Outdoor Unit - Fujitsu R407C Service Manual

2-3-3 OUTDOOR UNIT

DIP SWITCH SETTING
1. SW1 setting
1-1 Test run
By setting DIP SW1-1 and SW1-2 on control PC board of outdoor unit, cooling test run or heating test run for all the indoor
units in the same refrigerant system can be performed.
SELECTOR SWITCH FOR TEST RUN AND NORMAL OPERATION
SW1-2
OFF
OFF
ON
ON
1-2 Pump down operation
Pump down operation is set with SW1-3
PUMP DOWN OPERATION
SW1-3
OFF
ON
1-3 Forced defrost operation
FORCED DEFROST OPERATION
SW1-4
OFF
ON
2. SW2 setting
2-1 Silent operation mode (cooling mode only)
Noise level can be reduced using silent operation mode when the outdoor temperature decreases
decreases below 30 C.
SILENT OPERATION MODE
SW 2-1
OFF
ON
2-2 Snow falling protection fan mode
When snowing , to prevent the unit from being covered with snow , the outdoor fan is periodically
operated by this switch even when the compressor is stopped.
SNOW FALLING PROTECTION SW
SW2-2
OFF
ON
SW1-1 Test Run
OFF Normal operation
ON Cooling test run
OFF Heating test run
ON Normal operation
Pump down operation
Release
Operate
Forced defrost
Release
Operate
(
Silent operation mode
Release
Oparate
(
Snow falling protection fan mode
Release
Operate
[OFF,OFF] [OFF,ON] and be kept at
[OFF,ON] position for more than 1 min.
[OFF,OFF] [ON,OFF] and be kept at
[OFF,ON] position for more than 1 min.
( Factory setting)
Remarks
OFF ON and be kept at ON position
for more than 30 sec.
( Factory setting)
Remarks
OFF ON and be kept at ON position
for more than 10 sec.
Factory setting)
Factory setting)
02-19
( Factory setting)
Remarks