Easy Maintenance Function (For Wired Remote Controller Only); Gas Charge - Mitsubishi Electric Mr.SLIM PEAD-A24AA4 Installation Manual

10.Easy maintenance function (For wired remote controller only)

Display example (Comp discharge temperature 147°F)
D
A
PAR-21MAA
(1) Press the button for 3 seconds to
TEST
activate the maintenance mode.
(2) Press the TEMP. buttons to set the refrigerant address.
(3) Select the data you want to display.
Cumulative
Compressor
operation time
information
COMP ON
Display A
MENU
x10 HOURS
Heat exchanger
Outdoor unit
temperature
information
OUTDOOR UNIT
Display A
H•EXC. TEMP
ON/OFF
Indoor room
Indoor unit
temperature
information
INDOOR UNIT
Display
A
INLET TEMP
* The filter operation time displayed is the number of hours the filter has been
used since the filter reset was performed.
(4) Press the button.
FILTER
(5) The data is displayed in .
C
Display
* Repeat steps (2) to (5) to check another data.
(6) Press the button for 3 seconds or press the
TEST
deactivate the maintenance mode.
11.Maintenance

11.1. Gas charge

[Fig. 11-1] (P.7)
A Indoor unit
B Union
C Liquid pipe
D Gas pipe
E Stop valve
F Outdoor unit
G Refrigerant gas cylinder operating valve
H Refrigerant gas cylinder for R410A with siphon
I Refrigerant (liquid)
J Electronic scale for refrigerant charging
K Charge hose (for R410A)
L Gauge manifold valve (for R410A)
M Service port
1. Connect gas cylinder to the service port of stop valve (3-way).
2. Execute air purge of the pipe (or hose) coming from refrigerant gas cylinder.
3. Replenish specified amount of refrigerant, while running the air conditioner
for cooling.
C
B
Maintenance mode operation procedures
MAINTENANCE
Display A
Display B
Operation
ON/OFF
current
number
COMP ON COMP ON
x100 TIMES
CURRENT (A)
Outdoor ambient
Comp discharge
temperature
temperature
OUTDOOR UNIT OUTDOOR UNIT
OUTLET TEMP OUTDOOR TEMP
Filter operation
Heat exchanger
time
temperature
INDOOR UNIT
INDOOR UNIT
H•EXC. TEMP
FILTER USE H
(Airflow temperature display example)
Blinking
C
Approx.
W aiting for
10 sec.
response
button to
ON/OFF
By using the maintenance mode, you can display many types of maintenance data
on the wired remote controller such as the heat exchanger temperature and com-
pressor current consumption for the indoor and outdoor units.
This function can be used whether the air conditioner is operating or not.
During air conditioner operation, data can be checked during either normal opera-
tion or maintenance mode stable operation.
* This function cannot be used during the test run.
* The availability of this function depends on the connecting outdoor unit. Refer to the
brochures.
Stable operation
Using the maintenance mode, the operation frequency can be fixed and the op-
eration can be stabilized. If the air conditioner is stopped, use the following pro-
cedure to start this operation.
Press the button to select the operation mode.
MODE
Stable cooling
operation
COOL
Display A
STABLE MODE
Press the button.
FILTER
Waiting for
stable operation
Display D
* You can check the data using steps (3) to (5) of the maintenance mode opera-
tion procedures while waiting for the stable operation.
Note:
In case of adding refrigerant, comply with the quantity specified for the refrigerating
cycle.
Caution:
• Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installa-
tion, reinstallation, or repairs to the refrigerant circuit.
• For additional charging, charge the refrigerant from liquid phase of the gas
cylinder.
If the refrigerant is charged from the gas phase, composition change may
occur in the refrigerant inside the cylinder and the outdoor unit. In this case,
ability of the refrigerating cycle decreases or normal operation can be impos-
sible. However, charging the liquid refrigerant all at once may cause the com-
pressor to be locked. Thus, charge the refrigerant slowly.
To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm
water (under 40 °C [104 °F]) during cold season. But never use naked fire or steam.
Stable operation
Stable heating
cancellation
operation
HEAT
STABLE MODE
STABLE MODE
CANCEL
Stable
operation
10-20 min.
17