Table of Contents
Advertisement
11
Specifi cations
Model
Cooling
MMC-UP0151HP-E
*
MMC-UP0181HP-E
*
MMC-UP0241HP-E
*
MMC-UP0271HP-E
*
MMC-UP0361HP-E
*
MMC-UP0481HP-E
*
MMC-UP0561HP-E
*
* Under 70 dBA
12
Notice code
Notice code is a function only in TC2U-Link communication.
When the outdoor or indoor unit detects its conditions requiring caution or maintenance, this function notices you
to check your units with the spanner mark (Notice code mark) on the wired remote controller or central controller
display.
Even while the notice code mark is displayed, the air conditioner can operate normally.
A maximum of 5 notice codes can be issued simultaneously in one system (line).
How to check Notice code No.
1
Stop the operation of the air conditioner and push the Menu button and OFF timer button at the same time
for 10 seconds or more.
2
The unit number of the indoor unit is displayed at the bottom left of the screen.
Change it with the [ ] [ ] setting button and push the OFF timer button to confirm.
3
The history number is displayed in the center of the screen, and the Notice code No. is displayed in the
lower left.
[ ] [ ] You can switch the history with the setting button (a maximum of 5 notice codes).
4
Push the ON/OFF button to return to the operation stop screen.
Notice code list
Notice code
Item
No.
203
Flow Selector unit battery dead
204
Leak detector life advance display
43-EN
Sound power level (dBA)
Heating
*
*
*
*
*
*
*
Notice code mark
Content
The battery kit connected to the Flow Selector unit has reached the
end of its life.
The leak detector will soon reach the end of its life.
13
Appendix
Work instructions
Weight (kg)
The existing R22 and R410A piping can be reused for
inverter R32 product installations.
24
24
WARNING
30
Confirming the existence of scratches or dents on
30
the existing pipes and confirming the reliability of
39
the pipe strength are conventionally referred to the
39
local site.
If the specified conditions can be cleared, it is
39
possible to update existing R22 and R410A pipes
to those for R32 models.
Basic conditions needed to reuse existing
pipes
Check and observe the presence of three conditions in
the refrigerant piping works.
1. Dry (There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There are no refrigerant leaks.)
Restrictions for use of existing pipes
In the following cases, the existing pipes should
not be reused as they are. Clean the existing pipes
or exchange them with new pipes.
1. When a scratch or dent is heavy, be sure to use new
pipes for the refrigerant piping works.
2. When the existing pipe thickness is thinner than the
specified "Pipe diameter and thickness," be sure to
use new pipes for the refrigerant piping works.
The operating pressure of refrigerant is high.
If there is a scratch or dent on the pipe or a
thinner pipe is used, the pressure strength may be
inadequate, which may cause the pipe to break in
the worst case.
* Pipe diameter and thickness (mm)
Pipe outer diameter
R32, R410A
Thickness
3. When the outdoor unit was left with the pipes
disconnected, or the gas leaked from the pipes and
the pipes were not repaired and refilled.
There is the possibility of rain water or air,
including moisture, entering the pipe.
4. When refrigerant cannot be recovered using a
refrigerant recovery unit.
There is the possibility that a large quantity of dirty
oil or moisture remains inside the pipes.
– 22 –
5. When a commercially available dryer is attached to
the existing pipes.
There is the possibility that copper green rust has
been generated.
6. When the existing air conditioner is removed after
refrigerant has been recovered.
Check if the oil is judged to be clearly different from
normal oil.
The refrigerator oil is copper rust green in color:
There is the possibility that moisture has mixed
with the oil and rust has been generated inside the
pipe.
There is discolored oil, a large quantity of residue,
or a bad smell.
A large quantity of shiny metal dust or other wear
residue can be seen in the refrigerant oil.
7. When the air conditioner has a history of the
compressor failing and being replaced.
When discolored oil, a large quantity of residue,
shiny metal dust, or other wear residue or mixture
of foreign matter is observed, trouble will occur.
8. When temporary installation and removal of the
air conditioner are repeated such as when leased etc.
9. If the type of refrigerator oil of the existing air
conditioner is other than the following oil (Mineral oil),
Suniso, Freol-S, MS (Synthetic oil), alkyl benzene
(HAB, Barrel-freeze), ester series, PVE only of ether
series.
The winding-insulation of the compressor may
deteriorate.
NOTE
The above descriptions are results have been
confirmed by our company and represent our views on
our air conditioners, but do not guarantee the use of
the existing pipes of air conditioners that have adopted
R32, R410A in other companies
Curing of pipes
Ø6.4
Ø9.5 Ø12.7 Ø15.9
When removing and opening the indoor or outdoor unit
0.8
0.8
0.8
1.0
for a long time, cure the pipes as follows:
R22
Otherwise rust may be generated when moisture or
foreign matter due to condensation enters the pipes.
The rust cannot be removed by cleaning, and new
pipes are necessary.
Placement
location
Outdoors
Indoors
Term
Curing manner
1 month or more
Pinching
Less than 1 month
Pinching or taping
Every time
44-EN
Advertisement
Table of Contents
