Outdoor Main |
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Control LEDs |
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| Condition | Solution | Clearing Status | ||
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| Cause(s) | ||||
DS15 |
| DS13 | |||||
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Yellow |
| Red |
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| 1 | Outdoor unit power disconnect is open. |
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| 2 | Unit circuit breaker or fuse(s) is open. |
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| 3 | Unit contactor has failed to close. |
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| S Check compressor contactor wiring and con- |
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| nectors |
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| S Check for compressor contactor failure (burned, |
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| pitted or open) |
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| Compressor has |
| S Check wiring and connectors between supply and |
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| an open circuit |
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5 Flashes |
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| compressor | Clears after one normal | |
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| due to power dis- |
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then |
| OFF | Open Circuit |
| S Check for low pilot voltage at compressor con- | compressor run cycle or | |
| connection, fuse |
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Pause |
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| tactor coil | power reset. | |
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| is open or other |
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| 4 |
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| similar conditions. | High pressure switch is open and requires manual |
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| reset. |
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| 5 | Open circuit in compressor supply wiring or con- |
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| nections. |
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| 6 | Unusually long compressor protector reset time due |
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| to extreme ambient temperature. |
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| 7 | Compressor windings are damaged. |
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| S Check compressor motor winding resistance |
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| 1 | Run capacitor has failed. |
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| 2 | Open circuit in compressor start wiring or connec- | Clears when amperage is |
6 Flashes |
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| Current not |
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| Open Start |
| detected in RUN and | |||
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then |
| OFF | sensed by Start |
| S Check wiring and connectors between supply and | ||
| Circuit |
| START sensors, or after | ||||
Pause |
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| transformer. |
| the compressor S terminal | power reset. |
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| 3 | Compressor start winding is damaged. | |
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| S Check compressor motor winding resistance |
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| 1 | Open circuit in compressor start wiring or connections. |
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7 Flashes |
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| Open Run | Current not |
| S Check wiring and connectors between supply and | Clears when amperage is |
then |
| OFF | sensed by run |
| the compressor R terminal | detected in RUN and | |
| Circuit |
| START sensors, or after | ||||
Pause |
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| transformer. | 2 | Compressor start winding is damaged. | ||
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| power reset. | ||||
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| S Check compressor motor winding resistance |
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8 Flashes |
| OFF | Welded | Compressor | 1 | Compressor contactor failed to open. | Clears after one normal |
then |
| Contactor | always runs | 2 | Thermostat demand signal not connected to module. | compressor run cycle or | |
Pause |
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| after power reset. | ||||
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9 Flashes |
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| 1 | Control circuit transformer is overloaded. | Clears after voltage is higher |
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| Secondary | 24VAC is below | 2 | Low line voltage (contact utility if voltage at disconnect | than 20VAC for two | |
then |
| OFF | |||||
| Low Voltage | 18VAC. |
| is low). | seconds, or after power | ||
Pause |
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| S Check wiring connections | reset. | |
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Fast simultaneous |
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flashing of DS11, | OEM Mode | Factory Test Mode. |
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DS13, DS14 and |
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DS15 |
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Page 38
506510−01
