Daikin VRV EMERION REYQ-AATJA Service Manual page 274

Field Setting from Outdoor Unit
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.
Heat pump
lockout
temperature
Heat pump
lockout release
differential
[2-16]:
[2-37]:
Type
Heat pump heating is
I —
always locked out
Lockout is controlled
Mode 1
by ABC terminals
Mode 2
(for a heater
which does not
need airflow)
Lockout is controlled
II Mode 3
by the outdoor air
temperature and
Mode 4 setpoint which is
configured by the field
setting [2-78] and
Mode 5
[2-79]
Mode 6
267
Item Description
Below this temperature, heat pump is
locked out.
When the outdoor air temperature is
recovered by this temperature, heat
pump is resumed.
Auxiliary heater setting (Type I)
Value
[2-16]
0 (default)
1
Auxiliary heater setting (Type II)
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
Min
–15°F
(–26.1°C)
(default)
Auxiliary heater
OFF
ON
Controlling mode
OFF
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Actions
Heating thermostat ON
Shorted
between
Auxiliary Indoor
heater
— ON ON (H/L)
A-C
ON (H/L)
B-C
ON
A-C
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
SiUS372201EB
Max Increments
50°F
(10°C) (2.8°C)
5°F, 10°F (default), 15°F
(2.8°C, 5.6°C (default), 8.3°C)
Heating thermostat
OFF
Auxiliary Indoor
fan heater fan
OFF
OFF
OFF
LL
OFF
5°F
LL
LL
LL