Hitachi RAF-25NH4 Données Techniques page 133

During two-cycle heating operation
Defrosting signal
Defrosting request between
outdoor microcomputers
Unit 1
Unit 2
Unit 1
Unit 2
Unit 1
Unit 2
Turns on for
cooling
Turns on for
heating
Outdoor fan
Defrosting inhibit period
Compressor
rotation speed
520
480
Unit 1
0
520
480
Unit 2
0
Defrosting signal
Defrosting request between
outdoor microcomputers
Unit 1
Unit 2
Unit 1
Unit 2
Unit 1
Unit 2
Turns on for
cooling
Turns on for
heating
Outdoor fan
Compressor
Defrosting inhibit period
rotation speed
520
480
Unit 1
0
520
480
Unit 2
0
¥ See other sections for datails of expansion valve TD control, Æ N correction and distribution control.
※
¥ TSKTM1, SDRCT1, DFSTEP, TDFSPT, DEFMAX, DFCTPS, DFSPPS, DFPSMX, PSTART and PCLOSH are EEPROM data.
(main unit 1: thermostat on/main unit 2: thermostat off/sub unit 1: thermostat off/sub unit 2: operation stop)
Ⅱ
15s
Balancing period of 90s
30s
Hold
Hold
30s
Hold
PCLOSH
Hold
Balancing period of 90s
Hold
30s
Hold
Hold
Defrosting request
Defrosting request
Reverse cycle period (max. 12 minutes)
¥Defrosting sequence
TSKTM1
DFSTEP min /
-1
TDFSPT sec.
SDRCT1
DFSPPS
pulse
DFCTPS
Defrosting request from main
Defrosting request
Reverse cycle period (max. 12 minutes)
¥Defrosting sequence
30s TSKTM1
DFSTEP min
-1
TDFSPT sec.
SDRCT1
DFSPPS
pulse
DFCTPS
Hold
152
30s
Balancing period of 90s
DEFMAX
DFPSMX
Balancing period of 90s
DEFMAX
/
DFPSMX
TSKTM1
SDRCT1
15s
PSTART
DFCTPS
PCLOSH
30s
15s
DFCTPS
PCLOSH