT take effect until a warranty authorization
number has been issued.
If you have any questions regarding collection of data and submission you can
contact your distributor DSG or METUS area service manager.
August 2023
© 2018 Mitsubishi Electric Trane HVAC US LLC. All rights reserved.