86 CompTrol Interface V4.0.x | Issue 21-05-2021 | 1000932
Program 9 – direct frequency request with cascading
Input Function Description
X2c-D5
Fan speed F1
(low)
The signal switches the indoor unit to fan speed F1. The fan speed can
then no longer be changed using the wired remote control. If automatic
fan speed control is activated, digital input D5 is no longer evaluated
(see “5.3.1 Automatic fan speed control” on page 26).
X2c-D6
Fan speed F2
(medium)
The signal switches the indoor unit to fan speed F2. The fan speed can
then no longer be changed using the wired remote control. If automatic
fan speed control is activated, digital input D6 is no longer evaluated
(see “5.3.1 Automatic fan speed control” on page 26).
X2c-D5
and
X2c-D6
Fan speed F3
(high)
If fan speed F1 and fan speed F2 signals are both applied simultane-
ously, the indoor unit switches to fan speed F3. The fan speed can then
no longer be changed using the wired remote control. If automatic fan
speed control is activated, digital inputs D5 and D6 are no longer evalu-
ated (see “5.3.1 Automatic fan speed control” on page 26).
Table 66: Digital inputs in program 9
15.6 Digital output assignment in program 9
Output Function Description
X4a-I Alarm signal
All alarms registered by the indoor unit, plus internal expansion mod-
ule alarms, are indicated via the output. In addition, the error code
can be displayed on the 7-segment display (see “4.7 7-segment dis-
play” on page 21).
X4b-II
Compressor signal/
operating signal
Either a compressor signal or operating signal is displayed, depend-
ing on DIP switch S2-2 (see “5.3.7 Status signals” on page 29).
X4c-III
Defrost signal/heat-
ing signal
Either a defrost signal or heating signal is displayed, depending on
DIP switch S2-2 (see “5.3.7 Status signals” on page 29).
Table 67: Digital outputs in program 9
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