Operation Manual

14
INSTALLATION TEST
For proper system operation, each communication cable has to be connected to the corresponding indoor
unit, following the refrigerant tubes. This means that the communication lines Ca. Cb, Cc, Cd and Ce has to
be connected to the indoor units A, B, C, D and E respectively.
To serve this purpose the system is designed to have “installation Test Mode”. When this mode is set, the
unit verifies whether the correct connections were made or not.
Notes:
1. The miswiring check cannot be performed while outdoor temperature is below 5qC. in this case the
display will show “OAT”.
2. The miswiring check cannot be performed if some components in the unit are out of operation. In
this case the display will show the error code “xxx”.
3. The indoor units are turned automatically to installation test mode, no need to turn them ON.
Please follow the steps below:
1. Make sure all wiring and piping to indoor units are
properly connected.
2. Turn ON the power breaker.
3. Enter the number of connected indoor units. (1, 2…5).
Installation Test (It)


Number of IDUs (nId)
 1

2

3

4
 5
4. Enter installation test (It)
a. Entering at first time
Is installation test
done before?
Electrical Power Up
Blink “it”
Enter or ESC
is pressed?
Present Normal HMI
Start Installation
test
No
ESC
Enter
Yes