Mitsubishi SRR60ZJ-S, Service Manual

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38
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'10 • SCM-SM-094
'09•SRK-DB-087D
(11) Compressor overheat protection
(a) Purpose:
(b) Detail of operation
1)
Discharge pipe temperature (˚C)
(Example) Fuzzy
95 105 115
2)
(12) Current safe
(a) Purpose:
(b) Detail of operation:
Cooling Heating
Lower limit speed
Item
Model
3 minutes
3 minutes
3 minutes
105 115
95 105
95 105
3 minutes
3 minutes
115
40 ~ 50
60 ~ 80 32 rps 32 rps
32 rps 25 rps
(13) Current cut
(a) Purpose:
(b) Detail of operation:
(14) Outdoor unit failure
(15) Indoor fan motor protection (Refer to the FDTC series by 23 page)
compressor command
(SRF:150)
300
h
(16) Discharge pipe sensor disconnection protection control
(a)
When the compressor command speed is other than 0 rps.
1) Th3(10)-Th3(0) < 8 °C, and Th3(10)-Th2(10) < 5 °C
The compressor command speed is set on A rps for 5 minutes. After 5 minutes, the compressor command speed is set
on B rps for 5 minutes.
2) Th3(20)-Th3(15) < 5 °C :
The compressor command speed is set on 0 rps.
(b) Once the unit is stopped by this function, it is not restarted.
Notes (1) Th3(X): After compressor operation, the discharge pipe sensor temperature after X minutes.
(2) Th2(X): After compressor operation, the outdoor air sensor temperature after X minutes.
(17) Regulation of outdoor air flow
• Values of A, B
Model
A
B
30 rps
60 rps
SCM40ZJ-S
30 rps
60 rps
SCM45ZJ-S
30 rps
60 rps
SCM50ZJ-S
20 rps
60 rps
SCM60ZJ-S
20 rps
60 rps
SCM80ZJ-S
20 rps
60 rps
SCM71ZJ-S
(a) The fan operates as follows according to the compressor command speed. (Except during defrost.)
Cooling Heating
Compressor speed (rps) Less than 31
More than 66
85 or more
but 85 or less
Outdoor fan speed 6th speed 5th speed
More than 31
but 66 or less
4th speed 3rd speed
Less than 31
More than 46
66 or more
but 66 or less
6th speed 5th speed
More than 31
but 46 or less
4th speed 3rd speed
Cooling Heating
Compressor speed (rps)
Outdoor fan speed
Model 40: Less than 40
Model 45: Less than 40
Model 50: Less than 48
Model 60: Less than 48
Model 40: 40 or more
Model 45: 40 or more
Model 50: 48 or more
Model 60: 48or more
Model 40: Less than 56
Model 45: Less than 56
Model 50: Less than 61
Model 60: Less than 61
Model 40: 56 or more
Model 45: 56 or more
Model 50: 61 or more
Model 60: 61 or more
6th speed 5th speed 6th speed 5th speed
SCM71, 80 ZJ-S
SCM40~60ZJ-S
(b)
If the outdoor unit’s fan speed drops, the outdoor fan is run for 1 minute at that speed.
2) Control value
Model
Current safe
①
Current safe
②
Current safe
③
Cooling Heating Cooling Heating Cooling Heating
SCM 40, 45, 50ZJ - S 10.0 12.0 10.0 10.0 7.5 7.5
SCM 60ZJ - S 11.0 14.0 10.0 10.0 7.5 7.5
SCM 71, 80ZJ - S 13.0 16.0 10.0 10.0 7.5 7.5
Unit: A