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43
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(9) Pump-down operation by external input
If an error stop is raised by an external input by refrigerant leaking alarm unit, the pump-down operation is performed at the
outdoor unit side in order to prevent the refrigerant from leaking.
They are local arrangements.
①
Refrigerant leaking alarm unit
②
Valve to shut liquid pipe
③
Valve to shut gas pipe
Valves of
②and③shouldbeselectedwhatthepressurelossofrefrigerantpipingdoesn’tincrease.
(a) Status 1: Pump-down operation
(i) Starting condition
①
When the external input function is assigned to “0: External operation input” and the external input terminal is
open (by refrigerant leaking alarm unit).
②
If the pump-down control is valid when the error stop is raised by the setting on 7-segment. ([P19] = “1”)
(ii) Contents of control
①
ON is output on CnY, and the liquid service valve is shut down if it is connected on CnY.
②
The pump-down operation for replacement is performed.
(iii) Ending condition
①
When starting conditions are lost.
②
When the pump-down operation has ended.
(b) Status 2: Emergency stop operation
(i) Starting condition
①
When the pump-down operation has ended in the status 1.
(ii) Contents of control
①
ON is output to CnZ1, and the gas service valve is shut down if it is connected on CnZ1.
②
Operation stops with the error full stop. ([E63] is displayed.)
(iii) Ending tion
①
When starting conditions for the status 1 are lost.
②
State of error continues for 3 minutes after the error full stop. It cannot be reset in this condition from the remote
control. If the starting conditions for Status 1 are not yet established later, this can be reset by the remote control
inspection reset.
6. New funcons
1
Pump down external input
Emergency call =>
External operaon input : Opened
Alarm unit
Gas leakage
Pump down
operaon
Activate by 7SEG:[P19]=“1”
E63
<==
'14 • KX-SM-202