Name: Aerco MODULEX EXT 321
Brand: Aerco
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MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS

Installation, Operation & Maintenance Manual

Page 114 of 146 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0F

07/13/15 Phone: 800-526-0288 GF-143

In order to derive the error message from the code displayed in the E8 Controller display, use

Table 6-1 below to determine the working error code. To use the table, find the displayed

number in the first column, identify the affected module from the second column, apply the

formula from the third column, and identify the Error Table to reference from the fourth column.

Table 6-1: Determining the “Error Code” Reading from the E8 Controller Display

Observed Code

Observed

Code

Code to Look Up in Table

Code = 0 N/A No Fault -

Code between 1 and 255 BMM #0 Fault Look up code 6-4

Code between 256 and 511 BMM #1 Fault Subtract 256 from reading 6-4

Code between 512 and 767 BMM #2 Fault Subtract 512 from reading 6-4

Code between 768 and 1023 BMM #3 Fault Subtract 768 from reading 6-4

Code between 1024 and 1279 BMM #4 Fault Subtract 1024 from reading 6-4

Code between 1280 and 1535 BMM #5 Fault Subtract 1280 from reading 6-4

Code between 1536 and 1791 BMM #6 Fault Subtract 1536 from reading 6-4

Code between 1792 and 2047 BMM #7 Fault Subtract 1792 from reading 6-4

Code between 2048 and 65279 N/A Invalid Codes -

Code above 65280 BCM Fault Subtract 65280 from reading 6-3

Example:

Based on the above, a code reading of “261” means the fault occurred on

BMM #1. The fault code is (261 – 256 = ) 5. An Error Code of 5 from the

BMM Fault Codes table means “Flame Loss During Run”.

Aerco MODULEX EXT 321 User Manual

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