Daikin VRV RXYQ72-384XAYCA, Service Manual

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SiUS342004EB Field Settings for Outdoor Unit
Part 5 Field Settings and Test Operation 194
2.5.5 Heat Pump Lockout
New control logic to provide more application options for cold climates.
Outside temperature can now be measured directly from the outdoor unit coil sensor.
This field setting can switch automatically to emergency heat if there is a system fault.
Item Description Min Max Increments
Heat pump
lockout
temperature
Below this temperature, heat pump is
locked out.
–15°F
(–26.1°C)
(default)
50°F
(10°C)
5°F
(2.8°C)
Heat pump
lockout release
differential
When the outdoor air temperature is
recovered by this temperature, heat
pump is resumed.
5°F, 10°F (default), 15°F
(2.8°C, 5.6°C (default), 8.3°C)
[2-16]: Auxiliary heater setting (Type I)
Value
[2-16]
Auxiliary heater
0 (default) OFF
1 ON
[2-37]: Auxiliary heater setting (Type II)
Value
[2-37]
Controlling mode
0 (default) OFF
1 Mode 1
2 Mode 2
3 Mode 3
4 Mode 4
5 Mode 5
6 Mode 6
Type Description
Actions
Field
setting
Shorted
between
Heating thermostat
ON
Heating thermostat
OFF
Auxiliary
heater
Indoor fan
Auxiliary
heater
Indoor fan
l —
Heat pump heating is
always locked out
2-16: ON — ON ON (H/L) OFF LL
ll
Mode 1
Lockout is controlled by
ABC terminals
2-37:
Mode 1
A-C
ON
ON (H/L)
OFF
LL
B-C OFF
Mode 2
(for a heater which
does not need airflow)
2-37:
Mode 2
A-C
LL
LL
B-C OFF
Mode 3
Lockout is controlled by
the outdoor air
temperature and
setpoint which is
configured by the field
setting [2-78] and [2-79]
2-37:
Mode 3
Same as 2-37: Mode 1, A-C shorted
Mode 4
2-37:
Mode 4
Same as 2-37: Mode 1, B-C shorted
Mode 5
2-37:
Mode 5
Same as 2-37: Mode 2, A-C shorted
Mode 6
2-37:
Mode 6
Same as 2-37: Mode 2, B-C shorted