Auto-Fresh Defrost; Start Conditions For Auto-Fresh; Release Condition Of Auto-Fresh; Outputs During Auto-Fresh - Hitachi RAM-71QH5 Service Manual

Unit 1
Heating
Unit 2
Heating
Unit 3
Unit 4
Defrosting signal
Unit 1
Unit 2
Unit 3
Unit 4
Turns on
for heating
Outdoor fan
Auto-fresh inhibit period 15min
Target speed
Compressor
rotation speed
2 rooms
operation
480
0
480
0
480
0
480
0
15 sec
Balancing period [TDF414]
Target speed
1 room operation
Hold
Hold
Hold
Hold
– 45 –
Defrost request
30 sec
Reversing cycle period (max[DFMXTM])
Defrosting sequence
[TSKTM2]
[DFSTEP]min
[SDRCT2]
/[TDFSPT] sec
[DFCTPS$]
[DFSPPS$] pulse/[TDFSPT] sec
0 Pulse
0 Pulse
0 Pulse
MODEL RAM-71QH5
Balancing request
Balancing request
Balancing request
Balancing request
Balancing period 3 min.
[DEFMAX]
—1
[T_TEISI_OPEN]
Hold
[DFPSMX$]
Hold
Hold
Hold