Hitachi RAS-70YH7 Service Manual page 54

6. Room Temperature Thermistor Circuit
Fig. 6-1 shows the room temperature
●
thermistor circuit.
7. Heat exchanger temperature thermistor circuit
The circuit detects the indoor heat
●
exchanger temperature and controls
the following.
(1) Low-temperature defrosting
during cooling and dehumidifying
operation.
The voltage at A depends on the heat
exchanger temperature as shown in
Fig. 7-2.
The voltage at A depends on the room
●
temperature as shown in Fig. 6-2.
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