Mitsubishi Electric CITY MULTI PUHY-400YMF-C Service Handbook page 40

2 Constant Capacity Unit
Switch Function
SWU 1 ~ 2 Unit Address Setting
1 -
2 -
3 -
4 Ignore liquid level errors
5 -
SW2 6 -
7 Forced defrosting
8 -
9 -
10 -
1 -
2 -
3 Defrosting start tempera-
ture.
4 Defrosting end tempera-
ture.
SW3 5 Ignore oil-equalization
circuit irregularities
6 -
7 -
8 -
9 Models (Refrigerant)
10 Models (Capacity)
Note 1: Factory setting is SWU 1 to 2 = 00, SW3 - 10 = set by model. All other switches are set to OFF.
Note 2: If the address is set from 01 to 50, it automatically becomes 100.
Function According to Switch Operation
When Off
Set on 51 ~ 100 with the rotary switch.*2
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Ordinary control Ignore liquid level errors
-
-
Ordinary control Start forced defrosting.
-
-
-
-
-
– 8°C
7°C
Ordinary control Ignore oil-equalization
circuit irregularities
-
-
-
R22 Model
Model 200
-37-
When On When Off
Before power is turned on.
-
-
-
During normal operation when
power is on.
-
-
During normal
operation when
power is on.
-
-
-
-
-
– 10°C
During normal operation when
power is on.
12°C
During normal operation when power
is on. (Except during defrosting)
During normal operation when
power is on.
-
-
-
R407C Model
Before power is turned on.
Model 250
When switching on the power.
Switch Set Timing
When On
-
-
-
-
-
Invalid 2 hours
after compressor
starts.
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-
-
-
-
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