Daikin VRV EMERION RXYQ-AATJA Service Manual page 214

Field Setting from Outdoor Unit
2.4.5 Heat Pump Lockout
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.
Heat pump
lockout temperature
Heat pump lockout
release differential
[2-16]: Auxiliary heater setting (Type I)
[2-37]: Auxiliary heater setting (Type II)
Type
Heat pump heating is
I —
always locked out
Lockout is controlled by
Mode 1
ABC terminals
Mode 2
(for a heater which
does not need
airflow)
Lockout is controlled by
II Mode 3
the outdoor air
temperature and
setpoint which is
Mode 4
configured by the field
setting [2-47] and
Mode 5
[2-65]
Mode 6
207
Item
Below this temperature, heat pump is
locked out.
When the outdoor air temperature is
recovered by this temperature, heat
pump is resumed.
Value
[2-16]
0 (default)
1
Value
[2-37]
0 (default)
1
2
3
4
5
6
Description
Field
setting
2-16: ON
2-37:
Mode 1
2-37:
Mode 2
2-37:
Mode 3
2-37:
Mode 4
2-37:
Mode 5
2-37:
Mode 6
Description
(–26.1°C)
Auxiliary heater
OFF
ON
Controlling mode
OFF
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Actions
Heating thermostat ON
Shorted
Auxiliary
between
heater
— ON
A-C
B-C
A-C ON
B-C
Same as 2-37: Mode 1 & A-C shorted
Same as 2-37: Mode 1 & B-C shorted
Same as 2-37: Mode 2 & A-C shorted
Same as 2-37: Mode 2 & B-C shorted
Part 5 Field Settings and Test Operation
SiUS342303E
Min Max Increments
–15°F
50°F
(10°C)
(default)
5°F (2.8°C)
10°F (5.6°C) (default)
15°F (8.3°C)
Heating thermostat OFF
Indoor Auxiliary
fan heater
ON (H/L) OFF
ON (H/L)
OFF
LL
5°F
(2.8°C)
Indoor
fan
LL
LL
OFF
LL
OFF