11-20
CONTROL SYSTEM
SM YAZDCI 1-A.1 GB
You can scroll the menu to observe:
6.
Observe the matrix result
a.
Guide for problem correction.
b.
For fixing problem, copy on paper the results displayed results,
7.
power off the unit, and then
fix the problem accordingly. Do not do any wire fixing under power!
Note:
You can exit the installation test any moment by pressing Esc for 5 seconds.
When exiting the test, the system will still keep the latest result from the previous test.
11.6.8
Faults during the test
Upon the following the system will terminate installation test:
Fault (display)
Reasons
‘OAT’ blink
Outdoor ambient temperature is too low, cannot run installation
test.
‘IDU’ blink
The selected number of the installed indoor units by the
technician does not match the number of indoor units detected
by the system.
Display indoor or outdoor
fault as in diagnostics
Check indoor and outdoor diagnostics.
ICT disconnected will be tested during the first 3 minutes of
installation test.
Note: When the system terminates the tests due to the problem above, the matrix results will
present partial test.
How to interpret the results (pf sub menu):
Test Result (pf)
Interpretation
NUL
The test has never been done before.
PAS
The test is pass
FAL
The test is fail
OAT
Outdoor air temperature is lower than 5 degrees. The
installation test cannot be done.
IDU
The selected number of the installed indoor units by the
technician does not match the number of indoor units detected
by the system.
FLT
IDU or ODU fault
11.6.7
Matrix Table Test Result (tbl) & Problem Correction (Crt)
The technician has to use labels on the indoor wires connected to the outdoor
On unit Label
C
A
C
B
C
C
C
D
x=Wire name
(Marked by technician)
1
2
3
4
For non connected indoor units, there is no need for label.
The result is presented in the following way:
