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4. Room Temperature Thermistor Circuit
●
Fig. 4-1 shows the room temperature
thermistor circuit.
5. Heat exchanger temperature thermistor circuit
●
The voltage at depends on the room
temperature as shown in Fig. 4-2.
●
The circuit detects the indoor heat
exchanger temperature and controls
the following.
(1)
Preheating.
(2)
Low-temperature defrosting
during cooling and dehumidifying
operation.
(3) Detection of the reversing valve
non-operation or heat exchanger
temperature thermistor open.
The voltage at depends on the
heat exchanger temperature as shown
in Fig. 5-2.
A
A
Summary of Contents for RAM-36NP2A
Page 45: ... 43 MODEL RAI 25RPA RAI 35RPA RAI 50RPA WIRING DIAGRAM INDOOR UNIT ...
Page 46: ...Remote Control CIRCUIT DIAGRAM 45 ...
Page 47: ...CIRCUIT DIAGRAM MODEL RAI 25RPA RAI 35RPA RAI 50RPA 47 ...
Page 48: ... 49 ...
Page 49: ... 51 ...
Page 52: ... 57 ...
Page 54: ... 61 ...
Page 56: ... 65 ...
Page 57: ... 67 ...
Page 62: ... 73 ...
Page 69: ... 80 ...
Page 70: ... 81 ...
Page 72: ... 83 1 Power does not come on no operation CHECKING INDOOR UNIT ELECTRICAL PARTS ...
Page 74: ... 85 ...
Page 75: ... 86 ...
Page 76: ... 87 HOW TO CHANGE THE SHIFT VALUE for SETTING TEMPERATURE USING WIRED REMOTE CONTROLLER ...
Page 77: ... 88 ...
Page 78: ... 89 ...
Page 79: ... 90 ...
Page 80: ... 91 CHECKING THE REMOTE CONTROLLER ...
Page 81: ... 92 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL RAI 25RPA RAI 35RPA RAI 50RPA ...
Page 85: ... 96 MODEL RAI ECPP PANEL ...
Page 87: ...HITACHI PM NO 0530E Printed in Malaysia RAI 25RPA RAI 35RPA RAI 50RPA ...