Trane CVHE Troubleshooting

CVHE-SB-32A 84
Starter Contactor Sequence
Timing requirements to operate the “Stop,” “Start,” “Short,” “Transition,” and “Run” contact
closure outputs are shown below. Prior to closing the “Short” contact, the transition complete
input is verified to be open, otherwise a MMR diagnostic is generated.
N
R
u
n
S
t
a
r
t
S
h
o
r
t
T
r
a
n
s
i
t
i
o
n
T
r
a
n
s
i
t
i
o
n
C
o
m
p
l
e
t
e
I
n
p
u
t
C
l
o
s
e
d
O
p
e
n
C
l
o
s
e
d
C
l
o
s
e
d
C
l
o
s
e
d
C
l
o
s
e
d
O
p
e
n
O
p
e
n
O
p
e
n
O
p
e
n
K
H
MaximumPhase Current
< or = to 85 %RLA
S
t
o
p
J
L
M
G
C
l
o
s
e
d
O
p
e
n
A
B
C
D
E
F

Trane CVHE Specifications

General

Brand	Trane
Model	CVHE
Category	Chiller
Language	English