Heating Mode - Fisher FSK-94HF Technical & Service Manual

Cassette type air-conditioner (one-way cassette)
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temperature setting and environment temperature) and will be automatically switched over to manual
mode 30 minutes later, under which manual mode will be in effective.
3.1.2.3 Under this mode, the buzzer will buzz twice with each lasting 0.5 second at 0.5 interval. During the first
30 minutes of unconditional forced cooling operation, the operation indicator will blink at 0.5Hz. In the
process of switchover to manual action mode, the buzzer buzzes for 0.5 second and the indicator is
illuminated.
3.1.2.4 Under this mode, the corresponding protections are in effective (3- minute delayed start-up, over current,
outdoor protection and evaporator low temperature protection.). Corresponding protection will act once
any protection is in active.
Push "manual" pad once to end this mode and enter the remote control pending status. The buzzer will
buzz for 1 second and the indicator turn off.
3.1.3 Manual Action
3.1.3.1 Under this mode, the remote signal will be received and corresponding actions will be taken accordingly
upon the receipt of the remote signal.
3.1.3.2 On entering this mode, the buzzer will buzz for 0.5 second and the indicator on.
3.1.3.3 The system will operate under the auto mode whose temperature is set to be 24°C and at the same time,
the wind grille will swing automatically.
3.1.3.4 Under this mode, corresponding protections are in effective.
3.1.3.5 Push " manual" pad to end this mode and switch over to manual cooling mode.

3.2 Heating Mode

3.2.1 Four-way valve opens at once, while defrosting process closes.
3.2.2 Condition for the compressor action: (Ts = set temperature, Ta = room temperature)
Room temp. up
Room temp. down
3.2.3 Indoor Fan Action
3.2.3.1 Anytime remote switchover for fan speed among high/low/auto(anti-cold air function takes priority).
3.2.3.2 Anti-cold air:
Switchover between fan speed and fine tune can be set according to temperature of evaporator pipe.
Indoor exchanger temp. up
Indoor exchanger temp. down
During anti-cold air period, if indoor fan is shut down, then pre-heating/defrosting lamp is on. Once indoor
fan starts, pre-heating/defrosting lamp will be off.
Condition
Compressor
Ta
Off
> Ts+4
Ta
On
<Ts+4
Ta
On
< Ts+3
Ta
Off
>Ts+3
Condition
T= Indoor exchanger temp.
T<25°C
25°C <T<32°C
T>32°C
T> 30°C
15°C <T<30°C
T<15°C
11
Outdoor fan
Off
On
On
Off
Indoor fan speed
Off
Breeze
Setting fan speed
Setting fan speed
Breeze
Off

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