Fujitsu R407C Service Manual page 32

2-3 Expansion valve initialization
This switch initializes the number of pulses of the expansion valve when the outdoor unit is stopped.
ELECTRONIC EXPANSION VALVE INITIALIZATION
SW2-3
OFF
ON
2-4 Forced oil recoverry operation.
Oil recovery is started manually by DIP SW 2-4 on the PCB.
FORCED OIL RECOVERY
SW2-4
OFF
ON
3. SW3 setting
Dip SW3-1,3-2,3-3 and SW3-4 setting forbidden
SW3-1
SW3-2
SW3-3
SW3-4
4.SW4 setting
4-1 Defrost temperature setting SW
The thershold temperature for starting a defrosting operation can be selected by setting up the switches.
DEFROST TEMPERATURE
SW4-2
OFF
OFF
ON
ON
4-2 Dip SW4-3 and SW4-4 setting forbidden.
SW4-3
SW4-4
5. SW5 setting
5-1 Dip SW 5-1,SW5-2 and SW5-4 setting forbidden
5-2 Base heater validity/invalidity
This switch sets the output of the base heater (CN5) on the PCB.
BASE HEATER SWITCH
SW5-3
OFF
ON
The base heater output turns ON at an outside temperature of 2 C or less
during heating operation.
Base heater : 220-240V AC , 35W , field supplied.
Initialization
Release
Operate
Forced oil recovery
Release
Operate
OFF
OFF
OFF
OFF
(
Temperature
SW4-1
OFF
Standard
Low
ON
OFF
High
Lower
ON
OFF
OFF
( Factory setting)
Base heater
Invalidity
validity
02-20
( Factory setting)
(
Remarks
OFF ON and be kept at ON position
for more than 10 seconds
Factory setting)
Factory setting)