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Step 14 Cool and Heat modes
operation test
After installing the outdoor and indoor units, test the
Cool and Heat modes.
• When you test the Cool mode, set the set
temperature of the indoor unit to the lowest one.
And when you test the Heat mode, set the set
temperature of the indoor unit to the highest one.
• Check if each indoor unit operates normally and
then also check if all indoor units operate normally
together.
Check both of the Cool and Heat modes.
• About 20 minutes after the air conditioner is started,
check the temperature difference between the air
inlet and outlet of the indoor unit. If the temperature
difference is larger than the value given in the
following table, the operation is normal.
Mode
Cool
Heat
CAUTION
• If the outdoor unit is turned off and then immediately
turned on again, the compressor does not operate for
about 3 minutes.
• During the Cool mode, frost may temporarily develop
on valves and other parts.
NOTE
• You can also test the Cool or Heat Try run using K1
button.
Step 15 Optional: Setting to Cool or
Heat only mode
This function enables the indoor units connected to the
outdoor unit to operate in a specific mode.
Cooling and
Temperature
AJ***RCJ*EG
Set the
indoor
Switch
mode
Heating
Only
Cooling
Only
Heating
Switch setting
3
4
OFF
OFF
ON
ON
ON
OFF
OFF
ON
English
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