Aerco Modulex MLX-303 User Manual

MC2: 10/03/12 Page 74 of 90
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
GF-115-H
OMM-0083_0B
Modulex MLX Series Gas Fired Boiler System
Operation and Maintenance Manual
Chap 10:
Troubleshooting
FAULT
INDICATION
PROBABLE
CAUSES
CORRECTIVE ACTION
E83:
E8/3/F15 – Room
sensor for Heating
Circuit 2
1. Loose or broken
wiring.
2. Defective Sensor.
3. Incorrect Sensor.
1. Inspect sensor for loose or broken wiring.
2. Check resistance of sensor to determine if it is within
specification.
3. Ensure that the correct sensor is installed.
E135:
E8/5/F12 – HW
storage tank low
sensor, Multi-
Function relay
sensor 2
1. Loose or broken
wiring.
2. Defective Sensor.
3. Incorrect Sensor.
1. Inspect sensor for loose or broken wiring.
2. Check resistance of sensor to determine if it is within
specification.
3. Ensure that the correct sensor is installed.
E136:
E8/8F13 –
(PT1000): HS2,
Collector 2, Multi-
Function relay
sensor 3
1. Loose or broken
wiring.
2. Defective Sensor.
3. Incorrect Sensor.
1. Inspect sensor for loose or broken wiring.
2. Check resistance of sensor to determine if it is within
specification.
3. Ensure that the correct sensor is installed.
E137:
E8/8/F14 –
(PT1000): Collector
1, Multi-Function 4
1. Loose or broken
wiring.
2. Defective Sensor.
3. Incorrect Sensor.
1. Inspect sensor for loose or broken wiring.
2. Check resistance of sensor to determine if it is within
specification.
3. Ensure that the correct sensor is installed.
E138:
E8/3/F15 – Room
temperature sensor
for HC2
1. Loose or broken
wiring.
2. Defective Sensor.
3. Incorrect Sensor.
1. Inspect sensor for loose or broken wiring.
2. Check resistance of sensor to determine if it is within
specification.
3. Ensure that the correct sensor is installed.
Table 10-1: Boiler Troubleshooting – System Manager – Defective Sensor (Cont.)

Aerco Modulex MLX-303 Specifications

General

Brand	Aerco
Model	Modulex MLX-303
Category	Boiler
Language	English