Panasonic Cs W18bd3n Cs W24bd3n Cs W28bd3n Series Repair Manual

Function Automatic address resetting fortwinsystem s
 
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This clears the current twin addresses which have been set automatically , and causes automatic twin address setting to be
carried out once more.
Procedure:Press the ADDRESS RESET switch SW3 (push button switch) on the outdoor unit circuit board continuously until LEDs 2 to 8 on
the outdoor unit circuit board are all illuminated (takes approx. 3.5 seconds).
Operation:The outdoor unit will reset the addresses for the indoor units which...

 
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The branch pipe should be horizon tal to or perpendicular to the indoor unit.
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Installing branch pipes
17.3. Refrigerant charging
 
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For twin systems
The pipe length is the total of the branch pipe (L) and the junction pipes (Ia→
tIb→
t Ic in order from the thickest diameter). At
the point where the pipe length exceed s 30 m, determine the amoun t of refrigerant for the remaining liquid-side pipe diameters
and pipe lengths from the following table in order to charge...

17.4. Wiring
Whenboth indoor and outdoor unit draw power
(Example: 3 Phase power supply model)
When only theoutdoor unit draws power
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18 WIRING MISTAKE PREVENTION
Improved quality of installation work through adoption of an “Connection error prevention” circuitwhichpreven ts wiring
mistakes
Conne ction errors with the control wires and the power supply wires will not only contribute to burning-out of the control circuit
board, but can also cause large-scale working losses and affect reliability. If a circuit board with a “Connection error prevention”
circuit is used, the relay will not operate if the wires have been connected...

19.1. 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...

19.3. Test operation using the wired remote control
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Self-diagnosis error code table
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20 SETTING OF SAVE ENERGY AND THERMISTOR SWITCH
20.1. 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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21 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...