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English
Instal
lation Pr
oc
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Step 13 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
Temperature
Cool
Approximately 14.4 ℉ (-10 ℃)
Heat
Approximately 21.6 ℉ (-6 ℃)
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.
‐
Cool mode try-run: Push the [K1] button twice.
‐
Heat mode try-run: Push the [K1] button three times.
‐
Auto mode try-run: Push the [K1] button six times.
Automatically select mode
according to outdoor temperature.
Step 14 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.
You can set each mode with Keys on the Main PCB in the
outdoor unit.
Set mode
SEG1
SEG2
SEG3
SEG4
Cooling and Heating
0
0
0
0
Only Cooling
0
1
Only Heating
0
2
• Default value: Cooling and Heating mode
DB68-12535A-00_IM_23Y FJM Outdoor_AA_EN_.indd 31
DB68-12535A-00_IM_23Y FJM Outdoor_AA_EN_.indd 31
2023-09-22 오후 1:46:59
2023-09-22 오후 1:46:59
