Daikin SKYAIR, Руководство по обслуживанию

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Function & Control
14
2.7 ON/OFF Function on Indoor Unit
ON/OFF button on the Indoor unit can be use to trigger the unit to ON or OFF. When the button is pressed,
the system mode setting will rotate in the following sequence,
OFF
->
COOL
->
HEAT
->
OFF
2.8 Water Pump Control
Water pump* will on when the compressor start during Cooling cycle. The water pump will remain on for at
least 5 minutes after the compressor is off.
During change of mode from cooling modes to Non-Cooling modes, the water pump will remain on for at
least 5 minutes.
During Defrost cycle, the water pump will continue ON. Once the Defrost cycle is terminated, the water pump
will run at least 5 minutes.
2.9 Water Level Switch Detection
The switch is a Normally Closed switch. The switch is used to detect fault in water pump system. It will need
30 seconds to con
fi rm the switch is “OPEN” and 60 seconds to con fi rm the switch is “CLOSE”.
• If the switch con fi rms OPEN, it will force compressor to cut off.
• If the switch is closed for 5 minutes, the compressor will be allowed to cut in.
• If the switch remains open for more than 5 minutes, the system will trigger error and the compressor is not
allowed to cut in.
Refer chart below for the overall water pump and water level switch mechanism.
Water level of
float switch
Open
Close
Thermostat
[COOL]
ON
OFF
Drain pump
operation
ON
OFF
30s
Error E6
triggered
Comp
thermo cut
off
60s
5mins
2.10 Indoor Coil Freeze Prevention
Only available in cooling mode.
When the indoor coil temperature < 2°C, the compressor starts to drop the frequency.
This protection will cut in when:
• Indoor coil temperature < 0°C for more than 180s.
Compressor will stop, Outdoor fan stop after 30s and indoor fan can only run at lowest fan speed.
The unit can only be restarted after 3 minutes.
When the indoor coil temperature > 13°C, the compressor frequency will be reset based on the Outdoor
ambient, room and set temperature.