2. Processes and functions
2-8 Discharge Temperature Control (Cooling and Heating)
2 |
This function prevents the compressor motor from burnout by overheating.
| (42 Type) (24, 36 Type) |
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| 275 | 239 |
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| 257 | 221 |
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| 239 | 203 |
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| 235 | 200 |
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DISCHARGE GAS |
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TEMP. (°F) | 230 | 194 |
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| 221 | 185 |
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| OUTDOOR |
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| FAN SPEED | H OR M |
| L | H OR M |
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| COMPRESSOR |
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| ON | |
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| ELECTRONIC REF. |
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| CONTROL VALVE | OPEN |
| OPEN | |
| (DISCHARGE TEMP.) |
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TRIP IS OPERATED.
1928_THS_I
Fig. 11
Chart Summary and Explanations
❑Discharge temperature is sensed by TH8 (discharge gas sensor).
❑When the temperature rises above 203°F (24, 36 Type) the electronic refrigerant control valve opens at 50 steps/30 seconds until the temperature falls below 200°F (24, 36 Type) .
❑During HEATING operation, when the temperature rises above 221°F (24, 36 Type), the control circuit stops the outdoor fan motor until the temperature falls below 194°F (24, 36 Type). Please note that this control does not function during COOLING operation.
❑For both COOLING and HEATING modes, if the temperature reaches 239°F (24, 36 Type) the operation shuts down and alarm P3 appears on the remote controller.
❑The outdoor fan speed is controlled on discharge temp. at heating mode.
SM830082
II - 10
