Daikin Maverick I Installation And Maintenance Manual page 80

Alarm Designation
PRESSURE SWITCH 1
OPEN
Freeze Sensor 1 Out of
Range -FS1 Controller
Freeze Sensor 2 Out of
Range -FS2 Controller
Freeze Sensor #1 Fail-
FS1 Controller
Freeze Sensor #2 Fail-
FS2 Controller
Lockout Temperature –
cooling Controller
Lockout Temperature –
heating Controller
PRESSURE SWITCH 2
CLOSED
PRESSURE SWITCH 2
OPEN
Running Blower Fault-
Air Flow Switch Stuck Controller
Blower Fault - Blower
Not Running-FP Controller
McQuay OM 1077
Origin
Energize inducer indefinitely until pressure switch
IFC
closes or call for heat goes away.
When reading the temperature below 37°F
continuously for 15 minutes, the control shuts down
DDC compressor and runs indoor fan continuously. After
15 minutes of continuous reading above 42°F, the
control recovers from the alarm and resumes
operation.
When reading the temperature below 37°F
continuously for 15 minutes, the control shuts down
DDC compressor and runs indoor fan continuously. After
15 minutes of continuous reading above 42°F, the
control recovers from the alarm and resumes
operation.
DDC
Occurs when sensors are either open or shorted.
DDC
When the outdoor temperature drops below the
cooling lockout temperature setpoint, the unit will
DDC
prevent the compressor from operating in cool
mode. Selectable range is between 30°F and 50°F,
with a default of 35°F.
When the outdoor temperature exceeds the heating
DDC lockout temperature setpoint, the unit will prevent
any source of heat from operating. Selectable range
is between 70°F and 95°F, with a default of 90°F.
Leave inducer de-energized until pressure switch
IFC
open
Energize inducer indefinitely until pressure switch
IFC
closes or call for heat goes away.
DDC
Unit continues to operate
DDC
Complete unit shutdown.
Description
Alarm List
Status/Troubleshooting Information
• Blocked Vent
• Undersized Vent
• Water in Pressure Switch Tubing
• Cracked Pressure Switch Tubing
• Inducer Not Running or Not Running to Full
Speed
• Low Line Voltage to Inducer Motor
• Bad Inducer Motor Capacitor
• Bad Inducer Motor Bearings
• Bad Pressure Switch
• Blocked Heat Exchanger
• If temperature is not below 37°F
• Replace the sensor
• Check sensor is installed correctly on control
• If temperature is not below 37°F
• Replace the sensor
• Check sensor is installed correctly on control
• Replace the sensor
• Check sensor is installed correctly on control
• Check to make sure the outdoor temperature is
not below the set point
• Replace the sensor
• Check to make sure the outdoor temperature is
not above the set point
• Replace the sensor
• Bad Pressure Switch
• Blocked Vent
• Undersized Vent
• Water in Pressure Switch Tubing
• Cracked Pressure Switch Tubing
• Inducer Not Running or Not Running to Full
Speed
• Low Line Voltage to Inducer Motor
• Bad Inducer Motor Capacitor
• Bad Inducer Motor Bearings
• Bad Pressure Switch
• Blocked Heat Exchanger
• Replace the pressure switch
• Indoor motor Not Running or Not Running to
Full Speed
• Low Line Voltage to Indoor motor
• Bad Indoor motor Capacitor/winding
• Bad Indoor motor Bearings
• Bad Pressure Switch
• Broken belt
• Indoor motor running backwards (3 phase)
• Open internal motor protector
25