Section 2. Test Run; Precautions Regarding Test Run - Panasonic S-45PU1E5 Technical Data & Service Manual

PRECAUTIONS REGARDING TEST RUN

Check Before Test Run
Power supply cable
Indoor/outdoor connection wire
Earth wire
Refrigerant pipe
Always be sure to use a properly insulated tool to operate the short-circuit pin on the circuit board. (Do not use your fi nger.)
Never switch the power supply ON until the installation has completed.
Supply electrical current through all indoor units and check the voltage.
Supply electrical current through all the outdoor units and check each inter-phase voltage.
Before the test run, ensure to check that the 3-way valve is open. Operating while the valve is closed causes the compressor
to fail.
Test Run Procedure
If there are duplicated system addresses, or if the settings for the Nos. of the indoor units are not consistent, an alarm will
occur and the system will not start.
Switch on both indoor and outdoor unit.
Short-circuit CHK pin on the outdoor main PCB.
Do not remove CHK pin until test run is completed.
Removing CHK pin stops test run.
Short-circuit RUN pin on the outdoor main PCB for one second or longer.
Factory setting is cooling operation mode and cooling operation test run starts.
If heating operation starts, short-circuit both right side and centre of the MODE pin (centre and COOL) for one second or
longer.
Ensure to conduct a test run. In addition, be sure to run the cooling operation test run for at least 20 minutes before starting
the heating operation test run.
To conduct heating operation test run, short-circuit left side and centre of the MODE pin (centre and HEAT) for one second
or longer.
Removing CHK pin's short-circuit stops test run.
For the test run using remote control unit, please see installation manual included with the remote control unit.
Is the wire set up and connected as described in the instructions? Check for any phase
sequence.
Are the wire connection's screws loose?
Is the open and close device / leakage breaker installed?
Is the power supply cable's thickness and length appropriately measured as described
in the instructions?
Is it earthed (grounded)?
Check that the insulation resistant value is more than 1 M .
Use the 500 V mega-testers to measure the insulation.
Do not use the mega-tester for any other circuit except for voltage of 220 V to 240 V.
Are the wire connections for the indoor/outdoor units connected as described in the
instructions? Are there any looped wires?
Is the piping installed as described in the instructions?
Are the pipes sizes appropriate?
Does the pipe's length adhere to the specifi cations?
Is the branch pipe slant being appropriately done as described in the instructions?
Was vacuum removal suffi ciently carried out?
Was the leak tightness test carried out with nitrogen gas? Use the testing pressure of
3.8 MPa.
Is the piping insulation material appropriately installed? (Insulation material is necessary
for both gas and liquid piping.)
Is the 3-way valve for the liquid side and gas side open?
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