Daikin Maverick I Installation And Maintenance Manual page 81

Alarm List
Alarm Designation
ELM - OAE Sensor Fail
ELM - RAE Sensor Fail
ELM - MAT Sensor Fail
ELM – CO2 Sensor Fail
ELM Actuator Fault
Low Discharge Air
Temp-DAT Controller
High Return Air Temp-
RAT Controller
Return Air Sensor Fail-
RAT Controller
Discharge Air Sensor
Fail-DAT Controller
Outdoor Air
Temperature Sensor
Controller
Fail-OAT
Condenser Coil 2
Temperature Out of
Controller
Range
Discharge Air
Temperature Out of
Controller
Range
Emergency Stop Fault
Comm card
miscommunication Controller
DDC CONTROLLER
Miscommunication with
IFC
Internal Control Fault -
DDC CONTROLLER Controller
Internal Control Fault -
IFC
Space Sensor Alarm
Controller
Space Sensor & Return
Sensor Fail Controller
26
Origin
ELM Sensor short, failure
ELM Sensor short, failure
ELM Sensor short, failure
ELM Sensor short, failure
ELM
DDC
Threshold is 30°F.
DDC
Threshold is 120°F.
DDC If the sensor has ever been installed to the unit, the
alarm will be set if it becomes unavailable.
DDC If the sensor has never been installed to the unit, the
alarm will be set if it becomes unavailable.
Control changes defrost to time x temperature
mode. The heat source continues to be heat pump,
DDC
independently of the outdoor air temperature.
Additional heat sources are also available in case
the demand is not satisfied.
DDC No defrost operation, but unit continues to operate in
either heating or cooling.
DDC If the sensor has ever been installed to the unit, the
alarm will be set if it becomes unavailable.
Complete shutdown
DDC Communication card failed to communicate with the
DDC Controller
IFC failed to communicate with the DDC
IFC
CONTROLLER
DDC
IFC
If the space sensor fails open or shorted, the space
sensor alarm will be set, but the control will continue
to operate using the return air sensor in place of the
space sensor. If the control has never sensed a valid
space sensor input, it will assume no space sensor
DDC
is present to be used, and not set the space sensor
alarm. If a valid space sensor input is ever detected,
the control will set a non-volatile flag to indicate the
control should have and use a space sensor. When
the non-volatile flag is set, the control will detect
space sensor alarm conditions.
DDC Indicate presence of the alarm and convert
operation to thermostat mode.
Description Status/Troubleshooting Information
• Replace the sensor
• Check sensor is installed correctly on control
•
• Replace the sensor
• Check sensor is installed correctly on control
• Extreme temperatures
• Replace the sensor
• Check sensor is installed correctly on control
• DCV is enabled with no sensor
• Replace the sensor
• Check sensor is installed correctly on control
•
• Check to make sure the Discharge Air
temperature is below the set point
• Replace the sensor
• Low refrigerant
• Check to make sure the Return Air temperature
is not above the set point
• Replace the sensor
• Extreme temperatures
• Replace the sensor
• Check sensor is installed correctly on control
• Extreme temperatures
• Replace the sensor
• Check sensor is installed correctly on control
• Extreme temperatures
• Replace the sensor
• Check sensor is installed correctly on control
• Extreme temperatures
• Replace the sensor
• Check sensor is installed correctly on control
• Extreme temperatures
• Replace the sensor
• Check sensor is installed correctly on control
•
• Check wire connection at both controls
• Bad Comm card and/or DDC Controller
• Check wire connection at both controls
• Bad IFC and/or DDC Controller
• Replace the sensor
• Check sensor is installed correctly on control
• Replace the sensors
• Check sensors are installed correctly on control
McQuay OM 1077