Field Settings from Outdoor Unit SiUS281811EA
186 Part 5 Field Settings and Test Operation
Heat pump lockout temperature
Heat pump would be locked out when the outdoor air temperature is smaller than the heat pump
lockout temperature. This setting is only effective when heat pump lockout mode has been set.
Heat pump lockout release differential
Heat pump would be resumed when the outdoor air temperature is recovered by differential above
the heat pump lockout temperature.
Automatic lockout
When heat pump lockout mode has been set, the auto backup function will automatically be set.
This will allow the auxiliary or secondary heat source to be automatically energized in the event of a
system failure related to outdoor units.
No.
Setting item display
Setting condition display
Setting item
MODE
H1P
TEST
H2P
C/H selection
Low
noise
H6P
Demand
H7P
IND
H3P
Master
H4P
Slave
H5P
∗
Factory setting
57
Heat pump
lockout
temperature
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–26.1°C (–15°F)
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–23.3°C (–10°F)
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–20.5°C (–5°F)
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–17.7°C (0°F)
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–15°C (5°F)
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–12.2°C (10°F)
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–9.4°C (15°F)
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–6.6°C (20°F)
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–3.8°C (25°F)
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–1.1°C (30°F)
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1.6°C (35°F)
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4.4°C (40°F)
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7.2°C (45°F)
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10°C (50°F)
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Forced heat
pump lockout
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No.
Setting item display
Setting condition display
Setting item
MODE
H1P
TEST
H2P
C/H selection
Low
noise
H6P
Demand
H7P
IND
H3P
Master
H4P
Slave
H5P
∗
Factory setting
47
Heat pump
lockout
release
differential
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2.8°C (5°F)
khhhhhh
5.6°C (10°F)
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8.3°C (15°F)
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