Function Of Dip Sw And Rotary Sw - Mitsubishi Electric CITY MULTI PQRY-P200YMF-B Service Handbook

[6] Function of Dip SW and Rotary SW

(1) Heat source unit
Switch Function
SWU 1~2 Unit address setting
SW1 1~8 For self diagnosis/
operation monitoring
9~10 –
SW2 1 Centralized control switch
2 Deletion of connection
information.
3 Deletion of error history.
4 Adjustment of refrigerant
Volume
5 –
6 –
7 Operation ON signal
output switching
Relay contact output
TB8-1,2
8
Disregard pump interlock
trouble.
–
9
–
10
SW3
SW3-2 Function valid/
1
invalid
Indoor unit test operation
2
CN51-3,5 Output switching
3
Freeze prevention operation
4
Target Te (α) at cooling-
5
only
Pump down operation
6
Target Tc (High pressure)
7
at heating
–
8
–
9
10
Models
SW4
1 SW4-2 function valid/
Invalid
2 Configuration compensa-
tion value
–
3
Note:
• SWU1~2=00 when shipped from the factory. Other factory settings are indicated by shaded portions.
• If the address is set from 01 to 50, it automatically becomes 100.
* Freeze prevention operation
When the water temp. (TH6) below less 5˚C during compressor is stopping, the compressor starts to run with cooling mode to
prevent the water freeze.
Function according to switch operation
When off
Set on 51~100 with the dial switch.
LED monitering display
–
Centralized control not Centralized control
connected. connected.
Storing of refrigeration Deletion of refrigeration
system connection system connection
information. information.
– Deletion
Ordinary control Refrigerant volume
adjustment operation.
–
–
The relay closes during The relay closes during
compressor operation. reception of the cooling or
the heating operation
signal from the controller.
(Note: It is output even if
the thermostat is OFF
(when the compressor is
stopped).)
Normal Disregard trouble
–
–
SW3-2 Function invalid SW3-2 Function valid
Stop all indoor units.
All indoor units test
operation ON.
Water heat exchanger Heat source unit abnormal
freeze prevention signal
output
Normal Freeze prevention operation*
–2˚C
Invalid
50˚C
–
–
Model P200
Invalid
Changes as shown below by on → off change
0% → 3% → 6% → 9% → 12% → –6% → –3% → 0%
–
–29–
When on When off
Before power is turned on.
During normal operation when power
is on.
– Should be set on OFF.
Before power is turned on.
Before power is turned on.
During normal operation when power
is on.
During normal
operation when
power is on.
–
–
At all times
At all times
–
–
During normal operation when power
is on.
When SW3-1 is ON after power is
turned on.
At all times
At all times
–5˚C At all times
Valid During Comp stop (only when power
changes from OFF → ON)
53˚C During normal operation when power
is on.
–
–
Model P250 When switching on the power.
Valid During normal operation when power
is on.
When SW4-1 in ON.
–
Switch set timing
When on
Invalid 2 hours
after compressor
starts.
–
–
–
–
–
–
–