TAM821
CCM COMM LED
Device count
CCM STATUS LED
1 Flash per second
1 Flash per 4 seconds
2 Flash per 4 seconds
CCM FAULT LED
3 Flash
Description
Number of communicating devices*
Description
Idle / Standby
1st Stage
2nd Stage
Description
Communication Error
LED Codes - The three LED lights below appear on
the CCM control board. (BAYCC24VK01A)
OFF
1
1MODE
L
A
BEL
GNDNCUV
Y2
Y1
O
R
D
BARCODE
TRANEU.S.INC
B
1
HP
1
1
R67
R89
R88
TP
183
TP181
U1
R
7
8
H4
H3
H2
H1
RN1
U4
R3
K4
K1
C2
C36
CR44
+
C19
K3
TP109
D
1
1
C1
C17
C21
C26
C27
C29
+
C30
C31
+
C35
C41
C42
C43
C44
C45
C77
C78
C79
C83
C
R1
C
R
2
CR3
CR4
CR5
C
R
6
CR9
CR10
CR26
CR
4
2
CR43
CR50
C
R51
C
R
52
CR53
D4
D19
1
1
LED3
LED4
LED
5
P1
Q7
Q8
Q9
Q10
Q11
Q14
R1
R2
R26
R32
R34
R3
7
R40
R41
R
43
R
4
4
R
4
6
R47
R48
R49
R55
R57
R59
R61
R62
R
65
R
6
6
R
71
R73
R74
R81
R82
R
83
R87
R98
R106
R10
8
R1
15
R118
R119
R
125
R
126
R
127
R15
4
R
157
R158
R164
U2
VR1
VR
4
VR7
VR8
VR10
X
1
ZR7
K2
L1
C20
C32
R45
ZR3
U
6
R60
CR28
L
A
BEL
Y2
Y1
D
BARCODE
TRANEU.S.INC
U1
H4
H3
H2
K4
K1
K3
1
1
K2
OFF
J1
J2
J3
S1
ON
AC
HP
1
1
2 STG
2CMP
COM
STATUS
FAULT
COM
STATUS
FAULT
CCM STATUS LED (GREEN LED)
CCM FAULT LED (RED LED)
CCM COM LED (AMBER LED)
* Examples: communicating thermostat,
communicating air cleaner, etc.