Fisher FSK-124HF Technical & Service Manual page 26

5.1.4.1 When the evaporator pipe temperature ≤ 3°c and this lasts for 3 minutes, the compressor and outdoor fan
will be shut off.
5.1.4.2 When the evaporator pipe temperature ≥ 7°c, it recovers.
5.1.4.3 The restart of the compressor shall execute the delay protection.
5.1.5 Anti-cold air protection
Only available to heating mode, including heating mode, heating operation under auto mode.
5.1.6 Condenser high temperature protection
5.1.6.1Only available to cooling (incl. cooling mode, cooling operation under auto mode) and dehumidifying
mode.
5.1.6.2Delay protection should be performed when the compressor restarts.
5.1.7 Water level protection
5.1.8 Outdoor protection
When outdoor protection signal is high level, outdoor unit will perform protection: the whole machine will
be shut down while the LED will indicate the corresponding protection signal.
The A/C will recover if outdoor errors are eliminated after the outdoor protection occurs.
Only FSK-244HF has outdoor protection function.
5.2 Self-diagnosis
5.2.1 Indoor unit
No. Type Contents
1 protection Over current protection of the compressor
occurs 4 times in 1h
2 protection Outdoor protection (absent phrase, phrase
sequence and temperature protection)
3 error Room temperature sensor checking channel
is abnormal
4 error Evaporator sensor checking channel is
abnormal
5 error Condenser sensor checking channel is
abnormal
6 error Temperature fuse is melt(reserved)
5.2.2 LEDs for the indication of outdoor trouble(3 phase type FSK-364HF FSK-484HF)
Type
Trouble Phase sequence
Trouble Lack of phase
Trouble Protection of pressure
Trouble Overload of current
Trouble Open-circuit and short-circuit trouble of T3
Trouble Open-circuit and short-circuit trouble of T4
Trouble High temperature protection of condenser
Contents
- 25 -
LED Flashing
Lamps of operation, timer,
defrosting (only fan
flashing simultaneously at
5Hz.
All lamps flashing at 5Hz
Timer lamp flashing at 5Hz
Operation lamp flashing at
5Hz
Defrosting lamp flashing at
5Hz
Operation lamp and timer
lamp flashing at 5Hz
LED1
Flash
Flash
Flash
Off
Off
Off
Flash
Remark
Whole unit is shut down.
) It cannot recover unless
power is cut off
Recover automatically
after errors
eliminated(For
malfunction can"t recover
automatically)
LED2 LED3
Off Off
Off Off
Flash Off
Off Flash
Flash Flash
Flash Off
Flash Flash
are
T3