Fisher FSK-124HF - Page 26

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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 LED Flashing Remark
1 protection Over current protection of the compressor
occurs 4 times in 1h
Lamps of operation, timer,
defrosting (only fan )
flashing simultaneously at
5Hz.
Whole unit is shut down.
It cannot recover unless
power is cut off
2 protection Outdoor protection (absent phrase, phrase
sequence and temperature protection)
All lamps flashing at 5Hz
3 error Room temperature sensor checking channel
is abnormal
Timer lamp flashing at 5Hz
4 error Evaporator sensor checking channel is
abnormal
Operation lamp flashing at
5Hz
5 error Condenser sensor checking channel is
abnormal
Defrosting lamp flashing at
5Hz
6 error Temperature fuse is melt(reserved) Operation lamp and timer
lamp flashing at 5Hz
Recover automatically
after errors are
eliminated(For T3
malfunction can”t recover
automatically)
5.2.2 LEDs for the indication of outdoor trouble(3 phase type FSK-364HF FSK-484HF)
Type Contents LED1 LED2 LED3
Trouble Phase sequence Flash Off Off
Trouble Lack of phase Flash Off Off
Trouble Protection of pressure Flash Flash Off
Trouble Overload of current Off Off Flash
Trouble Open-circuit and short-circuit trouble of T3 Off Flash Flash
Trouble Open-circuit and short-circuit trouble of T4 Off Flash Off
Trouble High temperature protection of condenser Flash Flash Flash