15
Maintenance mode operation procedures
(1) Press the
button for three seconds to
activate the maintenance mode.
(2) Press the TEMP. buttons to set the refrigerant address.
(3) Select the data you want to display.
Compressor
information
Cumulative
operation time
ON/OFF
number
Operation
current
Display A
Display B
Display A
Heat exchanger
temperature
Comp discharge
temperature
Outdoor ambient
temperature
Display A
Outdoor unit
information
Indoor room
temperature
Heat exchanger
temperature
Filter operation
time
Display A
Indoor unit
information
* 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.
(5) The data is displayed in C.
(Airflow temperature display example)
Flashing
Waiting for
response
Approx.
10 sec.
147°F
* Repeat steps (2) to (5) to check another date.
(6) Press the
button for three seconds or press the
button to
deactivate the maintenance mode.
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.
Stable cooling
operation
Stable heating
operation
Stable operation
cancellation
Display A
Press the
button to select the operation mode.
Press the
button.
Waiting for stable
operation
Display D
Stable
operation
10-20 min.
* You can check the data using steps (3) to (5) of the maintenance mode opera-
tion procedures while waiting for the stable operation.
8. Easy maintenance function [This function only for A-control]
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.
Display example (Comp discharge temperature 147°F)
Display C
BG79U874H01_en 05.11.30, 9:2415
