Troubleshooting guide

APPENDIX H
H-6
7
6
7
5
3
4
6
1
2
OUT
IN
OUT
IN
IN
OUT
FAULT
RELAY
NOT USED
DELAYED INTLK
EXHAUST TEMP
REMOTE INTLK
N.O.
C
4
3
5
1
2
NOT USED
N.C.
C
N.O.
N.C.
RELAY
AUX
12
13
14
11
SENSOR EXCIT. (12 VDC)
BMS (PWM) IN
ANALOG IN
OXYGEN SENSOR IN
FLOW SENSOR IN
CO SENSOR IN
+
-
-
+
-
+
-
+
AUX SENSOR IN
SENSOR COMMON IN
-
+
1
OUTDOOR AIR SENSOR IN
9
8
7
5
3
4
2
6
10
OUT
IN
LONWORKS
A
B
GND
4
1
2
1
-
+
2
2
1
3
3
ANALOG OUT
15
16
SHIELD
B
RS-485 IN
A
+
-
358
359
ANALOG OUT
359
358
+
-
TO VFD
TO VFD