Condensate Pump; Troubleshooting; Protective Function - Fisher FSK-94HF Technical & Service Manual

Cassette type air-conditioner (one-way cassette)

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4.1.4 Water Level Alarm Lamp

When water level is above the alarm level, it will blink at 5Hz.

4.2 Timer

Refer to remote controller manual for detail operation.

Note: The timer is valid for one operation of the A/C.

4.3 Louver Action

It is controlled by relays.

4.4 Condensate Pump

4.4.1 The action of the water pump is controlled by water level switch.

4.4.2 Control procedures (check water level every 5 seconds )

4.4.2.1 When entering cooling mode, dehumidifying mode or forced cooling mode, condenser starts at once and

operates continue until the above modes stop.

4.4.2.2 Under stand-by, heating or fan mode, if the water level in water receiver rises to the position of the water

switch, the controller will make LED flashing to give warning signal, and at the same time forces compressor to

stop and the drain pump start. The water level will be checked continuously. If the water level falls to warning

water level, the warning signal will disappear( the drain pump delay 1 minute to be off), compressor starts again(3

minutes protection takes priority), and operation recovers according to former setting mode. On the other wise,

after 3 minutes, the whole unit stops(including drain pump) and warning signal can"t disappear. It can"t recover

unless out of power.

5. Trouble Shooting

5.1.1 3-minute delay for the compressor start-up.

At the beginning of energizing or after the stop of the compressor, 3-minute delay will be needed to start the

compressor.

When switchover between cooling/heating mode, the compressor stops automatically.

5.1.2 The AC don"t check the compressor current through electric control system, but use compressor self current

protection.

5.1.3 Evaporator protection against high temperature(heating mode)

Only available to heating mode, including heating mode, heating operation under auto mode.

※ Note: During protection, the indoor fan continues operating at a setting speed, while the anti-cold air function

of heating and the compressor will be 3 minute delayed to shut down for protection.

5.1.4 Evaporator Protection against low temperature(cooling mode)

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.

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