Hitachi RAM-71QH5 Service Manual page 33

RAM-71QH5
Power Power Power Power Power Power
Unit 1
Unit 2
Unit 3
Unit 4
Operation
Rush-in prevention
Power
Turns on
for heating
Outdoor fan
Compressor
rotation speed
100ms
520
480
0
520
480
0
520
480
0
520
480
0
TSKTM1, SDRCT1, SDSTEP, TSKSPT, CMAX2, PSTART and PSTARTH are EEPROM data.
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1S 1S
100ms
Initialization
– 42 –
Cooling
Cooling
Cooling
Cooling
1S
Start sequence
[TSKTM1_C ]
*
Steady speed period
[SDRCT1_C ]
*
<TD control + N compensation + Diving control >
[PSTARTC3 ]
*
<TD control + N compensation + Diving control >
[PSTARTC3 ]
*
<TD control + N compensation + Diving control >
[PSTARTC3 ]
*
<TD control + N compensation + Diving control >
[PSTARTC3 ]
*
Target speed
Step up control
—1
[SDSTEP]min
/[TSKSPT] sec