Easy Maintenance Function - Mitsubishi Electric PUZ-HA30NHA4 Service Manual

Mitsubishi electric split-type, heat pump air conditioners service manual
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EASY MAINTENANCE FUNCTION

11
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.
Smooth Mainte-
nance Function
Easy maintenance information (unit)
Compressor
Outdoor unit
Accumulated operating
Heat exchanger
time ( 10 hours)
temperature (°F)
Number of ON/OFF
Discharge
times ( 10 times)
temperature (°F)
Operating
Outside air
current (A)
temperature (°F)
* The filter operating time is the time that has elapsed since the filter was reset.
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.
Maintenance information can be viewed even if the air conditioner is stopped.
(1) Press the
button for 3 seconds to switch to maintenance mode.
TEST
[Display
]
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
button to select the desired operation mode.
MODE
Stable cooling
[Display
]
operation
COOL
STABLE MODE
(3) Press the
FILTER
( ) button to confirm the setting.
[Display
] Waiting for stabilization
Discharge temperature 147 °F
Indoor unit
Measure the discharge
temperature.
Intake air
temperature (°F)
Heat exchanger
temperature (°F)
Filter operating
time* (Hours)
Remote controller button information
Compressor information Outdoor unit information Indoor unit information
Operation mode
Stable heating
Stable operation
operation
cancellation
HEAT
STABLE MODE
STABLE MODE
CANCEL
Conventional inspection work
Outdoor unit
Measure
Remove the
the intake air
service panel.
temperature.
Measure the outside air
temperature
Confirm
Activate/cancel maintenance mode
After 10 to 20 minutes
70
Indoor unit
Stabilized

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