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SM830082
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Section
5
2. Processes and functions
2-8 Discharge Temperature Control (Cooling and Heating)
This function prevents the compressor motor from burnout by overheating.
OUTDOOR
FAN SPEED
DISCHARGE GAS
TEMP. (°F)
239
(24, 36 Type)
221
203
200
194
185
275
(42 Type)
257
239
235
230
221
COMPRESSOR
ELECTRONIC REF.
CONTROL VALVE
(DISCHARGE TEMP.)
TRIP IS OPERATED.
H OR M
L
1928_THS_I
OPENOPEN
H OR M
ON
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.