Mitsubishi Electric MSZ-AH09VA-H1 Operating And Installing Instructions page 75

Inverter heat pump r410a
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Service cap
13.7 to 17.7
Shut off valve cap
19.6 to 29.4
4-3 Test run
MSZ model
Frequency conversion model
Before the test run,recheck if there is wrong connection.Wrong
connection may hinder normal operation or lead to fusing as
well as malfunction.
Perform the test run by emergency button.At the time of pressing
the button,the machine begins to operate in cooling mode
based on op-tional mode for 30 minutes.The thermostat will be
disabled within the 30 minutes.After the duration,the machine
starts emergency operation in cooling or heating mode at the
set temperature of 24℃.
Test run shall be performed in the following process.
Operation process
Press the emergency button.
Each time the button is pressed,switching is made in the
following sequence.
Emergency
Emergency
cooling
heating
※ No operation mode other than it can be run.
In the first 30 minutes,the temperature can't be adjusted and
the unit will run continuously.The fan speed is
<Display on the I FEEL
temperature display section>
Emergency
Emergency
cooling
heating
Caution:
·This is the indication in emergency operation mode.
Make sure to receive the signal from the remote controller
After pressing the
button of the remote controller,please
confirm whether there is beep from the indoor unit.Then press
the button again to turn off the unit.
Under the control of remote controller,the unit will
quit the emergency operation when receiving the
signal from the remote controller.
In order to protect the compressor,the outdoor unit will not be
·
enabled even if the air conditioner restarts three minutes after
stopping operation.
4-4 Notice for user information
Based on operating instructions,please describe the way to
·
adjust and control temperature,disassembly of air filter and
vertical vane,way of cleaning and precautions in operation.
5.Relocation and maintenance after installation
5-1 How to install front frame
Set the horizontal vane to position No. 3 (page 10) before
installing the front frame.
Insert the bottom side of front frame under the horizontal vane.
Fix the top of the front frame securely.
Press the agraffe of front frame and fix the front frame on the
air conditioner.
Tightening torque
N·m
kgf·cm
140 to 180
200 to 300
Shutdown
(High).
Emergency
operation switch
应急
运转
Operation
Mode
indicator
indicator
temperature
display section
5-2 Remove the indoor unit
Pull out the bottom part of indoor unit from the mounting plate.
Loosen two angles
As shown below,pull the left
and right corner part of indoor
unit downwards and forwards
and loosen the hook.
5-3 Supply of refrigerant
① Connect a gas bottle to the service port of stop valve (three way).
② Purge the pipe or hose using the refrigerant from the gas bottle.
③ Supply the refrigerant with specified amount during air conditioner
operation in cooling mode.
·During supply of the refrigerant,don't place the gas bottle
upside down,or problems may result.
Indoor unit
Refrigerant gas bottle valve
Refrigerant gas bottle
In order to keep high pressure in gas bottle,heat the bottle with
·
warm water (40℃) in cold weather.But don't heat it with fire or
I FEEL
steam.
Note:①
An indoor wiring diagram is stuck inside indoor unit
front panel.
Outdoor wiring diagram is stuck on outdoor unit
electrical control box.
5-4 How to reclaim refrigerant
Be sure to use a pressure gauge.
Enable a cooling operation first.
Then,close the valve (liquid valve) at high pressure side
completely with the readings of 0-0.05MPa (about 30-40s)
in pressure gauge,finally close the valve (gas valve) at low
pressure side to stop operation immediately.
You can't remove the connection pipe until you ensure the
closure of the two valves (liquid and gas) and power-off.
When pumping down the refrigerant,stop the compressor
·
before disconnecting the refrigerant pipes.
The compressor may burst if air etc. get into it.
Precautions
Connector
Stop valve
6.35
Outdoor
unit
9.52
Service port
Inflated hose
Spring balance
Inflation (R410A gas)
Warning
37

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