System Controll; Easy Maintenance Function - Mitsubishi Electric PEAD-RP-EA Installation Manual

9. Test run
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer)
LED 2 (power for remote controller)
LED 3 (communication between indoor and outdoor units)

10. System controll

Refer to the outdoor unit installation manual.

11. Easy maintenance function

Display example (Comp discharge temperature 64
A
D
Maintenance mode operation procedures
(1) Press the button for three 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
information operation time
Display A
COMP ON
MENU
x10 HOURS
Heat exchanger
Outdoor unit
temperature
information
Display A OUTDOOR UNIT
H·EXC. TEMP
ON/OFF
Indoor room
Indoor unit infor-
temperature
mation
Display A INDOOR UNIT
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 C
* Repeat steps (2) to (5) to check another date.
(6) Press the button for three seconds or press the
TEST
deactivate the maintenance mode.
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the remote controller. This LED lights only in the case of the
indoor unit which is connected to the outdoor unit refrigerant address "0".
Indicates state of communication between the indoor and outdoor units. Make sure that this LED is
always blinking.
°
C)
C B
MAINTENANCE
Display A
Display B
Operation
ON/OFF
number current
COMP ON
COMP ON
x100 TIMES CURRENT (A)
Outdoor ambient
Comp discharge
temperature
temperature
OUTDOOR UNIT
OUTDOOR UNIT
OUTLET TEMP
OUTDOOR TEMP
Heat exchanger Filter operation
time
temperature
INDOOR UNIT INDOOR UNIT
H·EXC. TEMP FILTER USE H
(Airflow temperature display example)
Flashing
Approx.
64 °C
Waiting for
10 sec.
response
button to
ON/OFF
By using the maintenance mode, you can display many types of maintenance data
on the remote controller such as the heat exchanger temperature and compressor
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 operation
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 proce-
dure to start this operation.
Press the button to select the operation mode.
MODE
Stable cooling
operation
Display A
COOL
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.
Stable operation
Stable heating
cancellation
operation
HEAT
STABLE MODE
STABLE MODE CANCEL
Stable
operation
10-20 min.
13