PACD011001C2 Interface Adaptor
Appendix 601
∗
If demand controlling using input B:
∗
Forced thermostat OFF command
Forces indoor unit to run the fan only.
∗
Forced temperature shift
Raises preset temperature 2°C when cooling, and lowers 2°C when heating.
Note:
For zone control, because the units run when RY1 is ON and go off when RY1 is OFF, when in the last
command priority mode, some units remain off during operation. At this time even if input A is ON,
operation goes off and all units stop running.
D) If operating by two inputs using instantaneous input for input A and B (Use instantaneous input of min.
200 msec ON time.):
Note:
With positions 7~A, if constant input is used there is a forced OFF function (input A disregarded). With
position B, constant input cannot be used for input B.
Display Signal
Fetch
Normal operation output terminals (W1, W2) and malfunction output terminals (W3, W4) are no voltage,
constant contact output.
(Allowable current is 10 mA~3 A per contact.)
Output for each system is as given in the table below.
Position Function of input A Function of input B
C Remote controller inhibit
(Same as position 5)
Forced thermostat OFF command
D Forced temperature shift
E Individual (Same as
position 6)
Forced thermostat OFF command
F Forced temperature shift
Position Function Contents of input A when ON Contents of input B when ON
7 Remote controller inhibit ON (remote controller normally
inhibited)
OFF + remote controller inhibited
8 Centralised priority ON + remote controller enabled
9 OFF by remote controller
enabled
ON + OFF by remote controller only
enabled (ON by remote controller
inhibited)
A Remote controller
enabled / OFF
Remote controller only enabled (ON by
remote controller inhibited)
B Individual ON (remote controller normally enabled) OFF (remote controller normally
enabled)
Output Both RY1 and RY2 OFF Only RY1 ON Only RY2 ON
System
Individual control
or individual
display
OFF Normal operation Stop due to malfunction or
transmission malfunction between
adaptor PC board and indoor unit
Group control OFF All normal operation Even one unit stopped due to
malfunction or transmission
malfunction between adaptor PC
board and indoor unit
Zone control All OFF Even one unit operating
normally without malfunction
Even one unit stopped due to
malfunction or transmission
malfunction between adaptor PC
board and indoor unit
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