CTC EcoAir 115-125 (v.3) - electronic defrosting
Exchange instruction, display card
!
The connection of cables must be performed by an authorized installation technician.
Make sure to disconnect the power supply to the unit (phases and ground connections) be-
fore starting to work.
1.
Start by transferring the cables from the old display card to the new card.
Start with connection G1 and then transfer all cables of terminal G.
When all cables have been transferred, there will be four spare connections at the top of the
terminal (G17-G20).
2.
In the same way, transfer the cables of terminal F from the old display card to the new card.
Start with connection F1 and then transfer the other cables. Connection F9 will then be empty.
3.
Disconnect the defrosting device by removing all cables (1-4) from the terminal X1 connections
19-21. Also disconnect the ground cable.
4.
Remove cable 25 from L1 (not from connection 7) on terminal X1 and attach it to the connection F9 of the
display card.
5.
Remove cable 106 from connection 21 on terminal X1 and attach it to an active ground connection (eg
connection 19 on terminal X1).
6.
Also remove cable 105 from connection 20 on terminal X1 and attach it to an active ground connection
(eg terminal 19 on terminal X1).
7.
Connect the defrosting sensors to the display card terminal G17-G18 (sensor 1) and
G19-G20 (sensor 2) and then in the evaporator. Use the clips that come with the delivery to
attach the sensors in the evaporator. Position the sensors, depthwise, in the middle of the
evaporator. Attach the sensors 250 mm from the right hand side (seen from the front) and
250 mm from the bottom edge and the upper edge respectively.
162 401 58-1 2017-11-28
Terminal G,
display card
Terminal F,
display card
Display card
Connection box
Terminal X1
