Lennox DM User Manual

DC-DM-ROOFTOP-IOM-1801-E - 35 -
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
DS
MENU
041
Hot Water, Pump.
The electrical protection of the
circulator has operated.
Delayed: 15s,
Enabled: 5s after pump start
Stop the pump,
Close hot water
valve.
Manually
• Problem with wiring
connection,
• Pump failure.
• Check the wiring connections,
• Check the pump.
[2744]
051
Recovery, Motor.
The status of the wheel
recovery motor signals a failure
on the system.
Delayed: 10s,
Enabled: 30s after motor start.
Stop the motor. Manually
• Problem with wiring
connection,
• Wheel motor failure.
• Check the wiring connections,
• Check the motor.
[2878]
052
Recovery, Wheel.
The ΔT(|outdoor-outlet
recovery|) temperature is lower
than the safety limit.
Threshold: < [3874],
Delayed: 30s,
Waiting stop: 5min,
Enabled: 15min after motor
start.
Stop the motor. 3/day
• Wheel belts broken,
• Problem with wiring
connection (sensor in short
circuit or disconnected),
• Sensor damaged,
• Wrong setting.
• Replace the belts
• Check the wiring connections,
• Replace the probes,
• Check the setting (3874).
[2873]
or
[2875]
054
Recovery, Filters, Clogged.
The differential pressure
between the treatment unit and
the filters is too high.
Threshold: > [3875],
Delayed: 1min.
Signalling. Automatic
• Filters clogged,
• Problem with the pressure
transmitter wiring,
• Incorrect settings of the safety
threshold.
• Fit new filters,
• Clean or replace the filters,
• Check the connections,
• Check the settings (3875).
[2876]
056
Recovery, Air Flow, Sensor.
The value of the sensor
measured is incorrect.
Delayed: 15s. Stop the motor. Automatic
• Sensor failure,
• Problem with wiring of sensor.
• Check the sensor
• Check the wiring connections.
[2876]
059
Recovery, Outlet
Temperature, Probe.
The value of the probe
measured is incorrect.
Delayed: 15s. Stop the motor. Automatic
• Probe failure,
• Problem with wiring of probe.
• Check the probe
• Check the wiring connections.
[2875]
070
CLIMATIC board, Real Time
Clock, Battery.
The CLIMATIC™ real time
clock battery is faulty
Delayed: 1s Signalling. Automatic • Battery low voltage • Replace the clock battery #
071
Expansion Board, BE N°1,
Link Failure.
The expansion board 1 is
disconnected from the Fieldbus
network.
Delayed: 1s,
Enabled: 30s after power on.
Signalling. Automatic
• Expansion board failed,
• Problem with wiring of
fieldbus,
• Wrong setting.
• Replace expansion board,
• Check the bus connections,
• Check the setting (3121 to
3147).
#
072
Expansion Board, BE N°2,
Link Failure.
The expansion board 2 is
disconnected from the Fieldbus
network.
Delayed: 1s,
Enabled: 30s after power on
Signalling. Automatic
• Expansion board failed,
• Problem with wiring of
fieldbus.
• Replace expansion board,
• Check the bus connections
#

Lennox DM Specifications

General

Brand	Lennox
Model	DM
Category	Monitor
Language	English