Fujitsu WPYA100LA Service Manual page 13

MONITOR DISPLAY METHOD
1. Switch " ON " the MODE SW. 4 on the unit PCB (DISPLAY).
The monitor number and monitor data are alternately displayed.
2. Push the PUMP SW. of the unit PCB (DISPLAY).
Every time the PUMP SW. is pressed the display changes in the sequence below.
3. Switch " OFF " the MODE SW. 4 after completing the check.
MODE SW.
1 2 3 4
Monitor display
CHARGE THE CIRCULATION WATER AND AIR PURGE IN WATER CIRCUIT
• When you push PUMP SW on display PCB, the water pump is started to
operate to circulate the water.
The each digital segment of right side on display PCB lights in sequence
during operating the pump.
• The pump is automatically stopped after operating for 10 minutes.
If it is not enough to let the air out of water circuit, please push PUMP SW
once again after the pump stopped.
When you would like to stop operating the pump before the pump is
automatically stopped, please push PUMP SW once again.
FREEZE PREVENTION SETTING
• If the outside temperature falls below about 2°C, freeze pre-
vention operation is possible depending on the unit MODE
SW. 1
OFF :
1.No freeze prevention operation (When using anti-
freeeze)
ON :
2. Freeze prevention operation (When the outdoor
temperature falls below about 2°C , the circulating
water is warmed and circulated.)
The factory setting is " ON : 2. Freeze prevention operation ".
• Monitor display contents
Monitor
d0
d1
d2
d3
d4
d5
PCB (DISPLAY)
d6
d7
d8
PUMP SW.
d9
TROUBLESHOOTING GUIDE
Monitor data display contents
Circulating water return temperature Units of 1°C
Compressor operating frequency
Discharge temperature
Power consumption value
Interface voltage
Ambient air temperature
External thermistor temperature
Suction temperature
Circulating water outgoing temperature Units of 1°C
– 13 –
Units of 1Hz
Units of 1°C
Units of 100W
Units of 0.1V
Units of 1°C
Units of 1°C
Units of 1°C
PUMP SW.
MODE SW. position
For1 For2
1 2 3 1 2 3
4
PCB(DISPLAY)
4