Aerco Modulex E8 Controller (and BCM) For Modulex EXT Bo Uživatelský manuál stáhnout pdf (Strana 106)

E8 Controller and BCM for Modulex EXT

Installation, Operation & Maintenance Manual

CHAPTER 10: E8, BCM, AND BMM FAULT CODES

Page 106 of 108 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0093_0A

PRI: 06/24/2013 Phone: 800-526-0288 GF-136-C

Table 10-4: BMM Fault Codes (Continued)

CODE DESCRIPTION EFFECT CORRECTION RESET

Return Sensor

fault

All burners

turned OFF.

Check return sensor or

wiring.

AUTOMATIC

Maximum Δ-

temperature

protection. Flow

temperature -

Return

Temperature >

Water Δ-Temp

Protection + 50°F

All burners

turned OFF

and Pump

ON at

maximum

speed.

Check the system

installation.

AUTOMATIC -

when Δ-

temperature <

Water Δ-Temp

Protection.

Boiler Pipe is

frozen.

FlowSensor

temperature is

36°F or less.

Ignition is

inhibited.

Pump runs

for 5 min at

max speed.

Carefully defrost boiler.

AUTOMATIC -

when FlowSensor

is greater than

41°F.

Flame signal

detected after

burner is OFF.

Ignition is

inhibited.

Disconnect gas valve wire

from BMM. If failure goes

away, check wiring or

change BMM. If failure

remains check or change

gas valve.

MANUAL - push

reset switch or

cycle power.

No air flow at

burner after fan

started for 30

seconds.

Ignition retry

after 60

second

delay and

failure

remains until

we have a

successful

burner

operation.

If fan is stopped, check

supply voltage and fan

wiring. If OK try another

fan. If still not working

change the BMM.

If fan is not stopped, check

the exhaust gas outlet for

blockage. If OK then check

the air pressure switch

wiring. If still not working try

another air pressure switch.

If still not working, change

the BMM.

AUTOMATIC/

MANUAL

The air pressure

switch doesn't

switch off.

Ignition is

inhibited.

Disconnect the air proving

switch. If problem goes

away install a new switch. If

not, check the wiring. If

wiring OK then change

BMM.

AUTOMATIC

1 2 ... 101 102 103 104 105 106 107 108

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