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
LA
BE
L
GND NC UV
Y2
Y1
O
R
D
BARCODE
TRANE U.S. INC
B
1
HP
1
1
R67
R89
R88
TP
18
3
TP181
U1
R
78
H4
H3
H2
H1
RN1
U4
R3
K
4
K1
C2
C36
CR44
+
C19
K3
TP109
D
11
C1
C17
C21
C26
C2
7
C29
+
C30
C31
+
C35
C4
1
C4
2
C4
3
C44
C4
5
C7
7
C7
8
C79
C83
C
R1
C
R
2
CR3
CR
4
CR5
C
R
6
CR9
CR10
CR
26
CR
42
CR43
CR50
C
R5
1
C
R
52
CR53
D4
D19
1
1
LED3
LED4
LE
D5
P1
Q7
Q8
Q9
Q10
Q11
Q1
4
R1
R2
R26
R3
2
R34
R3
7
R4
0
R4
1
R
43
R
44
R
46
R4
7
R4
8
R49
R5
5
R57
R59
R6
1
R62
R
65
R
66
R
71
R7
3
R74
R81
R8
2
R
83
R87 R98
R106
R1
08
R1
15
R1
18
R119
R
12
5
R
12
6
R
12
7
R1
54
R
15
7
R158
R164
U2
VR1
VR
4
VR7
VR8
VR10
X1
ZR7
K2
L1
C20
C3
2
R45
ZR
3
U
6
R6
0
CR28
LA
BE
L
Y2
Y1
D
BARCODE
TRANE U.S. INC
U1
H4
H3
H2
K
4
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.