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● Reduces maintenance work drastically.
● Enables you to check operation data of the indoor and outdoor units by remote controller.
Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even
for inverter models.
11-1.MAINTENANCE MODE OPERATION METHOD
* If you are going to use the "11-2.GUIDE FOR OPERATION CONDITION", set the airflow to "High" before activating
maintenance mode.
● Switching to maintenance mode
Maintenance mode can be activated either when the air conditioner is operated or stopped.
It cannot be activated during test run.
w Maintenance information can be viewed even if the air conditioner is stopped.
D
A C B
Operation mode
Compressor information
Outdoor unit information
Indoor unit information
Confirm
Activate/cancel maintenance mode
■ Remote controller button information
(1) Press the
TEST
button for 3 seconds to switch to maintenance mode.
[Display
A
]
MAINTENANCE
If stable operation is unnecessary or if you want to check the data with the air conditioner stopped, skip to step (4).
● Fixed Hz operation
The operating frequency can be fixed to stabilize operation of inverter model.
If the air conditioner is currently stopped, start it by this operation.
(2) Press the
MODE
button to select the desired operation mode.
[Display
A
]
(3) Press the
FILTER
( ) button to check the setting.
[Display
D
] Waiting for stabilization
HEAT
STABLE MODE
STABLE MODE
CANCEL
COOL
STABLE MODE
Stable cooling
operation
Stable heating
operation
Stable operation
cancellation
Stabilized
After 10 to 20 minutes
Remove the
service panel.
Measure
the intake air
temperature.
Measure the discharge
temperature.
Measure the outside air
temperature
●Indoor unit ●
●Outdoor unit ●
Smooth Mainte-
nance Function
● Conventional inspection work
Easy maintenance information (unit)
Compressor Outdoor unit Indoor unit
Accumulated operating
Heat exchanger
7
Intake air
time
(o10 hours) temperature (˚F) temperature (˚F)
Number of ON/OFF Discharge
8
4
5
1
2
963
Heat exchanger
times (o10 times) temperature (˚F) temperature (˚F)
Operating Outside air Filter operating
current (A) temperature (˚F) time* (Hours)
* The filter operating time is the time that has elapsed since the filter was reset.
Discharge temperature 147˚F
11
EASY MAINTENANCE FUNCTION
OCH429--3.qxp 07.11.20 9:19 AM Page 85