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P:\IR-Relay\Construction-Air-Cond\Docs-pics\AC-Ultra-aircon-ECU-
INTERFACE.doc
2. Programming your ECU and/or the Air Conditioner Interface
The Interface comes programmed to respond to the default codes for a Gewa PROG ECU as
shown below in the table.
a)
If you have a new Gewa ECU the relevant codes are built in and it will operate “straight
out of the box”
b)
If you have recorded other signals into these buttons on your PROG, you will need to
reset the buttons to the default (refer to the PROG user’s manual) OR re-program the
Interface to respond to other PROG codes (see next page)
c)
If you have another ECU you will need to read your manual to find out how to load the
relevant Gewa Link codes into it. Note that many ECUs such as the Possum Primo and
HouseMate (p.t.o) have Gewa Link codes built in
d)
If your ECU does not have built in Gewa codes, Technical Solutions can supply a
Universal Remote
that we have preloaded with codes as shown below
Operation
To use the air conditioner interface, place it in a location where the top of the remote is pointing
in the general direction of the air conditioner. Plug the power supply into a power point. At this
stage, the green Led will show. At this stage the air conditioner should respond to the Ultra Plus
buttons. If it is not possible to locate the unit so it is pointing directly at the air conditioner, try
reflecting the signals. (Think of the remote as being a torch flashing invisible Morse code
signals.) You can attach aluminium foil to the top of the remote to direct the infrared beam. If the
air conditioner does not respond, see ‘Setting the Code’ - previous page.
•
Once you have the air conditioner responding to the Ultra Plus buttons, try sending the
relevant PROG signals from your ECU
•
When the interface receives infrared PROG signals the red Led will blink.
•
The air conditioner interface activates the air conditioner one second after it receives the
signal from the PROG. This is to avoid the infra red signals from the PROG and air
conditioner remote getting mixed up.
•
Check all four functions – Power, Temp Up, Temp Down and Fan
PROG
Level
PROG
Key
Gewa
links
PRIMO
codes
Universal
Remote
(DVD Button)
Air Conditioner
Function
3
9
40
E7D51
Power
ON/OFF
3
*
42
E7D55
Chan +
TEMPERATURE UP
3
0
41
E7D53
Chan -
TEMPERATURE
DOWN
3
#
43
E7D57
Mute
FAN
