Checking Rotary Switch And Dip Switch Settings - Hitachi mini-HNRQ1 Series Service Manual

TROUBLESHOOTING

1.3 Checking Rotary Switch and DIP Switch Settings

(1) Outdoor Unit (Factory setting)
The following diagram indicates the factory settings of DSWs on PCBs in the outdoor units.
Turn OFF all power sources before performing settings. DIP switch settings cannot be changed without first
disconnecting from the power source. (Except the DIP switch setting for test run.)
The darkened square "■" indicates the position of DIP switches.
● By using switch DSW1, the unit will start in in 1 minute after the switch adjustment is made.
● To simplify service and maintenance, number this outdoor unit to help distinguish it from the other
outdoor units.
Record the unit number in the right of the electrical box.
DSW1
DSW2
Test Run
Setting is required. For Test Run
Setting before
Shipment
Function Setting
Setting is required.
Setting before
Shipment
Setting Item
Test Cooling Operation
Test Heating Operation
No setting is required
Compressor Forced Stop
and Function Setting
Setting item
No setting is required
Function Setting
External Input/Output Setting
54
Pin No.
1
1,2
3
4
Pin No.
1
2
3
4
5
6