Discharge Temperature Control (Cooling And Heating) - Sanyo XHS3632 Service Manual

2-8 Discharge Temperature Control (Cooling and Heating)

This function prevents the compressor motor from burnout by overheating.
Section
DISCHARGE GAS
TEMP. ( F)
1
2
ELECTRONIC REF.
CONTROL VALVE
(DISCHARGE TEMP.)
3
4
239
221
203
200
194
185
OUTDOOR
FAN SPEED H OR M
COMPRESSOR
Chart Summary and Explanations
Discharge temperature is sensed by TH8 (discharge gas sensor).
When the temperature rises above 203°F the electronic refrigerant control valve opens at
50 steps/30 seconds until the temperature falls below 200°F.
During HEATING operation, when the temperature rises above 221°F, the control circuit
stops the outdoor fan motor until the temperature falls below 194°F. Please note that this
control does not function during COOLING operation.
For both COOLING and HEATING modes, if the temperature reaches 239°F the operation
shuts down and alarm P3 appears on the remote controller.
The outdoor fan speed is controlled on discharge temp. at heating mode.
M
ON
OPEN
– 34 –
2. Processes and functions
H OR M
OPEN
TRIP IS OPERATED.
1141_THS_I
Fig. 11
SM830076