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Indoor Unit Only Operation (During Installation Work); Using Sd Memory Card - Mitsubishi Electric ecodan EHSC Series Installation Manual



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System Set Up

5.4 Indoor unit only operation (during installation work)

In the case when DHW or heating operation is required prior to connection of the outdoor unit; i.e. during installation work, an electric heater in indoor unit (*1) can be used.
*1 Model with electric heater only.
1. To start operation
● Check if the indoor unit power supply is OFF, and turn DIP switch 4-4 and 4-5 ON.
● Turn ON the indoor unit power supply.
2. To end operation *2
● Turn OFF the indoor unit power supply.
● Turn DIP switch 4-4 and 4-5 OFF.
*2 When the indoor unit only operation is ended, ensure to check over the settings after outdoor unit is connected.
Prolonged running of the this operation may affect the life of the electric heater.

5.5 Using SD memory card

The hydrobox is equipped with an SD memory card interface in FTC.
Using an SD memory card can simplify main remote controller settings and can store operating logs. *1
*1 To edit main remote controller settings or to check operating data, an Ecodan service tool (for use with PC) is required.
<Handling precautions>
(1) Use an SD memory card that complies with the SD standards. Check that the
SD memory card has a logo on it of those shown to the right.
(2) SD memory cards to the SD standards include SD, SDHC, miniSD, micro SD,
and microSDHC memory cards. The capacities are available up to 32 GB.
Choose that with a maximum allowable temperature of 55ºC.
(3) When the SD memory card is a miniSD, miniSDHC, microSD, or micro SDHC
memory card, use an SD memory card converter adapter.
(4) Before writing to the SD memory card, release the write-protect switch.
(5) Before inserting or ejecting an SD memory card, make sure to power off the
system. If an SD memory card is inserted or ejected with the system powered
on, the stored data could be corrupted or the SD memory card be damaged.
*An SD memory card is live for a short duration after the system is powered off.
Before insertion or ejection wait until the LED lamps on the FTC control board
are all off.
(6) The read and write operations have been verified using the following SD mem-
ory cards, however, these operations are not always guaranteed as the speci-
fications of these SD memory cards could change.
2GB PS8032 TSB 24nm MLC
2GB PS8035 TSB A19nm MLC
Before using a new SD memory card (including the card that comes with the
unit), always check that the SD memory card can be safely read and written to
by the FTC controller.
<How to check read and write operations>
a) Check for correct wiring of power supply to the system. For more
details, refer to section 4.4.
(Do not power on the system at this point.)
b) Insert an SD memory card.
c) Power on the system.
d) The LED4 lamp lights if the read and write operations are successfully
completed. If the LED4 lamp continues blinking or does not light, the SD
memory card cannot be read or written to by the FTC controller.
(7) Make sure to follow the instruction and the requirement of the SD memory
(8) Format the SD memory card if determined unreadable in step (6). This could
(9) FTC supports FAT file system but not NTFS file system.
(10) Mitsubishi Electric is not liable for any damages, in whole or in part, including
(11) Do not touch any electronic parts on the FTC control board when inserting or
Tested in
Mar. 2012
Oct. 2011
Oct. 2011
Jun. 2012
Jul. 2014
Oct. 2016
Oct. 2016
2 GB to 32 GB *2
Oct. 2016
Sep. 2017
SD speed classes
• The SD Logo is a trademark of SD-3C, LLC.
The miniSD logo is a trademark of SD-3C, LLC.
The microSD logo is a trademark of SD-3C, LLC.
*2 A 2-GB SD memory card stores up to 30 days of operation logs.
card's manufacturer.
make it readable.
Download an SD card formatter from the following site.
SD Association homepage:
failure of writing to an SD memory card, and corruption and loss of the saved
data, or the like. Back up saved data as necessary.
ejecting an SD memory card, or else the control board could fail.

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