Lennox DM User Manual

DC-DM-ROOFTOP-IOM-1801-E - 34 -
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
DS
MENU
023
Room Temperature, Too
High.
The temperature measured by
the probe is outside of the
permitted range.
Threshold: > [3256],
Delayed: 15s,
Enabled: 2min after Blower
start.
Signalling. Automatic
• Insufficient airflow,
• Temperature probe failed,
• Problem with wiring of probe,
• Wrong setting.
• Check the air system,
• Replace probe,
• Check the connections of the
probe,
• Check the setting (3256).
[2221]
024
Room Temperature, Too
Low.
The temperature measured by
the probe is outside of the
permitted range.
Threshold: < [3255],
Delayed: 15s,
Enabled: 2min after Blower
start.
Signalling. Automatic
• Insufficient airflow,
• Temperature probe failed,
• Problem with wiring of probe,
• Wrong setting.
• Check the air system,
• Replace probe,
• Check the connections of the
probe,
• Check the setting (3255).
[2221]
025
Water Condenser
Temperature, Too Low
The temperature measured by
the probe is outside of the
permitted range.
Threshold: < [3531],
Delayed: 15s.
Stop all
compressors.
Automatic
• Water loop temperature too
low,
• Wrong setting.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Check the setting (3531).
[2531]
or
[2532]
026
Water Condenser
Temperature, Too High
The temperature measured by
the probe is outside of the
permitted range.
Threshold: > [3532],
Delayed: 15s.
Stop all
compressors.
Automatic
• Water loop temperature too
high,
• Wrong setting.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Check the setting (3532).
[2531]
or
[2532]
027
Water Condenser, Pump.
The status of the pump signals
a failure on the system.
Delayed: 5s.
Stop all
compressors.
Manually
• Problem with wiring
connection,
• Pump failure.
• Check the wiring connections,
• Check the pump.
[2535]
029
Air Quality, Too High.
The value measured by the
sensor is outside of the
permitted range.
Threshold: > [3855],
Delayed: 15s.
Signalling. Automatic
• Problem with wiring
connection (sensor in short
circuit or disconnected),
• Sensor damaged,
• Wrong setting.
• Check the wiring connections,
• Replace the sensor,
• Check the setting (3855).
[2853]
031
Humidifier.
The status of the humidifier
signals a failure on the system.
Delayed: 1min.
Stop the
humidifier.
Automatic
• Problem with wiring
connection.
• Check the wiring connections. [2923]
032
Room, Air Hr% or g/kgAS,
Too Low.
The value measured by the
sensor is outside of the
permitted range.
Threshold: < [3258],
Delayed: 15s,
Enabled: 2min after Blower
start.
Signalling. Automatic
• Humidity sensor failed,
• Problem with wiring of sensor,
• Wrong setting.
• Check the wiring connections,
• Replace the sensor,
• Check the setting (3258)
[2265]
or
[2266]
033
Room, Air Hr% or g/kgAS,
Too High.
The value measured by the
sensor is outside of the
permitted range.
Threshold: > [3259],
Delayed: 15s,
Enabled: 2min after Blower
start.
Signalling. Automatic
• Humidity sensor failed,
• Problem with wiring of sensor,
• Wrong setting.
• Check the wiring connections,
• Replace the sensor,
• Check the setting (3259)
[2265]
or
[2266]

Lennox DM Specifications

General

Brand	Lennox
Model	DM
Category	Monitor
Language	English