Service manual

12-26
CONTROL SYSTEM
SM CINCO 1-A.1 GB
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
12.7.9 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)
1234
For non connected indoor units, there is no need for label.
The result is presented in the following way:
Present for 2 sec Present for 2 Sec. Interpretation
x--: Cz
‘X’ is the wire name (1,2,3,4)
‘z’ is the communication channel (A,b,c,d)
‘x--:Cz’ is move wire ‘x’ to communication channel Cz
Ey-: W
‘y’ is the EEV channel name (A,b,c,d)
‘w’ can be:
‘c’ is closed1.
‘o’ is open2.
‘oc’ is either close or open.3.
x--: C_
‘x’ is the wire name (1,2,3,4)
‘C_’ is unknown communication channel.
‘x--:C_’ is the system does not know where to move wire
‘x’.
Possible reasons for ‘o’ and ‘c’:
Term Possible reasons
‘c’
Clogged EEV
EEV Coil problem
EEV driver problem
Clogged indoor unit or part of it.
Problem in ICT sensor
Extremely high load at the indoor side 
‘o’
Valve always open
EEV coil problem 
Driver Problem