35
3P477778-7G
English
15 .2 .3 . Auxiliary heat control
To improve efficiency the aux heat can be lockout based on outdoor
temperature.
Item
Description
Min
Max
Increments
AUX Heater
Allowable Temp
Below this tempera-
ture, AUX heater can
be energized based
on the indoor tempera-
ture condition.
0F
65F
(35F
default)
5F
AUX Heater
Allowable temp
Release
differential
When the outdoor
temp recovered by
this temp, AUX heater
cannot be allowed.
5F, 10F (default), 15F
[2-97]= Aux heater max allowable temp
AUX Heater is allowed to energize when the ambient temp is
smaller than the AUX Heater Max Allowable Temp.
AUX Heater Max
Allowable Temp
Fahrenheit
Celsius
0
0
− 17.7
1
5
− 15
2
10
− 12.2
3
15
− 9.4
4
20
− 6.6
5
25
− 3.8
6
30
− 1.1
7
35 (default)
1.6 (default)
8
40
4.4
9
45
7.2
10
50
10
11
55
12.7
12
60
15.5
13
65
18.3
14
AUX Heater always NOT allowed
15
AUX Heater always allowed
[2-98]= Aux heater max allowable temp release differential
AUX Heater is not allowed to energize when the outdoor
ambient temp is recovered by differential (below) above the
AUX Heater Max Allowable Temp.
AUX Heater Max Allowable
temp Release differential
Fahrenheit
Celsius
0
5
2.8°C
1
10
(default)
5.6°C
(default)
2
15
8.3°C
15 .2 .4 . Heat pump lockout
•
New control logic to provide more application options for cold
climates.
•
Outside temperature can now be measured directly from the out-
door unit coil sensor.
•
VRV IV HR, VRV-S and VRV Cold Climate can also be programed to
automatically switch to emergency heat is there is a system fault.
Item
Description
Min
Max Increments
Heat Pump
Lockout Temp
Below this tempera-
ture, heat pump is
locked out.
− 15F
(default)
50F
5F
Heat Pump
Lockout Release
differential
When the outdoor
temp is recovered by
this temp, heat pump
is resumed.
5F, 10F (default), 15F
[2-16]= Aux heater setting (Type
I
)
Value [2-16]
Aux heater
0
OFF
1
ON
[2-37]= Aux heater setting (Type
II
)
Value [2-37]
Controlling mode
1
Mode 1
2
Mode 2
3
Mode 3
4
Mode 4
5
Mode 5
6
Mode 6
01_EN_3P477778-7G.indb 35
1/15/2019 10:58:30
