Humidifier Control; Fan Indication - Mitsubishi Electric PVFY-P12 Service Manual

7. Humidifier control

1. Control specifications and DIP S/W setting
The below table shows how the field installed humidifier and fan speed is controlled.
DIP switch Humidistat Condition (no defrost/no error)
setting output
SW1 6 CNF input
OFF OFF Heat operation & Thermo OFF
Heat operation & Thermo ON
ON Heat operation & Thermo OFF
Heat operation & Thermo ON
ON OFF Heat operation & Thermo OFF
Heat operation & Thermo ON
ON Heat operation & Thermo OFF
Heat operation & Thermo ON
- - Except for heat operation
RC:Remote controller
The fan continues to run for 30 seconds after the humidifier stops.
2. Installation
A basic connection method is shown below.
XA
SVA
Humidifier
On-site preparation
Maximum cable length is 10m(32ft)

7. Fan indication

1. Indication specifications
The below table shows how the fan indication is controlled.
Condition CNEC2 output
Fan speed
Relay on the board
Very low X11
Low X12
Middle X13
High X14
2. Installation
A basic connection method is shown below.
Very low
XF1
XF2
Low
XF3
Middle
High
XF4
COM
On-site preparation
Maximum cable length is 10m(32ft)
Specifications are subject to change without notice.
CN25 output
OFF
OFF
ON
OFF
ON
OFF
Indoor unit
control board
CN25
XA
CNF
Humidistat
Use XA relay having following specifications
Humidistat:Minimum applicable load 1mA at DC
No. of CNEC2
1
2
3
4
Indoor unit power board
CNEC2
1
1
2
2
3
3
4
4
5
5
XF1,2,3,4 power source: DC30V, 1A or less,
Fan speed
RC setting
RC setting
High
RC setting
High
RC setting
Rated voltage:12VDC
Power consumption:1W or less
Contact rating voltage:15VDC or more
Contact rating current:0.1A or more
X11
X12
X13
X14
AC230V, 1A or less
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