Heat Pump Mini VRF Outdoor Unit 6 720 862 440 (2016/04)
OPERATION AND PERFORMANCE | 5
• Communication problem:
Should the communication between units be lost, switch off the
electrical power supply to all indoor/outdoor units. Firstly re-instate
the power to the indoor units, then re-instate the power to the
outdoor unit.
4.3 Heating capacity
• If the outdoor ambient temperature decreases, then the output of
heat discharged from the indoor units will also decrease.
• In cold temperatures the unit will default to heating mode only.
NOTE
Should the electrical power supply be interrupted, the indoor units will run
for 20-30 seconds after to reject all of the heat built up.
4.4 Three-minute protection feature
• A protection feature prevents the air conditioning unit from being
activated for approximately 3 minuites when it restarts immediately
after operation.
4.5 Cooling and heating operation
• The indoor units must run in the same mode to stop conflicting errors.
All units must be selected in the same mode.
• When two different modes are selected the heating mode will take
priority. However if a priority mode has been set up, then this will take
priority. You can set a priority of ‚first unit turned on in the morning
is the master‘, ‚heating priority‘, ‚cooling priority‘ or ‚a single unit as
priority‘.
• If the Air conditioning unit has a running mode selected, then the air
conditioning unit can not run on modes other than the pre-set mode.
Standby or No Priority will show on the display.
4.6 Features of heating operation
• The fans inside the indoor units may stop periodically to avoid
discharging the incorrect temperature of air into the room. The
fans will start again once the unit has the sufficient temperature to
discharge. This will also be apparent for the first 3-5 minutes from
when the unit is first turned on.
• During operation, the fan motor in the outdoor unit may stop running
under high temperatures.
• When one unit is selected in fan mode and others are heating, the fan
may stop to prevent hot air being moved around.
4.7 Defrost in the heating operation
• During heating operation, frost can accumulate on the outdoor unit.
To increase efficiency, the unit will start defrosting for approximately
2-10 minutes depending on the amount of accumulated frost. The
frost will then thaw and drip away from the unit.
• During defrosting outdoor unit and indoor unit fans will periodically
stop.
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