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Modulex EXT Commercial Series
CHAPTER 8: Maintenance Schedule
OMM-0160_A
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of
117
FAULT CODE
DESCRIPTION
EFFECT
CORRECTION
RESET
HCM: 39
User parameters
Settings corrupted
by electromagnetic
interference.
None
Contact factory.
AUTO
HCM: 40
Low water flowrate
Low system flow
rate.
Water flow is not
detected by sensor
connected to BCM
terminal Y2/FL-TA 20
seconds after the
Pump activation.
Burners turned OFF.
Check water flow or
check switch.
AUTOMATIC
HCM: 56
Heat control lack
BCM: No remote
control detected
It is possible to
activate burner
ignition from the
BCM manual request
button
HCM: 57
Burners lack
BCM: No BMM
detected
Burners turned OFF.
Check electrical
connections BMM and
e-BUS
AUTOMATIC
HCM: 58
Global temperature
sensor
BCM: Sensor global
flow detected.
Burners turned OFF.
Check the flow sensor
connection. Replace
the sensor.
AUTOMATIC
HCM: 73
Flow sensor
Water deficiency
pressure switch
- NOT
APPLICABLE
HCM: 93
Security block
AUXILIARY SAFETY
INTERVENTION
Stop burner and stop
pump
check the jumper or
safety devices wired
to connector Y2,
terminals 11/2.
MANUAL
Содержание AERCO MLX EXT 1500 2S
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