Trial Operation - Haier AB072FDAHA Installation Manual

Indoor unit installation
* Caution
To enable normal discharge of water, use drainpipes according to the installation manual. To
avoid forming of dewdrops, it must be treated for heat isolation. Inappropriate tubing may
lead to water leakage in the room.
Requirements:
The indoor drainpipe should be treated for heat isolation.
The indoor connections must have heat isolation. Inappropriate isolation may lead to
dew forming.
The drainpipe must have a falling gradient (above 1/100) and should not be made into
an ì Sî form, otherwise, it will produce noises.
The horizontal length of the pipe should be shorter than 20m. If the pipe is long, one
support should be set up for every 1.5-2m. Avoid undulation of the pipe.
Centralized piping is installed according to the following diagram.
Never apply external forces on the connections of the drainpipe.
1.
support
5m ~2m
"S" shaped pipe
isolation falling gradient
material
above 1/100
Pipe material and isolation material
Unit attached parts:
Pipe material Hard PVC pipe 31.5mm (inner diameter)
Isolation material Foam polyethylene thickness above 10mm
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Trial operation

Before operation
Before the unit is turned on, test the resistance between the power block terminal (L, N terminals) and
the earth.If it is below 1M , it can't allowed running.
Turn on the outdoor unit. To protect the compressor during start-up, it should be switched on 12 hours
in advance.
Never operate the electromagnetic contactor manually for forced trial run. (It is dangerous when the
protection device does not work.)
Trial operation
Refer to the service manual for the running procedure.
When the unit fails to start under room temperature, try forced trial run by the following steps.
Cooling mode
Set the running mode to ì Coolî
Press the ON/OFF button till an ì Lî blinks at the ì Setting Tempî area on the wire
as large as possible(about 10 cm)
controller LCD and ì Autoî is displayed at the fan speed area. Now the unit enters
into cooling trial run.
VP30
falling
gradient
(above 1/100)
Heating mode
Set the running mode to ì Heatî
Press the ON/OFF button till a blinking ì Hî and an ì Autoî sign appear on the wire controller. Now
the unit enters into heating trial run.
During forced trial run, working modes cannot be changed through the wire controller.
After trial run, press the ON/OFF button to stop the unit.
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