Hitachi RWM-(H)FSN3E, Service Manual

Page: 97 / 424

4 Electrical wiring
SMGB0070 rev.1 - 08/2011
87
4
4.2 Setting of DIP switches and RSW switches
4.2.1 Outdoor unit

Location of DIP switches and RSW switches
The PCB (see the electrical wiring diagram - plane a) in the outdoor unit is operated with different dip switches, rotary
switches and push switches.
Position switches at the PCB:
RAS-2HVRN2
RAS-(3-10)H(V)RNME-AF
PCB1 PCB2
SEG1
DSW6
DSW1
LED2
SW1
PSW2
PSW1
PSW3
DSW4
DSW3 RSW
LED1
DSW2
LED3
DSW5
JP1
JP6
N O T E
• The mark “■” indicates the position of dips switches.
• No mark “■” indicates pin position is not affecting.
• The figures show the settings before shipment or after selection.
C A U T I O N
Before setting dips switches, first turn the power source off and then set the position of the dips switches. In
case of setting the switches without turning the power source off, the contents of the setting are invalid.

Function of the of DIP switches and RSW switches
DSW1: Test Run
Function Setting position
Setting before shipment
1 2 3 4
Test run for cooling
1 2 3 4
Test run for heating
1 2 3 4
Forced stop of compressor (1)
The compressor is OFF during this operation.
1 2 3 4
N O T E
• It is possible to select the cancellation of the outdoor hot start control by pushing both PSW1 & PSW3 simul -
taneously during 3 seconds.
• This operation is reset once the compressor is in Thermo-ON mode.
• During the test run operation the units will operate continuously during 2 hours without Thermo-OFF and the
3-minute guard for compressor protection will be effective.