Bard WALL MOUNTED PACKAGE HEAT PUMPS WH602 User Manual
Page 15
Manual 2100-399
Page 13
IMPORTANT NOTE:
Both thermostat and subbase combinations shown above in Groups A and B
incorporate the following features: Man-Auto fan switch, Off-Heat-Cool-Em.
Heat switch, and two (2) indicator lamps – one for emergency heat and one for
compressor malfunction.
(1)
No automatic changeover position -- must be manually placed in heat or cool.
Reversing valve remains energized at all times system switch is in heat position
(except during defrost cycle). No pressure equalization noise when thermostat is
satisfied on either heating or cooling.
(2)
Allows thermostat to control both heating and cooling operation when set in "Auto"
position. Reversing valve de-energizes at end of each "On" heating cycle.
THERMOSTAT INDICATOR LAMPS
The red lamp marked "Em. Ht." comes on and stays on
whenever the system switch is placed in the emergency
heat position. The green lamp marked "Check" will
come on if there is any problem that prevents the
compressor from running when it is supposed to be.
EMERGENCY HEAT POSITION
The operator of the equipment must manually place the
system switch in this position. This is done when there
is a know problem with the unit, or when the green
"Check" lamp comes on indicating a problem.
COMPRESSOR MALFUNCTION LIGHT
Actuation of the green "Check" lamp is accomplished
by a relay output from the heat pump control board
which is factory installed. Any condition such as loss
of charge, high head pressure, etc., that will prevent
compressor for operating will cause green lamp to
activate. This is a signal to the operator of the
equipment to place system in emergency heat position.
TABLE 4
WALL THERMOSTAT AND SUBBASE COMBINATIONS
t
a
t
s
o
m
r
e
h
T
e
s
a
b
b
u
S
s
e
r
u
t
a
e
F
t
n
a
n
i
m
o
d
e
r
P
5
4
0
-
3
0
4
8
)
1
6
7
1
A
1
4
8
T
(
-
-
-
b
l
u
b
y
r
u
c
r
e
M
;t
a
e
h
.
g
t
s
2
;l
o
o
c
.
g
t
s
1
r
e
v
o
e
g
n
a
h
c
l
a
u
n
a
M
7
1
0
-
3
0
4
8
)
9
2
1
1
R
4
7
8
T
(
9
0
0
-
4
0
4
8
)
1
8
1
1
L
4
7
6
Q
(
b
l
u
b
y
r
u
c
r
e
M
;t
a
e
h
.
g
t
s
2
;l
o
o
c
.
g
t
s
2
r
e
v
o
e
g
n
a
h
c
l
a
u
n
a
M
8
1
0
-
3
0
4
8
)
4
2
0
1
N
4
7
8
T
(
0
1
0
-
4
0
4
8
)
1
6
2
1
F
4
7
6
Q
(
b
l
u
b
y
r
u
c
r
e
M
;t
a
e
h
.
g
t
s
2
;l
o
o
c
.
g
t
s
2
r
e
v
o
e
g
n
a
h
c
l
a
u
n
a
M
r
o
o
t
u
A
2
4
0
-
3
0
4
8
)
0
7
0
1
G
1
1
5
8
T
(
-
-
-
t
a
e
h
.
g
t
s
2
;l
o
o
c
.
g
t
s
1
e
l
b
a
m
m
a
r
g
o
r
P
-
n
o
N
c
i
n
o
r
t
c
e
l
E
r
e
v
o
e
g
n
a
h
c
l
a
u
n
a
M
r
o
o
t
u
A
9
4
0
-
3
0
4
8
)
0
8
3
-
3
9
F
1
(
-
-
-
t
a
e
h
.
g
t
s
2
;l
o
o
c
.
g
t
s
2
c
i
n
o
r
t
c
e
l
E
e
l
b
a
m
m
a
r
g
o
r
P
r
e
v
o
e
g
n
a
h
c
l
a
u
n
a
M
r
o
o
t
u
A