beautypg.com

4 bmm (burner management module) fault codes, Modulex ext – AERCO Modulex EXT 1530 - 3060 User Manual

Page 110

background image

MODULEX EXT

1530, 1912, 2295, 2677, 3060 Boilers

Installation, Operation & Maintenance Manual

6.1.4 BMM (Burner Management Module) Fault Codes

The table below lists the fault codes and troubleshooting tips associated with the BMM.

Table 6-4: BMM Fault Codes

CODE DESCRIPTION

EFFECT

CORRECTION

RESET

E 1

High Limit (STB)

Thermostat

activated.

All burners

turned OFF and

pump ON at

maximum speed.

Check flow sensor thermal

connection to boiler.

MANUAL - push

reset switch

when

temperature goes

below limit.

E 2

Low gas

pressure.

All burners

turned OFF.

Check gas pressure or gas

pressure switch.

AUTOMATIC -

when gas

pressure switch

closes.

E 4

No flame

detected at

burner start.

Burner control

lockout.

Check flame rod or

combustion.

MANUAL - push

reset switch or

cycle power.

E 5

Flame loss during

run.

Ignition retry.

Check combustion and

wiring.

MANUAL - push

reset switch or

cycle power.

E 6

High outlet

temperature.

Flow sensor

temperature >

203°F.

All burners

turned OFF and

pump ON at

maximum speed.

Check flow sensor or

system pump

AUTOMATIC -

when Flow

sensor < 176°F.

E 10 Internal failure.

Ignition is

inhibited.

Contact factory for new

BMM.

MANUAL - cycle

the power.

E 11

Flame signal

detected before

ignition.

Ignition is

inhibited.

Disconnect flame rod wire

from BMM. If problem

goes away, change flame

rod and/or wire. If problem

does not go away, change

BMM.

MANUAL - push

reset switch or

cycle power.

E 12 Flow sensor fault. All burners

turned OFF.

Check flow sensor or

wiring.

AUTOMATIC

E 13 Aux sensor fault.

The boiler will

operate from the

Flow sensor

without the Aux

sensor.

Check aux sensor or

wiring.

AUTOMATIC




Page 110 of 138

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913

OMM-0095_0E

12/01/14

Phone: 800-526-0288

GF-139