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Trial operation and the performance
When power failure
Heating capacity
System marks
Trial operation
When power is failure in running, all the operations will stop.
After being electried again, if with re-satrt up function, the unit can resume to the state before
power off automatically; if without re-satrt up function, the unit needs to be switched on again.
When abnormal occurs in running because of the thunder, the lightning, the interference of
car or radio, etc, please cut off the power source, after eliminating the failure, press "ON/OFF"
button to start up the unit.
The heating mode adopts the heat pump type that absorbs outdoor heat energy and releases
into indoor. So if outdoor temperature goes down, the heating capacity will decrease.
On the condition that multi VRF systems are installed, in order to conrm the relationship
between outdoor and indoor, please make marks on outdoor electric control box cover to indicate
the connected indoor unit. As the below gure:
Before trial operation:
Before being energize, measure the resistor between power terminal block (live wire and
neutral wire) and the earthed point with a multimeter, and check if it is over 1M * . If not, the
unit can not operate.
To protect compressor, energize the outdoor unit for at least 12 hours before the unit runs.If
the crankcase heater is not energize for 6 hours, the compressor will not work.
Conrm the compressor bottom getting hot.
Except for the condition that there is only one master unit connected (no slave unit), under the
other conditions, open fully the outdoor operating valves (gas side, liquid side). If operating the
unit without opening the valves, compressor failure will occur.
Conrm all indoor units being electried. If not, water leakage will occur.
Measure the system pressure with pressure gauge, at the same time, operate the unit.
Trial operation
In trial operation, refer to the information of performance section. When the unit can not start
up at the room temperature, make trial operation for outdoor.
Room No.
e.g. Indoor A, system 1, Floor 2 2F-1A
indoor model:
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