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