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Outdoor Main Control
LEDs
DS11
DS11
DS14 Red
DS14 Red
Green
Green
1 Fast
OFF
Flash then
Pause
2 Fast
OFF
Flash then
Pause
2 Fast
Flash then
ON
Pause
1 Fast
Flash then
OFF
Pause
2 Fast
Flash then
OFF
Pause
2 Fast
Flash then
ON
Pause
SLOW
OFF
Flash
OFF
ON
SLOW
OFF
Flash
ON
OFF
SLOW
ON
Flash
FAST
ON
Flash
OFF
Fast Flash
Fast simultaneous
flashing of DS11, DS13,
DS14 and DS15
506510−01
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Condition
Condition
Condition
Possible Cause(s)
Possible Cause(s)
Possible Cause(s)
Heating Low
Capacity
Heating High
Capacity
Defrost
These are codes that show status of operation whether in low stage or high stage, heating or cooling,
defrost or in the EDA mode.
Cooling Low
Capacity
Cooling High
Capacity
Dehumidification
Mode
Low Pressure
1
Restricted air flow over
Fault
indoor or outdoor coil.
2
Improper refrigerant
Low Pressure
charge in system.
Switch Lockout
3
Improper metering de-
vice installed or incorrect
High Pressure
operation of metering de-
Fault
vice.
4
Incorrect or improper
High Pressure
sensor location or con-
Discharge Sensor
Lockout
nection to system.
Discharge Line
Temperature Fault This code detects high discharge temperatures. If the discharge line temperature exceeds a temperature
of 279ºF (137ºC) during compressor operation, the control will de−energize the compressor contactor
output (and the defrost output if active). The compressor will remain off until the discharge temperature
Discharge Line
has dropped below 225ºF (107ºC). See Figure 21 for further details concerning lockouts and reset
Temperature
procedures.
Lockout
The control detects open or short sensor or out of temperature sensor range. This fault is detected by
Discharge Sensor
allowing the unit to run for 90 seconds before checking sensor resistance. If the sensor resistance is
Fault
not within range after 90 seconds, the control will raise the alarm.
OEM Mode
Factory Test Mode.
search engine
ALERT STATUS
1
Remove any blockages or restrictions from coils and/or fans. Check
indoor and outdoor fan motor for proper current draws.
2
Check system charge using approach and subcooling temperatures.
3
Check system operating pressures and compare to unit charging
charts.
4
Make sure all pressure switches and sensors have secure connec-
tions to system to prevent refrigerant leaks or errors in pressure and
temperature measurements.
Page 36
Solution
Solution
Solution
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