Function Of Connectors And Switches; Special Function; Low-Level Sound Priority Mode; On Demand Control - Mitsubishi Electric PUHZ-P100VHA2 Service Manual

(2) Function of connectors and switches

Connector
Types
Switch
Connector CN31
SW6-1
SW6-2
SW6-3
SW6-4
SW6
SW5-6
SW6-5
SW6-6
SW6-7
SW6-8
SW5-6

Special function

(a) Low-level sound priority mode (Local wiring)
Unit enters into Low-level sound priority mode by external signal input setting.
Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual.
Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for demand
input located on the outdoor controller board enables to control compressor operation frequency.
* The performance depends on the load of conditioned outdoor temperature.
How to wire
<Low-level sound priority mode circuit>
Insulate this point securely as
this is not used.
Purchased locally
Relay
supply
~
SW1
X
SW1 : Switch
X : Relay (Contact spec. : DC1mA)
1) Make the circuit as shown above with Adaptor for external signal input (PAC-SC36NA).
2) Turn SW1 to on for Low-level sound priority mode.
Turn SW1 to off to release Low-level sound priority mode and normal operation.
(b) On demand control (Local wiring)
Demand control is available by external input. In this mode, power consumption is decreased within the range of usual
0~100%.
How to wire
Basically, the wiring is same with (a).
Connect an SW 1 which is procured at field to the between Orange and Red (1 and 3) of the Adaptor for external signal input
(PAC-SC36NA), and insulate the tip of the brown lead wire.
It is possible to set it to the following power consumption (compared with ratings) by setting the SW7-1, 2.
Power consumption
SW7-1 SW7-2
(SW1 on)
OFF OFF 0% (Operation stop)
ON OFF
OFF ON
OCH415G
Function
Emergency operation
The black square (
Service Ref.
100VHA2
100VHA3(R1)
125VHA2
125VHA3(R1)
140VHA2
140VHA3(R1)
Model select
100VHA3R2
125VHA3R2
125VHA3R3
140VHA3R2
140VHA3R3
100VHA4
X
Max. 10 m including local wiring
50%
75%
Action by open/short operation
Short
Start
■
) indicates a switch position.
SW5-6 SW6
ON ON
(1)
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
ON
ON
(1)
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
ON ON
(1)
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
ON ON
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
ON ON
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
ON ON
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
ON ON
OFF OFF
1 2 3 4 5 6 1 2 3 4 5 6
Adaptor for external
signal input
Outdoor unit
(PAC-SC36NA)
controller board
Red 3
Brown 2
Orange 1
CNDM
90
Effective timing
Open
When power supply ON
Normal
Service Ref. SW5-6
ON
100YHA
OFF
1 2 3 4 5 6
7 8
ON
125YHA
OFF
7 8 1 2 3 4 5 6
ON
140YHA
OFF
1 2 3 4 5 6
7 8
ON
100YHAR1
OFF
1 2 3 4 5 6
7 8
ON
125YHAR1
OFF
125YHAR2
1 2 3 4 5 6
7 8
ON
140YHAR1
OFF
140YHAR2
7 8 1 2 3 4 5 6
100YHA2 ON
OFF
100YHA2R1
7 8 1 2 3 4 5 6
SW6
ON
OFF
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6 7 8
ON
OFF
1 2 3 4 5 6 7 8