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1. When powered for the first time the control
will boot (Software version will appear) after a
sort time the display will change to show
"U9 - Yes"
2. This should be "U9 – No" by pressing the up
arrow, followed by the tick/confirm button.
See image 1 and 2.
1
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3. The next screen display "USE – 2 Pipe"
Change this to "4 Pipe" and confirm
parameters (Note: 4 Pipe setting is required to
allow fan only function). See images 3 and 4.
3
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4. Set the S1 and S2 parameters as shown:
S1 - noFN (No Function)
S2 - S2sens (External Temperature Sensor)
5
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7
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2
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4
4
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6
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8
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5. Select the thermostat mode, although this unit
is heating only by setting heating and cooling
allows the use of fan only/ventilation
if required. See images 9 and 10.
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9
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Press UP/DOWN to
select the operating
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mode to
.
Press
to confirm.
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11
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Press and hold for
2 seconds
Issue 001 - October 2023 | SmithsEP.co.uk | 17
10
You are now in
Standby Mode.
12
2 Sec
3
Success!
Installation completed.
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