AERCO Control System (ACS)
APPENDIX B:
Status and Fault Messages
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 97 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
TABLE B-3: Conversion Equations for Temp. Variables – Temp to Variable Counts
Register
Variable Type
Degrees Fahrenheit (°F)
Degrees Celsius (°C)
ABS_DEG_1
For (degF>0):
+
∗
=
230
115
(1000)
(degF)
RegVar
For (degF<0):
−
∗
=
230
115
(1000)
(degF)
RegVar
For (degC> 0):
−
∗
=
128
115
(1000)
(degC)
RegVar
For (degC<0):
−
∗
=
128
64
(1000)
(degC)
RegVar
B.4 INTERPRETING BCM FAULT CODES (MODULEX)
NOTE
In order to properly interpret a Fault Code for the BCM (Boiler Communication Module), use the
table below to determine the actual Fault Code in which to look up in tables B-5 and B-6.
Formula for Interpreting BCM Fault Codes (Modulex)
Displayed
Number
Between:
Fault Name
Fault Code Formula
0
No Fault
None
1
and
255
BMM #0 Fault Displayed Number = BMM Fault Code in Table B-6
256
and
511
BMM #1 Fault Subtract 256 from Displayed Number = BMM Fault Code in Table B-6
512
and
767
BMM #2 Fault Subtract 512 from Displayed Number = BMM Fault Code in Table B -6
768
and
1023
BMM #3 Fault Subtract 768 from Displayed Number = BMM Fault Code in Table B -6
1024
and
1279
BMM #4 Fault Subtract 1024 from Displayed Number = BMM Fault Code in Table B -6
1280
and
1535
BMM #5 Fault Subtract 1280 from Displayed Number = BMM Fault Code in Table B -6
1536
and
1791
BMM #6 Fault Subtract 1536 from Displayed Number = BMM Fault Code in Table B -6
1792
and
2047
BMM #7 Fault Subtract 1792 from Displayed Number = BMM Fault Code in Table B -6
2048
and
65279
Invalid Codes None
Above
65280
BCM Fault
Subtract 65280 from Displayed Number = BCM Fault Code in Table B -5
Example:
A displayed number of “261” means the fault occurred on BMM #1, and after subtracting 256
from 261 (261 – 256 = 5), the actual Fault Code is 5, which, according to Table B-6 means
“Flame Loss During Run”.