Panasonic Cu W18bbp5 Cu 24bbp5 Cu W34bbp8 Cu W43bbp8 Series Repair Manual

20.1. Test operation
 
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Always be sure to use a properly-insu lated tool to operate
the switch on the circuit board. (Do not use your finger or a
metallic object).
 
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Never turn on the power supply until all installa tion work has
been completed.
 
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Turn on the circuit breaker before test operation extends
past 6 hours.
(The crankcase heater will become energized, which will
warm the compressor and prevent liquid compression.)
 
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For three-phase...

20.3. Test operation using the wired remote control
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Self-diagnosis error code table
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21 SETTING OF SAVE ENERGY AND THERMISTOR SWITCH
21.1. Energy save setting
Open the cover remote control unit and confirm the presence of the [ RP1] marking.
Energy save setting method should be different for with [ RP1] marking and without [RP1] marking.
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22 GROUP CONTROL
1 Setting group for 1 remote control unit
 
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W hen using a remote control thermostat, the thermostat setting is used for all indoor units in the group.
 
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During group control, up to a maximum of 16 indoor units can be connected. (Do not mix heat pump units and cooling only
units.)
 
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Do not mix manua l settings and automatic settings. (Manual settings take priority.)
 
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The master unit and slave units can all be centrally...

If test operation does not proceed correctly
Carry out test operation after approximately 6 hours have passed
since the power was turned on (crankcase heater is energized). If
operation is started by using the remote control within 1 minute of
turning on the power, the outdoor unit settings will not be made
correctly and correct operation will not be possible.
If the following symptoms occur after turning on the power,
check the wiring connections once more.
 
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For standard installation...

 1. The main power is turned on while the transmission
wires between the indoor unit(s) are not connected
(open circuit at section A)
Symptom:
Nothing abnormal appears on the remote control
display . If operation is then started in this condition, the
combination of the 43BB outdoo r unit and the 40U
indoor unit (master unit) will cause abnormal operation
to occur.
↓
If operation continues, an abnormality will occur on the
refrigeration cycle and operation will stop.
 
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Remote control. . ....

 1. The main power is turned on while the transmission
wires between the indoor unit and the outdoor unit are
not connected (open circuit at section A).
Symptom:
Operation of indoor unit No. 1 and indoor unit No. 3 is
possible.
However, “CHECK” flashes in the remote control unit
display for 3-5 minutes after the main power is turned
on.
 
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Remote control. . . “CHECK” flashes.
 
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Indoor unit No. 2 . . . LED2 on the printed circuit
board flashes (both master and slave units)....

 1. Automatic address setting (no need to have dip-switch set)
If the wiring connected properly as above example, the address is set automatically by the main powersupply. An indoor unit
with remote control will be set as the master. If the power source is installe d to indoor units and outdoor separately, turn on the
switch as the following procedure: outdoo r unit, indoor unit with control, and other indoor units.
When theslave units do not operate (when address cannot be set)
Important: The address...